Goleopterological Notices^ VII. 321 



throughout the length, much confused in more than lateral fourth. 

 Length 25.0 mm.; width 11.7 mm. 



California (El Dorado and Sonoma Cos.). The description 

 refers to a single mutilated female specimen recently purchased 

 from Mr. Rivers. The species is remarkably distinct in its very 

 broad and peculiarly sculptured elytra and deeper reflexed mar- 

 gins of the pronotum ; it is one of the largest of the genus. The 

 elytra are more inflated but rather less convex and more oblong 

 than in ventricosus. 



15. B. ventricosus Dej.— Spec, V, 1831, p. 527; Esch.: Zool. Atl., 

 1833, p. 21, pi. 25, fig. 1 ; Horn : Trans. Am. Ent. Soc, VII, 1878, p. 181 ; 

 aliernatus Mots.: Bull. Mosc, 1859, ill, p. 162, pi. 3, fig. 12. 



Strongly ventricose, shining, the pronotum and posterior parts of 

 the head alutaceous ; color deep black throughout. Head stout 

 but much elongated, very feebly wrinkled throughout, except be- 

 hind the faint transverse nuchal impression just behind the eyes ; 

 gense with a distinct and acutely angulate incision ; antennae |- 

 as long as the bod}'^, gradually narrowed from the second joint, 

 the first moderately dilated and but little longer than the third. 

 Prothorax relatively rather small, as wide as long, moderately in- 

 flated and rather strongly arcuate anteriorly, widest at apical 

 third, broadly sinuate behind, the sides becoming parallel for only 

 a very short distance before the basal margin, the latter a little 

 more than ^ the maximum width but barely as wide as the head ; 

 disk feebly convex, the impressions slight and superficial ; reflexed 

 lateral margins distinct though moderate in depth. Elytra 

 broadly inflated and very convex throughout the width, oval, very 

 full at the humeri, |- longer than wide, 3^ times as long as the 

 prothorax and 2|- times as wide ; reflexed margin moderate ; 

 striae rather fine but deeply impressed, finely and obsoletely 

 punctured, more distinctly so sublaterally ; intervals broadly 

 <!onvex, equal though alternately with imperfect supplementary 

 series of punctures, abruptly much confused in nearly lateral 

 third. Length 19.7-21.4 mm.; width 9.5-10.2 mm. 



California (Sta. Cruz Co.). The description is taken from two 

 female examples, which are the only representatives included in my 

 cabinet at present. Alternatus was referred by Dr. Horn to 

 striatopunctatus as a synonym, but the figure of Motschulsky 

 indicates a species with very much fuller humeri than is ever 

 the case in that species, and with a less anteriorly inflated 



