368 Coleopterological Notices, V. 



Mentnm transverse, trapezoidal, the apex feebly sinuato-truncate. 

 Ligiila with a simple slender process ; labial palpi three-jointed, 

 the first more robust than the second and twice as long, third thin, 

 not quite as long as the first. Maxillary palpi nearly normal, the 

 second joint slightly arcuate and much shorter than the third ; 

 fourth very small, Prothorax narrowed toward base, the apical 

 angles deflexed and very broadly rounded ; hypomera distinct lat- 

 erally, not attaining the apex ; base of the pronotum superposed 

 on the base of the elytra and transversely arched in the middle. 

 Elytra very short. Abdomen long, parallel, as wide as the elytra, 

 the first four segments impressed at base ; fourth and fifth equal. 

 Middle coxa3 not distinctly separated, the acetabula being simply 

 very feeble impressions posteriorly and not at all limited, the meso- 

 sternal process short but acutely triangular. Legs moderate; tibiae 

 rather slender, clothed with rather coarse pubescence, without trace 

 of spinules ; tarsi 4-4-5-jointed, the posterior rather slender, with 

 the basal joint as long as the next two ; ungues small, slender, 

 arcuate. 



Bryobiota is allied to Sipalia, but differs in the feebly impressed 

 and undefined middle coxal cavities. From Arena Fvl, it may be 

 known at once by the distinct but rather wide neck and longer 

 antennae. It is represented as far as known to me by a single spe- 

 cies from the southern salt beaches of California : — 



B. Mcolor Csy.— Bull. Cal. Acad. Sci., I, 1885, p. 311 (Phytosus). 



This species is not at all allied to Phytosus, the tibiae being com- 

 pletely devoid of spinules. 



BOI.ITOCHARA Mann. 



A widely diffused genus, decidedly isolated in general habitus and 

 coloration from all those which are structurally most closely allied 

 to it. It can always be recognized, among the Bolitocharides, by 

 the coarse subasperate sculpture and variegated elytra. Our spe- 

 cies as far as known may be separated as follows : — 



Elytra very much longer than the p)'othorax. 



Prothorax distinctly narrower than the elytra. Pacific coast. 



Elytra coarsely and less densely sculptured, usually dark only externally 

 toward apex and sometimes near the scutellum. 



Abdomen sparsely punctured notata Miikl. 



Abdomen densely punctured, especially toward base. 



californica Csy. 



