CERAMBYCID^E 311 



Callimus opacipennis n. sp. Rather slender, much depressed, black, 

 the prothorax above and beneath red, the elytra black, with a very faint 

 greenish or violaceous tinge; abdomen, legs and antennae through- 

 out black; head with dense longitudinally anastomosing sculpture; 

 antennae (d 71 ) not quite as long as the body, slender, slightly thickened 

 distally, joints three to five increasing in length, the third scarcely more 

 than twice as long as the second, similar in the female but a little shorter; 

 prothorax as long as wide, narrower in the male, obtusely tuberculate 

 near the middle of the sides, the apex feebly arcuate and as wide as the 

 base; surface trituberculate, the median tubercle being more basal, not 

 definitely punctate, the base transversely black but not impressed; elytra 

 three and one-half times as long as the prothorax and distinctly wider, 

 rectilinearly parallel at the sides, very obtusely rounded at apex, not 

 dehiscent, the sutural angles dentiform ; surface flat, opaque, the moderate 

 punctures close-set, very deep and perforate, fine apically, the inter- 

 spaces strongly and coarsely grano-reticulate; legs slender, the femora 

 abruptly clavate, the posterior gradually enlarged, not so clavate, the erect 

 hairs long and black. Length (cf, 9 ) 4.5-6.2 mm.; width 0.8-1.4 mm. 

 California (San Diego), Ricksecker. 



Differs from the preceding in its black opaque elytra and shorter 

 prothorax. The sexual differences affecting the abdomen are 

 extraordinary. In the male the abdomem is even in surface 

 throughout and cylindrically convex, with simple transverse sutures, 

 the first segment longer than the next two combined, the second 

 longer than the third, the fifth very much shorter than the fourth 

 and deeply sinuate. In the female the first segment is as long 

 as the next three combined, the second strongly sinuate through- 

 out at apex, with a very large transversely crescentic apical area 

 densely clothed with fulvous tomentum, the third very short, 

 strongly bowed to fit the preceding, the fourth rather long, un- 

 modified, the fifth normal, transverse and broadly truncate. The 

 male is very much smaller than the female, having the smaller of 

 the above dimensions. I am unable to state whether these remark- 

 able sexual differences are general among the California representa- 

 tives of Callimus, apparently not having the female of the other 

 species, but if so Pilema will probably have to be restored. 



Callimus variipes n. sp. Shining throughout and bristling with long 

 erect flying hairs; head, pronotum and entire under surface as far as the 

 abdomen deep black, the latter red throughout; legs very pale flavo- 

 testaceous, the apex of the femora and tibial apex, also the apices of the 

 tarsal joints, black; head narrower than the prothorax, with small and 

 rather sparse punctures, becoming closely rugose at the sides of the neck; 

 antennae (cf) nearly as long as the body, often perceptibly shorter, 



