File:Bulletin - United States National Museum (1909) (14761590781).jpg

Identifier: bulletinunitedst631909unit (find matches)
Title: Bulletin - United States National Museum
Year: 1877 (1870s)
Authors: United States National Museum Smithsonian Institution United States. Dept. of the Interior
Subjects: Science
Publisher: Washington : Smithsonian Institution Press, (etc.) for sale by the Supt. of Docs., U.S. Govt Print. Off.
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries

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rinedevelopment as set foith for the Carhonarla and Quailricollis sec-tions. In the QiiadrieoUis section the calcarine modification is moststrongly perpetuated, the specific dillerentiation resulting in the mod-ification of surface sculpturing, cuneaticollis being intermediate be-tween (jiKidricolIis and lun/icra/is, but retaining greater affinity with REVISION OF ELEODITNI BLAISDELL. 39 the former; antennal modification resulted in racial divergence inquadricoUis^ while greater calcarine development characterized theliunieralts ramus. In the Carhonarta section crural development seems to have takenplace, not atlecting the main cafhonana stem where surface sculptur-ing has undergone modification along two lines, the smooth and theasperate as indicated in the synopsis of the species. Group I appears to be very plastic and reactive to modifyingforces; (Iroup II less so. In Group I there is evidence of greaterspecific and racial differentiations. Porcafa Carionaria CuneaticolUsHumeral is
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Pedinoides Neomexicaiia Wcostata Subgeneric IVuTik; Pif!. 1.—Genealogical diagram of the subgexis melanelodes. The species of the present subgenus may be divided into two groupsas follows: Elytra elongate oval, convex, comparatively narrow, feebly emarginate at base,humeral angles not rectangular; thorax not conspicuously broadened at base,angles obtuse, not overlapping humeral angles of elytra, more or less arcuatelydeclivous at the sides, marginal bead rarely entirely visible when viewedvertically from above Group I. Elytra broad, flattened, truncate at base, humeral angles rectangular; thoraxconspicuously broadened at l)ase, angles rectangular, overlapping the humeralangles of the elytra ; pronotum but slightly arcuately declivous at the sides,marginal bead distinctly visible from above Group II. Group I may again be conveniently divided into two sections: Anterior spur of anterior tibire more or less gradually narrowed from base toapex in both sexes Carbonaria Section. Anterior

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