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SPHENOPHORUS. 



157 





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ther coarse, deep, oval punctures, the third tarsal joint less dilated. 8. mund 

 uld, perhaps, be almost equally well placed in Bhodobwnus. 



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3. Sphenophorus octocostatus, sp. n. (Tab. VII. figg. 33, 33 a, $ 



Oblong-oval, black, the coarse punctures on the prothorax and pygidium, and the depressed spaces between 

 the elvtral costee, with a reddish-brown incrustation, the rest of the surface more or less shining, the 

 punctures on the under surface and legs each bearing a minute hair-like scale. Rostrum a little shorter 

 than the prothorax, curved, moderately stout, cylindrical, closely punctate, the widened basal portion 



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faintly sulcate up to the frontal fovea, the peduncle of the submentum with a small, compressed, rounded 

 prominence in the 2 ■ Prothorax about as long as broad, gradually and arcuately narrowing from near 





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the base, feebly constricted in front, bisinuate at the base ; very coarsely, irregularly punctate, except 

 along the rather broad, smooth median ridge, the punctures here and there confluent, or separated by 

 smooth flattened spaces. Scutellum triangular, smooth. Elytra moderately long, subtriangular, much 

 wider than the prothorax ; each with the four broad costae and the sutural interstice bare, the finely 

 punctured narrow strife almost hidden by the dense incrustation, the flattened interstices rather coarsely 

 uniseriate-puuctate, the others with an irregular double row of fine punctures. Pygidium coarsely 



. Beneath very coarsely punctate; ventral excavation of the tf long, broad, and shallow. 

 Femora fringed with long, the tibia? with short, hairs, the tibiae nearly straight on their outer edge and 

 feebly sinuate and almost unarmed within. Third tarsal joint very large, spongy-pubescent beneath. 











Length 121-13, breadth 5-54 millim. ( d $ 



Hab. Mexico, Omilteme and Xucumanatlan in Guerrero, 7000-8000 feet (//. H, 





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Two males and one female. This species may be readily recognized by the single 



h median ridge on the prothorax, which for the rest is very coarsely, 



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smoo 



confluently punctured, and the to 



The 



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ery similar to those of 8. costipennis, Horn *, and S. striatipennis, Chittend., and 

 third tarsal joint is as broad as in 8. aterrimus. 



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4. Sphenophorus ochreus, (Tab. VIII. figg. 1, 1 a, b, 6 .) 



Sphenophorus ochreus, Lee. Proc. Acad. Phil. 1858, p. 80 * ; Chevr. Ann. Soc. Ent. Fr. 1885, 





p. 107 2 



( 



Sphenophorus pictus, Lee. loc. cit. p. 80 4 ; Horn, Proc. Am. Phil. Soc. xiii. p. 417'. 



Hab. North America, Utah*, Vallecito in California * °.— Mexico », Soi 



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This is one of those species of Sphenophorus (Group III. of H 

 glabrous, subopaque or shining natural, surface-incrustation, and a ] 

 tarsal ioint. I have recently seen Gyllenhal's type of 8. a>qualis, and H 



of S. och 



must have been taken from specimens of that insect. 8. cequalis is 

 apparently confined to the Atlantic States and S. Dakota ; it may be separated from 

 8 ochreus (examples of both of which 1 have examined) by the coarser, round 





punctures of the elytral strife (fig. lb) 



of 



male &c. We figure a specimen of the true S. ochreus kindly sent by Prof. Chittenden. 



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* There is a specimen of this species in the Salle collection labelled as from « Costa Rica," but the locality 





requires confhmation. 











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