176 • Memoirs on the Coleoptera 



cipally remarkable and isolated in the strongly elevated reflexed 

 sides of the prothorax. The species named ovalis by Motschulsky 

 is related to striata puncfatus and is of about the same form, size 

 and sculpture, but the prothorax is relatively smaller and especially 

 much narrower or less anteriorly inflated; an excellent outline 

 drawing was given by the author, rendering its identification quite 

 certain and I have an example which resembles this drawing 

 exactly. 



It seems now that the species which I described as sinuatus, 

 probably from Sonoma Co., is the true interruptus, about 15.5 to 

 18.5 mm. in length, and that that identified by me under that name 

 (Annals N. Y. Acad., IX, p. 333), a much smaller species, is still 

 unnamed and may be called parvulicollis (nom. nov.). In both 

 this and interruptus the prothorax is moderate or small in size, 

 smaller in parvulicallis, while in constrictus Lee, which I formerly 

 identified as dissolutus Schm., the prothorax is relatively much 

 larger and the body rather narrower and less ventricose. In 

 corpulentus Csy., the hind body is notably short and inflated, but 

 the prothorax is much larger and more inflated than in parvulicollis, 

 it occurs at Oakland. Dissolutus Schm., would now appear to be 

 a species from the western slopes of the Sierras, and a female at 

 hand from Mokelumne Hill, Calaveras Co., has a general outline 

 of the elytra somewhat as in oreophilus, the male probably much 

 less ventricose; the sculpture is coarse and the striae much broken 

 up toward the sides. Compositus Csy., is a very distinct species, 

 with relatively larger prothorax and deep and strongly punctured 

 but only very slightly and sparsely subinterrupted striae, distinct 

 to the side margins, being only very slightly irregular on the flanks. 

 All just mentioned, from interruptus (sinuatus) to this point, have 

 strong elytral sculpture and more or less interrupted striae; and 

 all except corpulentus have bluish or violet reflexed elytral margins. 



Brennus decipiens Csy., is a species quite distinct from striato- 

 punctatus, being smaller, with closer elytral striation and relatively 

 much narrower thoracic base. The following species is allied 

 somewhat to decipiens, but has the elytra more oblong and much 

 more depressed and the antennae longer; the first anterior male 

 tarsal joint is pubescent beneath in less than apical half, whereas 

 in decipiens the dense pubescence extends to basal two-fifths: 



