SOUTHERN CALIFORNIA ACADEMY OF SCIENCES 59 
elongate and subequal, the second as long as the third and 
fourth combined; mentum very large, flat, trapezoidal, i: ax- 
illary lobe long, slender, hooked at tip, loosely serrate within; 
labial palpi slender, 3-jointed, the maxillary large and well 
developed, densely hairy; prothorax at apex as wide as the 
head, gradually and moderately narrowed thence to the base, 
the sides nearly straight, the hypomera delimited from the 
pronotum by a very fine beaded edge, broad im the middle and 
narrowing arcuately to base and apex; scutellum very large, 
triangular; elytra shorter than the prothorax, the suture net 
beaded; abdomen more than half as long as the body, parallel, 
the segments not impressed at base; metasternum very short, 
the episternum large, gradually and rapidly narrowed an- 
teriorly ; legs rather short and stout; coxe very large, the in- 
termediate acetabula apparently well defined throughout; tihie 
pubescent and finely subspinulose; tarsi short and rather thick, 
4-4-5 jointed, the first four joints of the posterior diminishing 
eradually and slightly in length, the fifth not quite as lone as 
the preceding three combined. 
This genus differs from Thinusa in its very long antenne, 
broad hypomera, small eyes, and in many other characters. 
The type is the following: 
Bryothinusa cataline Casey, n. sp. 
Pale yellowish-brown in color throughout the body, legs and 
antenne, the abdomen feebly clouded with piceous from rather 
before the middle nearly to the apex, extremely minutely and 
closely punctulate throughout, the pubescence pale and rather 
conspicuous; head rather large, flat or broadly impressed above, 
the antennx half as long as the body, slender, just visibly in- 
crassate distally, bristling throughout with short and rather 
stiff erect pubescence, the tenth *joint distinctly longer than 
wide, the eleventh about as long as the preceding two com- 
bined, gradually and acutely conoidal; prothorax distinctly 
wider than lone, broadly, feebly coneave toward the middle 
throughout the length, except at the apical margin; base super- 
posed over the base of the elytra, the latter flat bi-obliquely 
truncate at tip, as wide as the prothorax and four-fifths as 
long, the sides parallel; abdomen strongly margined, equal in 
width to the elytra. Length, 2.15 mm.; width, 0.48 mm. 
OTHER COLEOPTERA. 
The following beetles, kindly determined by Prof. Fall, were 
all of common occurrence during storms: Cuchrus mimus 
Horn, Amara insignis Dej., Calathus obscurus Lec., Platynus 
maculicollis Dej., Euryme topon convexi colle Lec., Coniontis 
elliptica Casey, Nyctoporis carinata Lec., Eulabis pubescens 
Lee., and Blapstinus rufipes Casey. 
