BYRRHID.E 49 



sides and gradually arcuately acute behind but with the lustre not 

 quite so polished, the micro-reticulation somewhat more evident 

 throughout, notably coarse and polygonal on the elytra though very 

 feebly denned; abdomen shining, finely, sparsely punctate, the last 

 segment coarsely, except, at base, but not densely, having (c^ 1 ) a 

 large posteriorly pointing equilatero-triangular central space of dense 

 punctures, somewhat as in analis, but not impressed, more in- 

 definitely limited and clothed with shorter, much less conspicuous 

 pale hairs. Length 1.4-1.6 mm.; width 0.65-0.73 mm. Southern 

 California evanescens n. sp. 



7 Lustre rather dull, the outline notably short and broad though rather 

 acutely ogival at apex. Black, convex, the vestiture coarse, close, con- 

 spicuous and persistent, obscure fulvous, distinctly though indefi- 

 nitely mottled with cinereous; head with pliciform sculpture which 

 is replaced by isolated coarse punctures on the occiput: prothorax 

 short as usual, the strongly converging sides straight, the surface 

 with a minutely striiform line basally, the punctures fine, well 

 separated, not feebler toward the sides as usual but evidently deeper, 

 a little larger and somewhat less widely separated, with the inter- 

 spaces not at all reticulate but smooth and polished; elytra evidently 

 less than a fourth longer than wide, the sides parallel, feebly arcuate 

 and rounding at the humeri, gradually rounding and converging 

 behind the middle, the apex somewhat acutely ogival, the punctures 

 a little larger than those of the pronotum, rounded but not very 

 deep, separated by rather less than twice their diameters; abdomen 

 finely, rather sparsely punctate, the last segment deeply and densely 

 almost throughout, without a distinct spot of condensed punctures 

 and pubescence. Length 1.65-1.8 mm.; width 0.8-1.05 rnm. 

 North Carolina, Florida and Louisiana. [Limnichus ater Lee., 

 Proc. Acad. Phila, 1854, p. 117] ater Lee. 



Lustre strongly shining, more narrowly oval and smaller in size, the 

 vestiture less close-set and much less conspicuous, more easily de- 

 nuded 8 



8 Outline oval, rounded at the sides, gradually acutely ogival behind 

 from rather before the middle of the elytra, polished, deep black, 

 without any sort of metallic lustre, the sparse vestiture coarse and 

 rather long, mingled fulvous and cinereous; head with pliciform sculp- 

 ture, becoming not very large, widely isolated punctures posteriorly; 

 prothorax short, with the rapidly converging sides straight, having 

 a finely striiform median line from the middle nearly to the base, 

 the punctures rather fine but deep, well separated, becoming even a 

 little stronger but scarcely at all closer laterally, where the inter- 

 spaces are highly polished and without trace of micro-reticulation; 

 elytra in outline nearly as in ater but rather more elongate, fully a 

 fourth longer than wide, the punctures a little larger than those of the 

 pronotum but not so deep, separated by more than twice their own 

 widths, evanescent as usual laterally and apically; abdomen convex, 

 shining, finely, sparsely punctate, the last segment more coarsely 

 punctate only toward the sides and about the apex, without a definite 



T. L. Casey, Mem. Col. Ill, Feb. 1912. 



