TENEBRIONID^; 153 



becoming rather acute and crenate basally, the surface even, nearly 

 as in tularensis but rather more shining and with the creases some- 

 what less distinct; abdomen with a coarse reticulation of impressed 

 anastomosing creases, the last segment finely, sparsely punctate, 

 becoming rather abruptly coarsely punctato-rugose in about apical 

 third; legs, tarsi and antennae short. Length (9 ) 21.0 mm.; width 

 8.4 mm. California, Morrison amplicollis n. sp. 



Form rather more slender and subcylindric, very convex, deep black, 

 rather shining; head strongly, transversely impressed, the larger 

 punctures well separated, the smaller very conspicuous; prothorax 

 scarcely visibly narrower than the elytra, scarcely more than one- 

 half wider than long, evenly and broadly convex, without impressions, 

 nearly as in amplicollis but more shining, less strongly rounded at 

 the sides and with the porrect surface along the sides narrower and 

 much more abruptly formed, the edge rugose but without so clearly 

 defined a beading, the apical angles more bluntly rounded; elytra 

 evidently more than twice as long as wide, widest at the middle, 

 the sides very evenly arcuate throughout, the apical lobe not clearly 

 demarcated, the surface very convex, even, feebly creased, with the 

 reticulations slightly convex, the excessively minute sparse punctules 

 scarcely visible; side margins bluntly prominent and deeply, trans- 

 versely creased basally; abdomen nearly as in amplicollis throughout, 

 the punctures and rugulosity of the apical part of the last segment 

 much less marked; legs evidently longer and stouter, the prosternum 

 and propleura similarly coarsely, sparsely and perforately punctate. 

 Length (9 ) 22.5 mm.; width 8.6 mm. California (locality and col- 

 lector unrecorded) integer n. sp. 



8 Body large and very stout, strongly convex, deep black and very 

 shining throughout; head moderately punctured and impressed, 

 also with a small feeble longitudinal impression on the vertex, and, 

 behind the impression between the eyes, a very small feeble tubercle; 

 prothorax very convex, polished, three-fourths as wide as the elytra, 

 not quite one-half wider than long, the apex evidently narrower than 

 the base, deeply sinuate, the sinus with a broadly obtuse medial 

 projection, the angles acute and not blunt, not at all everted; sides 

 strongly, very evenly arcuate; surface even, very minutely, sparsely 

 punctate, more coarsely but not densely so on the lateral slope and 

 side margins, which are abruptly and extremely narrowly declivo- 

 explanate, much less widely so than in any other species of this 

 group, the edge finely, feebly crenulate and narrowly, faintly beaded, 

 basal angles very obtuse though evident because of a very feeble and 

 broadly diffuse sinuation before them; elytra three-fourths longer 

 than wide, much more obliquely and rapidly subacute posteriorly 

 than in the preceding species, widest at the middle, the sides arcuate; 

 ends of the basal margin not at all modified ; surface very convex, 

 even, nearly as in integer but more polished, the side margins basally 

 rather distinct, very coarsely and deeply creased transversely; 

 abdomen throughout similar; legs rather long and notably thick; 

 prosternum between the coxse peculiarly and densely rugose, smooth 



