Proceedings of the Academy of Natural Sciences of Philadelphia, Volumen1Academy of Natural Sciences of Philadelphia, 1843 "Publications of the Academy of Natural Sciences of Philadelphia": v. 53, 1901, p. 788-794. |
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Página 11
... sides of a lump of half burnt coal . The absolute direction of the cleat is very various . At the Laurel Hill mines , in Hazle creek valley , it is believed to be about north 80 ° east . In some beds of coal which I discovered and ...
... sides of a lump of half burnt coal . The absolute direction of the cleat is very various . At the Laurel Hill mines , in Hazle creek valley , it is believed to be about north 80 ° east . In some beds of coal which I discovered and ...
Página 19
... prasinus , but differs in being proportionally longer , more convex , in having a brown epidermis , narrower anterior side , and oblique posterior margin . 3. U. paralellus . - Oblong , sub - rhomboidal May , 1841. ) 19.
... prasinus , but differs in being proportionally longer , more convex , in having a brown epidermis , narrower anterior side , and oblique posterior margin . 3. U. paralellus . - Oblong , sub - rhomboidal May , 1841. ) 19.
Página 28
... , which do not diminish in size on the posterior margin . CYTHEREA . Cytherea subnasuta . - Trigonal , thin , ventricose ; anterior side narrowed , slightly produced and subangulated at the extremity ; surface 28 . [ JUNE , 1841 .
... , which do not diminish in size on the posterior margin . CYTHEREA . Cytherea subnasuta . - Trigonal , thin , ventricose ; anterior side narrowed , slightly produced and subangulated at the extremity ; surface 28 . [ JUNE , 1841 .
Página 29
... side cuneiform , extremity acutely rounded ; umbo flattened , sulcated . Length 1 1-4 inch . Var . A. Proportionaliy shorter , more convex , with numerous concentric furrows . Allied to A. perplana , but has a much deeper lunule , more ...
... side cuneiform , extremity acutely rounded ; umbo flattened , sulcated . Length 1 1-4 inch . Var . A. Proportionaliy shorter , more convex , with numerous concentric furrows . Allied to A. perplana , but has a much deeper lunule , more ...
Página 30
... side pro- duced , cuneiform ; rounded at the extremity ; hinge linear in the middle , teeth obsolete , except towards the extremities ; within slightly sulcated ; crenulations of the margin sulcated in the middle . Length 2 inches ...
... side pro- duced , cuneiform ; rounded at the extremity ; hinge linear in the middle , teeth obsolete , except towards the extremities ; within slightly sulcated ; crenulations of the margin sulcated in the middle . Length 2 inches ...
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ACADEMY OF NATURAL antennæ anthracite Arvicola Ashmead Author basal beaks beneath bituminous coal body body whorl bones brown Cassin Cecidomyia Chair coal collection colour Committee Conrad convex Corresponding Secretary costæ cretaceous dated DONATIONS TO LIBRARY DONATIONS TO MUSEUM ears Edward Hallowell election Elwyn elytra feet fossil genus geological Gliddon Goddard hairs head impressed inch insect John Cassin Journal labrum larvæ Length letter was read limestone Locality male margin MEETING FOR BUSINESS Messrs Miocene Natural History NATURAL SCIENCES nearly oblique observed obtuse palpi paper Pennsylvania Phillips posterior Presented by Dr Proceedings Prof Professor Johnson prominent pronotum punctures referred remarks Report ribs river rounded S. G. Morton S. S. Haldeman Samuel George Morton shells side slightly species specimens striæ striate Strophomena surface suture tail teeth testaceous tion Trenton limestone Unio upper valve Vaux ventricose VICE PRESIDENT MORTON whorls William WRITTEN COMMUNICATIONS