518 Goleopterological Notices, VII. 



unaccountably erroneous. But very few examples have ever been 

 taken. 



This species apparently occurs only in the low sea-board plains 

 of the Atlantic coast, and thus far exclusively in the neighborhood 

 of large cities ; the probability of its European origin may there- 

 fore be an open question for the present. The genus seems, how- 

 ever, to be represented in Mexico by a species different from any 

 known in Europe, and recently described by Mr. Croissandeau 

 (Ann. Soc. Ent. Fr., 1893, p. 231). 



Leptoscydmini. 

 This tribe, though very limited thus far in extent, is important 

 from a taxonomic standpoint, in the fact that it constitutes a bond 

 between the ordinary forms of the subfamily, through the Chev- 

 rolatiini, and the exceedingly isolated Eumicrini which follow.. 

 Its affinity with Chevrolatiini is proved by the truncate elytra, 

 exposed, flat and declivous pygidium, the latter being however 

 much more inclined than in that tribe, and by the conformation of 

 the metasternal side-pieces, these being narrow and concealed by 

 the elytra but becoming inwardly prominent behind and partially 

 enclosing the coxae. With the Eumicrini its relationship is in- 

 dicated by the nearly but not quite vertical pygidium, and slight- 

 ly arcuate subapical sutures of the abdomen, absence of basal 

 modifications of the elytra, convex form of body and general 

 facies. It difl['ers very radically from both the tribes mentioned 

 in the structure of the front, as explained in the table previously 

 given. 



LEPTOSCYDMIJS n. gen. 



The body in this genus is narrowly suboval and very convex, 

 with trunctate elytra and strongly declivous pygidium. Head 

 well developed, feebly inclined, the neck abruptly and deeply con- 

 stricted, the constriction perfectly simple and transverse, the eyes 

 small, anterior and on the sides. Antennae very approximate in in- 

 sertion, rather short, gradually and strongly incrassate toward tip 

 but with the last three joints forming a rather indistinctly differ- 

 entiated club. Clypeus flat, porrect, moderate in length, the lab- 

 rum small, short and transverse. Mandibles moderate in devel- 

 opment, dentate within as usual, the portion between the tooth 

 and the apex rather slender, feebly arcuate, very gradually and 



