Feb., 191 5 Bulletin of the Brooklyn Entomological Society 11 



Prothorax longer than broad, with sides distinctly rounded at 

 base, broadest part just in front of base from which point the 

 sides are straight and but slightly convergent until just in front 

 of apex where they become rather suddenly constricted. Upper 

 surface flattened near base, punctured beneath and at sides with 

 moderately large, deep and well spaced punctures, above on outer 

 side with somewhat finer and at base near median line with coarser, 

 closer and deeper ones, and at base in front of scutellum, a short 

 smooth rudimentary crista with an evident depression on each 

 side. Basal margin just evidently bisinuate. 



Elytra but slightly wider than thorax, somewhat convex above, 

 striate, striae moderately coarsely and serrately punctured, inter- 

 vals convex and with a single row of barely perceptible punctures. 



Body beneath punctured with moderate-sized and well-spaced 

 punctures except on meta-episternum where closer together. 



Length, 5 mm., width 1.25 mm. 



Type in my own collection, paratypes in U. S. Nat. Mus. and 

 Cal. Acad, of Sciences. 



Occurs in the dead branches of two species of perennial and 

 bush lupines {Lupinus arhorens Sims, and L. chamissonis Esch.), 

 on the sand hills on the southern boundary of San Francisco, Cal. 

 It most likely will be found in similar places at least as far south 

 as Monterey and as far north as Tomales Bay. It is generally 

 found in company with the more common Rhyncholus pallens 

 Casey, which likewise lives only in lupines. 



This species among West Coast species might be confused with 

 small specimens of C. piniphiliis Boh. and C. ponderoscc. From 

 the former it can best be separated by the shape of the thorax. 

 It also has a broader and shorter rostrum, a less flattened upper 

 surface and less evident crista and the punctures of the thorax 

 and elytra are generally finer and not so close together. From 

 the latter it differs by the shape of the thorax, by the broader and 

 shorter rostrum and the finer and less closely placed punctures. 

 It is proportionally narrower and more cylindrical than either. 

 More than fifty specimens have been examined and they all agree 

 with the above though there is of course considerable individual 

 variation. Immature specimens are more piceous than mature as 

 is the case in general. 



