NATURAL SCIENCES OF PHILADELPHIA. 385 



sculptured as the head, slightly channeled, and marked with a strong trans- 

 verse impression just before the middle; apical and basal margins bisinuate- 

 sides slightly rounded in front andsubsinuate behind. Elytra rough with ele- 

 vated points, sides serrate, more distinctly toward the tips, which are sepa 

 rately lounded ; broadly impressed each side at the base, and ornamente I 

 with a large pale spot, which extends nearly one-third the length, ani lades 

 insensibly into the black ground color. 



Body beneath black, somewhat shiuing, under surface of prothorax reticu- 

 late, of trunk granulate like the upper surface. Feet piceous, hind tarsi with 

 the first joint as long as the others united, third and fourth joint with short 

 membranous lobes ; ungues simple. 



The antenna? are inserted under small oblique ridges, the front is not dilated. 

 The mentum is broad, transverse, and apparently rounded in front. The pro- 

 sternum behind the coxa? is narrow, not angulated on the sides, acute at tip ; 

 the mesosternum is completely divided, and is not connate with the metaster- 

 uum ; the side pieces of the latter are moderately broad, the epiraera not cov- 

 ered by the abdomen, and the sternum itself is marked each side with a large 

 hairy depression. The hind coxa? are broad, scarcely narrowed externally, 

 and extend not quite to the side of the abdomen. The last ventral segment 

 is emarginate. 



I consider this genus as representing a new group of the tribe Buprestini 

 (Lee. Class. Col. 151), between Buprestes and Anthaxia?. 



DYSTAXIA Lee. (n. g. Buprestida?). 



D. Murray i, elongato-ovalis, convexa, ltete viridi-senea, capite thorace- 

 que confertim punctatis, hoc trapezoideo a basi antrorsum angustato, longi- 

 tudine plus duplo latiore, lateribus obliquis recti's, basi bisinuato, angulis 

 posticis acutis; elytris thorace paulo latioribus, confertissime punctatis etsubti- 

 liter cinereo pubescentibus ; subtus confertim punctata, pube alba dense ves- 

 tita, antennis pedibusque la?te rufo testaceis. Long. 14 mm. 



One female from California, presented to me by Andrew Murray, Esq. This 

 new genus is founded upon an insect of rather stout form, having the elytra a 

 little wider than the thorax, parallel and finely margined on the sides, round- 

 ed and not serrate at tip ; having the claws armed with a large but not very 

 acute tooth, and the membranous appendage of the fourth tarsal joint deeply 

 divided into two narrow lobes, as in Schizopus. 



The head is short and convex, the antenna? inserted under very slight fron- 

 tal ridges, and are feebly serrate in the female; the joints 14 are smooth 

 and shining, the following ones slightly porous, and feebly pubescent on the 

 sides. The eyes are transverse, elliptical, moderate in size, and finely granu- 

 lated. The labrum is small and deeply emarginate ; the mandibles are short 

 and very stout ; palpi broken. The thorax is trapezoidal, sides straight, with 

 the lateral margin well marked behind the middle ; base broadly Insinuate, 

 hind angles acute ; scutellum transverse, acute at tip. Elytra destitute of 

 striae, each broadly rounded at the base, fitting closely the basal outline of the 

 thorax ; wider than the thorax, parallel and finely margined at the sides, ob- 

 tusely rounded at tip. Prosternum short, slightly produced over the meso- 

 sternum, obtusely rounded at tip; meS"sternum short, side pieces large, ex- 

 tending to the coxa? ; metasternum short, posterior outline sinuate, with an 

 oblique engraved line near the inner half; episterna wide, epimera very small. 

 Anterior and middle coxa? small; trochantin indistinct or wanting ; hind coxa? 

 extending nearly to the side of the abdomen, slightly wider inwards. Legs 

 slender, femora unarmed, tibia? with small spurs ; tarsi shorter than the tibia?, 

 joints 1 4 with membranous lobes beneath, second lobe slightly emarginate, 

 third lobe deeply emarginate, fourth lobe bilobed and much longer, claw joint 

 moderately long, claws armed with a tooth near the tip. Abdomen with fivo 

 ventral segments, the first and second connate, the fifth rounded at tip. 



18rj6.] 25 



