410 Memoirs on the Coleoptera 



as the three following, the club elongate-ovoidal; prothorax one-half 

 wider than long, rapidly conical and with feebly arcuate sides from base 

 to apex, which is much less than half as wide as the base, the latter 

 transverse, the lobe abrupt, small, rounded and somewhat more coarsely 

 and closely squamose; punctures fine, not very dense but forming longi- 

 tudinal ruguliform lines, the smooth median line not entire; scutellum 

 nude; elytra with converging and broadly arcuate sides throughout, 

 not quite one-half longer than wide, at the feebly tumid humeri much 

 wider than the prothorax, two and one-half times as long, the humeri 

 gradually rounding to the base; striae moderately coarse, deep, the 

 intervals feebly punctulate and nearly three times as wide as the striae; 

 anterior coxae separated by a third of their width. Length (9) 3-7~ 

 3.9 mm.; width 1.65- 1.75 mm. Guatemala (near the city). Two 

 examples. 



After searching the work of Mr. Champion carefully I am unable 

 to find anything approaching this species and so conclude that it is 

 undescribed. 



The two following, although apparently belonging to the same 

 genus, differ considerably in the less elongate beak, which is notably 

 thickened and sometimes more arcuate basally: 



*Conocentrinus incrustatus n. sp.— Rather stouter, rhomboidal, deep 

 black throughout the body, legs and antennae; upper surface clothed 

 very closely with uniform brownish-white scales, only a little less broad 

 and transversely arranged on the pronotum and in about three close 

 irregular series on the strial intervals; under surface with larger and 

 extremely dense white scales; beak in the male a little longer than the 

 head and prothorax, evenly arcuate throughout, gradually thickened 

 basally, smooth, squamulose sparsely at the sides basally, the antennae 

 inserted distinctly beyond the middle, and, in structure, nearly as in the 

 preceding species; prothorax two-fifths wider than long, evenly conical, 

 the very oblique sides barely at all arcuate, the apex feebly subtubulate 

 and narrow, barely over two-fifths as wide as the base, the basal lobe 

 gradually formed, distinct; punctures rather coarse, opaque and densely 

 coalescent, with very narrow and slightly tumid median line; scutellum 

 nude; elytra rapidly parabolic, rather narrow at tip, with somewhat 

 tumid humeri, a little though evidently wider than the prothorax and 

 distinctly more than twice as long, the striae rather deep, moderately 

 coarse, not at all concealed; prosternum canaliculate throughout but 

 with unbroken crust of scales, the coxae separated by less than half their 

 width; abdomen unmodified in the type. Length (cf ) 4.2 mm.; width 

 2.0 mm. Guatemala (Capetillo). One example. 



For some time I regarded the type of this species as the female 

 of GercBUS spiniger Chmp., but the structure of the beak seems 

 certainly to indicate the male, although there are no abdominal 

 modifications and no prosternal spines or prominences. In the 



