AMERICAN COLEOPTERA. 253 



which have four joints in both sexes." The former which undoubtedly 

 contain the typical species of Schioedte, represent Balhi/scia, {Quaestus 

 and Quxsticulua Schauf.), while the latter species he proposes to call 

 by a new name Aphaobiux* (Adelops | Schauf). In this paper 

 M. Abeille gives a table of the genera known to him, of which the 

 following is a copy. 



A. — Elytra with lateral margin convex without reflexed border visible from above. 

 B. — Scutellum barely visible, in/act short and extending across the entire base 

 of the thorax. 



C. — Elytra glabrous Leptodirus. 



C C. — Elytra pubescent S. O. Propus. 



B B. — Scutellum normal. 



C. — Elytra of the length of the body. Thorax subcylindrical and con- 

 stricted Antrocharis. 



C C. — Elytra longer than the body. Thorax subdepressed and slightly nar- 

 rowed in front of base 8. G. Diapryaius. 



A A. — Elytra more or less acutely margined and the edge visible from above. 



B. — Anterior tarsi % four-jointed Oryotus. 



B B. — Anterior tarsi % five-jointed. 



C. — Elytral margin narrow. Penultimate joints of the antennae sud- 

 denly thickened at tip , Pholeuon. 



C C. — Elytral margin wide. Penultimate joints of the antennae thickened 

 from base to tip Drimeotus. 



Two other genera are mentioned in the paper founded on females 

 alone, and which consequently cannot be placed with certainty in the 

 above table. The first is Ci/todromus'\ Abeille, which seems to have 

 no characters given by which it differs greatly from Drimeotus. The 

 second is Spelaeoihlamys% Dieck, for which I find no valid generic 

 characters given. Having never seen either of these genera it would 

 be presumption to hazard an opinion concerning them, and I can only 

 quote from Abeille, ^^ on pent dire avec M. Bedel, que les genres qui 

 ont ete proposes Jusqu'ici ont ite fort mal caracterises ; aucune vue 

 d' ensemble n'a presidi a leur itahlissement." 



In confirmation of the above quotation it may be stated that all 

 European authors describe (^Adelops), Bathyscia as having the pos- 

 terior coxae contiguous. Through the kindness of M. Salle I have 

 studied the following European species : Freyeri, Schicedtei, Bon- 

 vouloiri, Aubei, montanus and in/emus., which seem to represent the 

 genus fairly, and all of them have the posterior coxae separated either 



♦Abeille de Perrin, loc. cit. (in separate pamf>hlet), p. 8. 

 f Cytodromus and Antrocharis Abeille de Perrin, loc. cit. p. 11. 

 ^/Spelaeochlamys Dieck, Heyden's Reise nach Siidl. Spanien, 1870, p. 93; 

 (Berl. Zeitschr. Beih.). 



