COLEOPTERA OF BAJA CALIFORNIA. 427 



coarse punctures or granules, the pleura? sparsely granu- 

 late. Meso- and metapleuree granulate. Legs sparsely 

 punctulate, the tibia? rougher at apical half. Length, .65 

 inch; 16.5 mm. 



Male. — Anterior tibite serrate within, the inner apical 

 angle prolonged, anterior femora ver}- abruptly nan-owed 

 at base. Posterior femora with a moderately long, slen- 

 der tooth one-third from apex. 



Female. — Anterior tibia? not serrate within the inner 

 apical angle prolonged, the femur not abruptly narrowed 

 at base; posterior femora simple. 



In the male the first three ventral segments are slightly 

 concave and smooth, the sides of the segments granulate- 

 punctate. The female has the first three segments coarsely 

 punctate from side to side, at middle slightly flattened. 



In both sexes the last two ventrals are finely punctate. 



The elytral sculpture of this species is of the same 

 type as seen in concolor and shows a tendency to vary as 

 in Argoporis inconstans. 



Two specimens. San Jose del Cabo. 



DoLioPiNES nov. gen. 



Form oblong, parallel, depressed, body alate. Head 

 dissimilar in the sexes, transverse male, oval female, the 

 clypeal margin truncate male, arcuate female. Eyes 

 transversely oval, coarsely granulate, deeply emarginate 

 by the sides of the clypeus. Labrum transverse, feebl}^ 

 trilobed in front. Mandibles slightly visible beyond 

 the labrum, apex bidentate. Mentum hexagonal with 

 rounded angles, emarginate in front, partly membranous 

 anteriorly. Ligula membranous, lanceolate. Labial palpi 

 moderate in length last joint cylindrical as long as the 

 two preceding joints, membranous at tip. Maxillary palpi 

 longer, the second and fourth joints equal, third shorter, 

 fourth joint slightly broader to tip, obliquely truncate, tip 



