768 Coleopterological Notices, VI. 



tingiiished by its coarse el3'tral punctures, hispid appearance and 

 coloration. It is represented by four specimens. 



]V. constrictiis. — IModerately stout, scarcely shining, pale oclireo-testa- 

 ceons througliout, the head frequently, the ahdonien seldom, darker; elytra 

 fasciate. Head equal in width to the prothorax, narrower in the female, mi- 

 nutely punctiite, reticulate, densely pubescent and dull; eyes large, longer 

 than the tempora; antennie somewhat slender, moderate in length. Prothorax 

 subglohular, slightly wider than long, the sides oblique and sinuate behind; 

 disk rather coarsely, closely punctate, densely and coarsely pubescent; horn 

 well developed, similar in the sexes, somewhat coarsely and deeply crenulate, 

 broadly rounded and entire for a short distance at apex, Avidely dilated, 

 strongly constricted at base, the crest broad, abruptly elevated, broadly rounded 

 at apex and strongly delined throughout the sides and apex by an elevated 

 black and entire ridge. Elytra a little less than twice as long as wide, dis- 

 tinctly dilated at apical third and three-fourths wider than the prothorax, 

 evenly rounded at apex, a little more broadly so in the male, the humeral im- 

 pression very feeble; disk densely and rather coarselj^ punctate, densely 

 clothed with coarse yellowish pubescence, the erect seta' somewh;it long, coarse, 

 numerous and conspicuovis. Under surface densely and rather coarsely ])ubes- 

 cent. Length 2.5-11") mm. ; width 0.95-1.2 mm. 



California (coast regions). 



The sexual differences at the posterior extremity' of the bod}^ 

 are almost completely undeveloped, and exist only in the slightly 

 more truncate elytra of the male. This species, which is repre- 

 sented by a large series, has been heretofore almost universally 

 confounded with the eastern monodoi), which it strikingly resem- 

 bles in facies. It is however widely and constantl}"^ distinct in 

 the form of the thoracic process, as ma}' be seen at a glance if 

 the separated series be even casual!}' examined. The elytral mac. 

 Illation is nearly as in vionodon, except that the subapical black 

 cloud on each elytron, which is almost constantly present in that 

 species, is here quite as constantly absent. In the vicinit}' of 

 San Diego there is, however, a variety of consfrictus which has 

 the lateral and subapical dark patches frequentl}' visible, and the 

 thoracic punctures a little finer and sparser, agreeing rigorously 

 with the northern forms in the structure of the thoracic process, 

 except possibly that it is a little more pointed as a rule. 



I¥. ro1)llstll!Si. — Very stout, dull from the density of the vestiture, pale 

 ochreo-testaceous throughout, each elytron with a large rounded scutellar sjiot 

 and a transverse fascia at apical third, abruptly interrupted very near the 

 suture, but prolonged narrowly along the latter slightly beyond the middle. 

 Head very much smaller than the ])n)thorax, finely, closely punctate but shin- 



