of the Royal Physical Society. 333 



latse; tarsi subtus fortiter ciliati, anteriores et intermedii 

 maribus dilatati, articulis quatuor primis triangularibus, primo 

 longiore, quarto bilobato in omnibus tarsis, posterioribus haud 

 dilatatis. Corpus satis elongatum. 



In general appearance the species composing this genus ap- 

 proach nearer to the American genus Geopinus than to any other 

 which I have seen, but are readily distinguished from it by the 

 possession of a median tooth to the mentum, besides the other 

 characters above mentioned ; their form also is less convex, and 

 approaches more nearly to Anisodactylus. The place of the 

 genus seems to be next to Dejean's and Schmidt-GoebePs Indian 

 genus Batoscelis, as denned by Lacordaire, from which it differs 

 in the following respects : — its mentum is deeply, instead of 

 being feebly emarginate; its ligula is small, instead of being 

 "assez grande;" its paraglossge are rounded instead of being 

 truncate, and can scarcely be called arched. In other respects 

 the characters seem almost the same. The bilobed fourth joint 

 of the tarsi is not noticed in Lacordaire' s description. Probably 

 it would have been better for me to have widened the characters 

 of the genus Batoscelis, so as to have admitted the following- 

 species, instead of making a new genus for them ; but the dif- 

 ference of their native country has induced me to separate them. 



1. D. Dohrnii, mihi. 



Fusco-virescens ; antennis, clypeo, mandibulis palpisque ferru- 

 gineis ; capite polito, foveis duabus inter oculos linea antica 

 transversa junctis; thorace leviter marginato, lateribus de- 

 pressis, angulis posticis foveolatis, disco leviter, lateribus for- 

 tius punctato ; scutello impresso ; elytris levissime punctatis, 

 striatis, striis impunctatis, interstitiis leviter convexis ; subtus 

 fuscus, lateribus (episternis et epimeris) leviter et irregulariter 

 punctatis, medio et abdomine impunctatis ; pedibus pallidis. 



Long. 5 lin., lat. 2J lin. 



Above fuscous with a virescent tinge. Head polished and 

 sparingly punctate behind the eyes, the rest impunctate, or 

 nearly so ; a deep angular fovea on each side near the inner cor- 

 ner of the eyes, united by a deep impunctate transverse line, in 

 front of which the epistome is marked by a broad, transverse, 

 somewhat rugose depression ; antenna?, clypeus, palpi, and parts 

 of the mouth more or less ferruginous ; clypeus with a row of 

 depressions in front, from each of which springs a hair. Thorax 

 rather convex, with a broad well-defined depression along the 

 margins and angles, broadest at the posterior angles, and bordered 

 all round with a slight raised edging ; slightly punctate on the 

 disk, more deeply so on the depressed margins ; the dorsal line is 

 feebly punctate-striate, and reaches only to the anterior semi- 



