CALIFORNIA ACADEMY OF SCIENCES. 317 



California (San Francisco, 2; Santa Cruz, 2). 



This remarkable species is found on the sea beach in the 

 bunches of seaweed cast up by the waves; the description 

 is taken from a male, the sixth ventral segment being broadly 

 and rather strongly sinuate at apex; the four basal joints of 

 the anterior tarsi are slightly dilated, successively less 

 strongly so, and each has on the lower surface four trans- 

 versely arranged and very long membranous papillae. The 

 first visible segment has upon the middle of the dorsal disk 

 two approximate, obliquely oval patches which are covered 

 densely with an excessively minate, coarse and brilliant, 

 fulvous pubescence, and beneath in the middle of the base 

 a round abrupt tubercle. 



For the present this species may be placed near longulum 

 in the lists of Homalium, but it appears almost certain that 

 it must sooner or later form the type of another genus. 



H. rugipenne ^- sp. — Moderately attenuated anteriorly, rather slender 

 and convex; head piceous, prothorax and elytra very dark rufo-testaceous, 

 abdomen black, legs and antenuaB rufo-testaceous, the latter slightly 

 infuscate toward tip, posterior femora clouded with piceous; integu- 

 ments shining; pubescence of the anterior portions extremely short and 

 excessively sparse, sub-erect, that of the abdomen three times as dense, 

 pale fulvous. Head moderate, slightly wider than long; sides behind the 

 eyes strongly convergent, short, very arcuate ant prominent; eyes rather 

 small, not very prominent; front broad, feebly convex, scarcely preceptibly 

 impressed at each side between the antennje; on a line through the posterior 

 portion of the eyes there are two minute elongate impressions which join the 

 broadly arcuate and strongly marked nuchal constriction, which extends 

 entirely across the base of the occiput and just behind the eyes; punctuation 

 very coarse and sparse; antennfe slightly shorter than the head and protho- 

 rax together, slender, last five joints forming a slender club; basal joint the 

 longest, more than twice as long as wide, second two-thirds as long, much 

 more slender, third very slender, as long as the fourth and fifth together, 

 the latter each longer than wide. Prothorax widest at about two-fifths its 

 length from the apex, where it is about one-fourth wider than the head and 

 one-third wider than long; sides evenly and strongly arcuate anteriorly, 

 moderately convergent and straight toward the basal angles; the latter obtuse 

 and very slightly rounded; base broadly, evenly and modei'ately arcuate, 

 four-fifths as wide as the disk and just visibly narrower than the apex, the 

 iatter broadly and very slightly incurvate; apical angles evenly rounded. 



