182 GEO. H. HORN, M. D. 



rior tarsi of male moderately dilated, biseriately squamulose beneath, the 

 fourth joint feebly emarginate. Middle tarsi feebly dilated but distinctly 

 squamulose. The first joint of posterior tarsi is distinctly shorter than 

 the next two' together. The females have slender tarsi. 



Here also may be observed the depression in the last joint of the 

 labial palpi of the male. I was at first inclined to believe that this 

 might be a post-mortem character the result of contraction, but its 

 occurrence in males only seems to indicate that it is probably a character 

 found also in life, of a sexual import. 



In this genus are contained those species in section C, (loc. cit. p. 377), 

 hydropicus, carus, lonfjulus, JiitvUimhus and rectangulus. Acupalpus 

 seems fully as worthy of being maintained as many of the genera of the 

 present tribe, if we reject its characters as invalid for generic separation 

 it will be almost impossible to separate genera in the group Harpali. 



Bradycellus. — 'As far as the species in our fauna are concerned this 

 genus is a composite and contains three distinct forms. 



First. — Labial palpi normal, the second joint longer than the terminal 

 and plurisetose in front. The anterior and middle tarsi are dilated nearly 

 equally and biseriately squamulose beneath, the fourth joint emarginate. 

 The antennae have the two basal joints glabrous and also a small portion 

 of the base of the third. 



I believe the species so constituted should be placed in Hurpalus, 

 (Lee. Proc. Acad. 18G1, p. 374). They are dichrous, vulpecnlus and 

 autumnalis. 



Second. — Labial palpi abnormal, the second joint bisetose in front not 

 longer than the last. Anterior tarsi of male normally dilated and 

 squamulose beneath, the fourth joint emarginate. Middle tarsi narrowly 

 dilated but distinctly squamulose. The antennae have three basal joints 

 entirely glabrous. 



Here belong hadlipennls^ atrim,edrus, nigrinus, and one new species 

 all of which should be referred to the genus Tachycelli:s Morav. 



Baron Chaudoir (Rev. Mag. Zool. 18(j8), first suggested the placing 

 of these species in Tuchycellns but the characters made use of were 

 of such a trivial nature that Dr. LeConte did not deem it advisable 

 to follow him. I can not myself agree with Chaudoir in adding also 

 vulpecidus, dichrons and autummilis. 



In the same paper Chaudoir makes the first step toward the re- 

 establishment of Acupalpus in our fauna by the description of a new 

 species {re.ctangidus), included in the list above given. 



Third. — The remaining species belong to Bradt/ccUas proper. The 



