398 CALIFORNIA ACADEMY OF SCIENCES. 



interspaces between the punctures finely punctulate. 

 Pygidium coarsely closely punctate. Body beneath 

 coarsely punctate, sparsely on the abdomen with a short 

 yellow hair from each puncture. Length, .56-. 60 inch; 

 14—15 mm. 



The largest species of the genus known and of more 

 robust facies than in'stis and the allied forms, with which 

 it should be associated. It differs from all of that group 

 by the presence of the minute punctures of the elytra. 



San Jose del Cabo, Coral de Piedra, Sierra El Taste. 



LiSTROCHELUS CARMINATOR n. Sp. 



Oblong, nearly parallel, rufo-castaneous, head and 

 thorax darker and more shining, elytra dull faintly prui- 

 nose. Antennse rufescent, club paler. Head coarsely 

 closely punctured, clypeus hemi-hexagonal, feebly emar- 

 ginate with rounded angles. Thorax less than twice as 

 wide as long, slightly narrower in front, sides feebly ar- 

 cuate margin crenulate and fimbriate, disc convex coarsely 

 moderately closely punctate, more sparsely along the 

 sides and base. Elytra more finely, less deeply punc- 

 tured than the thorax, the costal very indistinct. Body 

 beneath punctate, with long yellow hair. Abdomen very 

 sparsely finely punctate, shining at middle, opaque at the 

 sides. Length, .60 inch; 15 mm. 



Jllalc. — Antennal club as long as the funiculus. Claws 

 similar on all the feet, pectinate from a single edge with- 

 out tooth. Pygidium convex sparsely punctate. Sixth 

 ventral large with a broad shallow concavity extending 

 from apex to base. 



From the structure of the claws this species is allied to 

 puhcriiliis. It differs in that the latter has a very coarsely 

 closely punctate thorax, and the male has quite a short 

 sixth ventral segment. 



San Jose del Cabo. 



