78 CASEY 



sents a very distinct group in the genus because of the more 



oblong form of the body and different outline of the prothorax, 



as well as by reason of its opaque elytra, with pubiferous and 



barely muricate punctures. The species described by Dr. 



Horn under the name Eusathis ciliatiis belongs without much 



doubt to this genus and is defined above from published 



characters. 



Coniontides n. gen. 



So far as known, this group of the true Coniontes is confined 

 to the islands off the coast of southern California ; it is allied 

 closely to Coniontis but has a very different facies due to the 

 marked prolongation backward of the thoracic angles, recalling 

 the Eusatti, and in every way similar to the form there prevail- 

 ing. There are no other very radical differences that I have 

 observed, excepting the more elongate maxillary palpi and the 

 apically more strongly narrowed and more deeply and circularly 

 sinuate apex of the prothorax, which, with the prolonged basal 

 angles, gives the few species thus far discovered a decidedly 

 peculiar habitus. The four species known to me may be dis- 

 tinguished as follows : — 



Form broadly oblong-oval, moderately and evenly convex. Piceous- 

 black in color, rather more reddish beneath, the legs evidently 

 rufous, the antennse dark piceous, shining, the elytra alutaceous, 

 glabrous; head small, strongly though rather sparsely punctured, 

 prominent at the sides before the eyes; antennte long and very 

 slender; prothorax fully four-fifths wider than long, the sides 

 broadly rounded and parallel in basal third, gradually strongly 

 converging and straighter thence to the right and narrowly 

 rounded apical angles, the basal angles slightly blunt at tip; base 

 deeply sinuate laterally ; surface convex, evenly so to the fine mar- 

 ginal bead, rather coarsely, deeply, moderately closely and evenly 

 punctured throughout from side to side; scutellum somewhat 

 punctate, shining; elytra a fourth longer than wide, equal in 

 width to the prothorax, the sides parallel and straight, arcuately 

 converging behind the middle to the broadly ogival apex, evenly 

 convex, with narrowly reflexed margins, the surface rather 

 strongly, moderately closely punctate discally, though less 

 coarsely so than the pronotum, the punctures becoming smaller 

 and more shallow though similarly separated laterally; under sur- 

 face with short, sparse and decumbent hairs, the prosternal 

 process broadly and obtusely rounded at tip, not margined and 

 rather finely though strongly, sparsely punctate. Length 11.3 

 mm.; width 5.9 mm. Island of San Clemente latus Lee. 



