74 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 92 
fourth, remainder somewhat shorter, not reaching the middle of the | 
elytra. Prothorax about a third wider than long, widest before the 
middle, surface smooth, impunctate, entirely pale. Elytra elongate 
oblong, with well-marked humeral prominences, surface finely alu- 
taceous, entirely pale, lateral margin not visible from above. Body 
beneath shining, darker brown in color, with fine pubescence. Legs 
pale with deeper brown tarsal joints, all tibiae with tiny spur, first 
hind tarsal joint not so long as the rest together. Anterior coxal 
cavities closed(?). Length 3.5 mm.; width 1.3 mm. 
Type, male, in the collection of the California Academy of Sciences. 
Type locality.—Olancha, Calif., collected May 19, 1917; in the Van 
Dyke collection, California Academy of Sciences. 
Remarks.—This species, of which only a single specimen has been 
examined, is closely related to Z. curvatus Fall and ZL. crassicornis 
Fall but not very closely allied to the varicornis group. It agrees with 
Fall’s two species in having a broad head, the prothorax wider before 
the middle, the elytra rather convex,so that the lateral margin is not 
visible from above, and in having a short hind tarsal joint. The 
aedeagi of all three species are short and relatively broad. The male 
antennae are not thickened in this species as they are in L. crassicornis, 
and the beetle is not so broad as but more elongate than L. curvaius, 
with a differently shaped aedeagus. 
U.S. GOVERNMENT PRINTING OFFICE: 1942 
