398 Memoirs on the Coleoptera 



width. Length (cf) 2.5-2.7 mm.; width i. 25-1. 3 mm. Nebraska 

 (Lincoln). Two specimens. 



Distinguishable at once from any of the other species alHed to 

 perscita, by the larger, flatter and more trapezoidal scutellum; 

 exulans, from New Mexico, is decidedly larger, with less abbreviated 

 prothorax and different arrangement of the elytral vestiture near 

 the scutellum. 



Of the picumnus section, besides that species and albotecta, I am 

 obliged to recognize below five additional species as follows: 



Centrinaspis floridensis n. sp. — Evenly oval, convex, blackish, with 

 rufescent legs, beak and antennae, clothed densely throughout with 

 decumbent whitish scales, linear in form, moderately wide and uniform 

 on the upper surface, merely a little broader beneath; beak in the female 

 evenly arcuate, rather slender, gradually feebly tapering and as long as 

 the elytra, the antennae slender, inserted at three-sevenths, the first 

 funicular joint as long as the next four and much thicker, the second 

 slightly longer than the third; club rather small, oval, as long as the 

 preceding four joints; prothorax two-fifths wider than long, the sides 

 rather strongly converging and evenly arcuate from base to the very 

 feeble apical sinuation; apex much less than half as wide as the base; 

 punctures close, moderately large; scutellum small, densely squamose; 

 elytra only very slightly longer than wide, rapidly parabolic, with some- 

 what swollen humeri, slightly wider than the prothorax and three-fifths 

 longer; striae moderately coarse, deep; intervals from two and one-half 

 to three times as wide as the striae, confusedly and closely punctato- 

 rugulose, the sculpture concealed however. Length ($) 2.7 mm.; 

 width 1. 28-1. 3 mm. Florida (locality unrecorded). Two specimens. 



Separable easily from picumnus by its larger size, more broadly 

 oval, rather more convex form, white — not yellowish — and dis- 

 tinctly wider scales, longer beak and somewhat longer and stouter 

 legs. From albotecta it differs in its distinctly larger size, stouter 

 form and much longer beak in the female; albotecta is abundant in 

 Florida, and I also have a specimen from Covington, Louisiana, 

 which is almost typical, being merely somewhat narrower in outline. 

 The following, however, though closely allied to albotecta, I believe 

 to be different : 



Centrinaspis lasciva n. sp. — Similar to albotecta, except that the body 

 is still smaller and narrower, the scales somewhat more obscure whitish 

 in tint and more slender, the beak in the female decidedly shorter and 

 less arcuate, being only half as long as the body, the prothorax smaller 

 and relatively shorter, nearly one-half wider than long and distinctly less 

 than one-half as long as the elytra, the legs shorter and more slender. 

 Length (9 ) 1.9 mm.; width 0.8 mm. Texas (Alpine, — 4400 ft. elev.), — 

 Wickham. 



