Millet from the Malay Archipelago. (Plate 7, figs. F, f.)

GENUS Verrucina, Goës.

Test adherent, constructed of agglutinated sand, divided in the interior into a few more or less regular chambers, having an outlet in the sunken apex of the test. Recent.

EXAMPLE.-V. rudis, GoEs, Bull. Mus. Comp. Zool. Harvard,' vol. xxix. No. 1, part xx. 1896, p. 25, pl. i. figs. 15, 16.

The shape of the test is irregularly ovoid, adherent, with a rough surface. The sunken top carries the irregular apertures, communicating with the septate interior. Found by Goës in the Pacific, at a depth of 772 fathoms. Recent. (Plate 7, fig. G.)

DIVISION B.-SERIES WITH LABYRINTHIC CHAMBERS.

GENUS Haplostiche, REUSS.

Test free, uniserial, straight, or arcuate; never spiral. Chambers labyrinthic. Aperture terminal; porous or dendritic, rarely simple.

EXAMPLE.-H. Soldanii, Jones and Parker sp. (Lituola), 'Quart. Journ. Geol. Soc.' vol. xvi. 1860, p. 307, No. 184; Brady, ' Rep. " Chall." vol. ix. 1884, p. 318, pl. xxxii. figs. 12-18.

This series has an elongate, subcylindrical, or ovate test, with tapering or rounded ends. Segments convex, slightly embracing, subdivided by irregular

secondary septa. Sometimes measures as much as

10

inch (7.5 mm.)

This striking form is frequently found in dredgings from the West Indies and the Pacific, among other localities. It ranges in depth from about 40 to 435 fathoms. As a fossil it first occurs in the Miocene. Miocene to Recent. (Plate 7, figs. H, h.)

GENUS Lituola, LAMARCK.

Test free, partially or entirely spiral; nautiloid or crozier-shaped. Carboniferous to Recent.

EXAMPLE.-L. placentula, Chapman, Ann. Mag. Nat. Hist.' ser. 7, vol. iii. 1899, p. 54, figs. 2a, b.

Test complanate, irregularly suboval; composed of coarse arenaceous particles with much cement of a finer sandy nature. Interior labyrinthic. The general aspect of the test shows this form to have had a spiral, but the separate segments are obscure. Cretaceous (Cambridge Greensand). (Plate 7, fig. I.)

GENUS Bdelloidina, CARTER.

Test adherent; chambers linear, vermiform, approximated, intercommunicating by a row of pores seen on each septal face. Cretaceous, Recent.

EXAMPLE.-B. aggregata, Carter, Ann. Mag. Nat. Hist.' ser. 4, vol. xix. 1877, p. 201, pl. xiii. figs. 1-8.

This is apparently the only species of the above genus. The test is generally constructed of coarse calcareous sand, the exterior of the shell being rough, the internal surface smooth. With the exception of one fine example met with in the Chalk this form is

almost confined to recent deposits, usually in the neighbourhood of coral reefs. Its range in depth is from 25 to 63 fathoms. (Plate 7, fig. I.)

GENUS Haddonia, CHAPMAN.

Test calcareo-arenaceous; adherent and sinuous; the commencement sometimes straight, sometimes spiral. Chambers linear and narrower in the line of growth than laterally. Sutures roughly parallel, but sometimes quite irregular. Chambers imperfectly septate or coarsely labyrinthic. Shell-wall perforated by a series of coarse pores. Aperture a crescentic or horseshoe-shaped slit.

EXAMPLE.-H. torresiensis, Chapman, 'Journ. Linn. Soc. Lond., Zoology,' vol. xxvi. 1898, p. 454, pl. xxviii.

This species was originally found in abundance affixed to a mass of rough coral rock from Torres Strait. It has since occurred in considerable numbers from the reef of the Funafuti atoll. The colour of the shell-wall is from whitish to cream colour or pale brown; the breadth of the chambers about twice their height, here and there subdivided obliquely, somewhat in the manner of Textularia, but very irregularly, the general plan being a moniliform series of segments. Aperture usually crescent-shaped, sometimes gaping, but more often having a valvular flap, formed by a prolongation of the superior surface of the test, which nearly closes up the orifice, as in Valvulina and certain of the Miliolina. Recent. (Plate 7, fig. K.)

C. Haplophragmium Humboldti, Reuss (after Hantken).
D. H. nonioninoides, Reuss (after Chapman). × 30.
E. Placopsilina cenomana, D'Orbigny (after Brady).
F, f. Crithionina mammilla, Goës.
× 11.

G. Verrucina rudis, Goës. × 7.

× 30.

H, h. Haplostiche Soldanii, Jones and Parker (after Brady).

I. Lituola placentula, Chapman. × 14.

× 18.

× 10.

J. Bdelloidina aggregata, Carter (after M. Wright's drawing). ×5. K. Haddonia torresiensis, Chapman.

× 5.

L,l. Polyphragma cribrosum, Reuss (after Perner).

× 8..