BY THOMAS G. SLOANE. 707 



elytra, (11) the lateral ocellate setigerous punctures of the elytra, 

 (12) the ambulatorial setae of the ventral segments, (13) the setae 

 at apex of the last ventral segment. The only other setae, as far 

 as I know, which had previously been recognised as of classifi- 

 catory importance, but which are not noted above, are the setae 

 of the prosternal and mesosternal declivities. 



Among the Carenides the number, position, or absence of the 

 following setae is of considerable classificatory importance : — 

 (1) The setae of the penultimate joint of the labial palps; (2) a 

 seta at basal angles of prothorax (some species of Scaraphites 

 only) ; (3) the ocellate punctures at base of elytra (present 

 throughout the Carenides except in the genus Scaraj^hites); 

 (4) the subapical seta of the lower edge of the posterior side of 

 the anterior femora (present in the typical Carenums, but absent 

 in Neocarenum, Neoscaphus, and Careiiidiiim) — this last character 

 loses its value to a great extent in the genera i^caraphites and 

 Earyscaphas) (5) the seta near the anterior margin of the 

 posterior coxie (the presence or alDsence of this seta has some 

 value in the Carenides). I give below some remarks on the 

 setigerous punctures of the posterior face of the anterior femora 

 and of the posterior coxae; these characters seem to have received 

 attention first from me;* they evidently have an importance that 

 cannot be overlooked. 



I would draw attention to the fact that most of these sense- 

 setae are subject to duplication, when a normally single seta 

 is replaced by two (each in a separate pit) placed close together. 

 It should be noted here that in Caremvm subcyaneuvi, MacL, 

 all my specimens have (on each side) the anterior femora 

 with two closely placed subapical setigerous punctures on the 

 lower margin of the posterior face, being the only case known to 

 me where such duplicate setae are evidently the normal form. 



* These Proceedings, iii. (2), 1SS8, p. 1102. 

 Chaudoir in his description of Monocentrum grandiceps (Ann. Soc. Ent. 

 Belg. 1869, p. 147) says, *' aux cuisses anterieures on remarque quelques 

 points piliferes," but he seems to have attached no importance to these 

 punctures. 



