170 GEO. H. HORN, M. D. 



moderate, posterior thiglis oval, tibiae slightly incurved, slightly 

 thickened, the posterior edge depressed and margined, the edges 

 slightly sinuate toward the apex, without trace of tooth, but forming 

 at apex a double shortened spine. Tarsi with first joint subdilated, 

 second short, third large, orbicular, fourth elongate, swollen, globular, 

 with appendiculate claws. 



P. Waterhousei Clark.— Oblong, subdepressed, glabrous, sbiniug. Tho- 

 rax yellow, impimctate. Elytra obloug, parallel, finely punctato-striate, the 

 strise nearly obsolete toward apex, color black, shining. Body beneath and an- 

 tennae black. Legs pale. Length .25 inch. ; 7 mm. nearly. 



This insect was described by Clark from a specimen obtained from 

 Mr. George R. Waterhouse, said to be from South Carolina. The 

 specimen in the British Museum carries the label " Carolina." 



No specimen has ever been seen in any American collection, and 

 there is consequently a suspicion that the locality given may be erro- 

 neous. The above description will enable it to be recognized when 

 seen. 



PACHYOlVYCHrS Chev. 



Head broadly oval, not deeply inserted ; eyes free, clypeus trun- 

 cate, front short, very obtusely carinate, the tubercles large, flat, ob- 

 lique ; labrura transverse, entire. Eyes oval, moderately prominent, 

 finely granulated. Maxillary palpi short, very robust, second joint 

 conical, third very short, obconical, fourth as broad at base as the 

 third, closely articulated with it and longer, obtusely oval at tip ; 

 these two joints apparently form a flattened ovate club to the second 

 joint Antennie a little longer than half the body, not thickened 

 externally, first joint clavate, second and third short, nearly equal 

 in length, together longer than the first, but shorter than the fourth, 

 the latter a little longer than the first ; joints 4-10 equal, shorter 

 than the fourth, eleventh longer, constricted at tip. Thorax broader 

 than long, apex truncate, base truncate at middle, obliquely sinuate 

 each side, disc convex, with a deep ante-basal transverse impression. 

 Elytra oblong, emarginate at base, disc punctato-striate. Prosternum 

 moderately separating the coxai, dilated behind them and with the 

 epimera closing the coxal cavities. Mesosternum moderate in length. 

 Ventral segments free, the first and fifth longer, the intermediate 

 equal. Legs moderate in length. Tibire slightly broader toward 

 apex, the posterior broadly sulcate, carinate each side and terminated 

 by a single spur; tarsi moderately long, the first two joints triangu- 



