COLEOPTERA. 
319 
inornataj Brend. 1. c. p. 258, South Carolina. Brendel also describes (1. c. 
p. 250), under the name of conjuncta^ what he believes to be the northern 
form of B. clavata. 
Batrisus juvencm^ Brendel, Proc. Ent. Soc. Phil. v. p. 258, Illinois. 
Tychus hytJiinioidcs, 1. c. p. 269, New York. 
Trimium impunctatum^ Brendel, 1. c. p. 289, habitat not stated. 
Euplectus d'initusj Brendel, 1. c. p. 200, Northern States. 
Claviger saulcyi, Brisout, Ann. Soc. Ent. Fr. 4® ser. vi. p. 303, Escurial. 
Adranes leconteiy Brendel, 1. c. p. 255, Illinois and Chicago. 
Paussidas. 
Fauimaire and Coqubrel (Ann. Soc. Ent. Fr. 4® s^r. tome vi. p. 19) re- 
mark on the geographical range oiPaussus olcesci (Fairni.) = /c/M/yn (Westw.). 
EctrepheSj g. n., Pascoe, Proc. Ent. Soc. 1800, p. xvi. Head inserted, 
forehead deeply excavated ; mandibles rostriform; antennae 3-jointed, joint 
2 minute ; 3 elongate, compressed, obliquely truncate ; elytra covering the 
whole abdomen. Sp. E. foi'micarum, sp. n.. Past. 1. c. from Western Aus- 
tralia, in ants’ nests. Pascoe is doubtful of the position of this insect ; and 
Westwood (/. c. p. xxii) says that it does not belong to the Bnussidcr., and 
differs in the structure of the mouth from anything with which ho is ac- 
quainted. It has enormous mandibles, with a moveable triangular or conical 
lobe. 
Articerus odeioahniiy sp. n., Pascoe, Proc. Ent. Soc. 186G, p. xv, from South 
Australia 5 A. hostockiiy sp. n., Pasc. ibid., from Western Australia. 
SCYDMiENIDiE. 
Chcwokitia amamciy sp. u., Leconte, Proc. Acad. Nat, Sci. Phil. 18G6, p. 370, 
Washington and New York. 
SlLPHIDiE. 
Leptinus. Leconte (Proc. Acad. Nat. Sci. Phil. 1866, p. 368) 
remarks upon the characters of this genus, which he regards as 
differing from the Silphidse by, 1st, the form of the head and 
the insertion of tlie antennaj j 2nd, the form of the mentum ; 
3rd, the form and arrangement of the anterior coxae; 4tli, the 
structure of the fourth joint of the tarsi.^^ With the Ilydro- 
philidae it agrees " in the form of head, insertion of antennae, 
general arrangement of mentum, gula, and prosternum, but 
differs by the regular antennae, not prominent anterior coxae, 
and structure of the fourth joint of the tarsi.’"’ He infers that 
Leptinus is a highly specialized type, representing a distinct 
family, having less affinity with Silphidae than with Hydro- 
philidae.” 
The following North American species of this family are noticed by 
Leconte (Proc. Acad. Nat. Sci. Phil. 1866, p. 377) : — Neei'ophorus hecate 
(Bland) ; N. confosso?' (Lee.) = var. N. marithnus (Mann.) ; N. pygmeaus 
(Kirby) ; N. defodiens (Mann.) ; and Sil})ha opaca (Linn.). 
Michow (Berl. ent. Zeits. 1866, pp. 411-412) remarks upon the occurrence 
of forms intermediate between Necrophorm ruspator (Erichs.) and microce- 
