346 MEMOIRS ON THE COLEOPTERA 



apically, the fifth joint more than one-half longer than wide, nar- 

 rowed apically, closely joined to the fourth but not quite so wide; 

 hind tarsi slender, three-fourths as long as the tibiae. Length 15.0 

 mm.; width 6.3 mm. Arizona (San Bernardino Ranch, Cochise Co.). 

 [Cremast. planatus Lee., and depressus Horn]. Depresses is from 



southern California planata Lee. 



Prothorax larger and more transverse, nearly one-half wider than long. 

 Body larger and stouter, rather dull in lustre, deep black and non- 

 tomentose throughout; head larger, fully half as wide as the prothorax, 

 nearly as in the preceding, except that the punctures are larger and 

 subequal throughout, more shallow on the clypeus but extending, 

 coarse and distinct, along the lateral depressions nearly to the deep 

 basal fossa, which is impunctate; basal antennal joint with its outer 

 face feebly concave, attenuate basally and with longitudinal rugulos- 

 ity ; prothorax widest near apical third but with the sides more evenly 

 arcuate throughout, much less straight basally than in the preceding; 

 base transverse medially, with a small projecting angulation at the 

 middle, the angles nodular, with a deep oblique inner sulcus, the 

 nodular part frequently lost; apical angles as in planata but with 

 the outer fossa larger and deeper, the tuft of orange spongiose pile 

 internally at apex more distinct; surface more broadly and feebly 

 impressed along the middle, the punctures larger, very shallow, dense 

 in the median depression, gradually rather close and less shallow but 

 not deep and of similar size laterally; scutellum large, acuminate, 

 with large shallow annuli aggregated only at base and along the 

 sides; elytra three-fifths longer than wide, barely more than a third 

 wider than the prothorax, parallel, in general structure as in planata, 

 except that the costae are almost completely obsolete, the very elon- 

 gate annuli almost similar but longer and narrower and with the 

 incised lines finer, the deep punctures on the lateral carina more 

 elongate than in planata; pygidium similar but with the annuli 

 larger and less incised; legs longer; anterior tibiae longer, not so 

 slender, tumid externally at and near the apex but not dentate, the 

 anterior tarsi much longer, even longer than the tibiae, the fourth 

 joint more quadrate, somewhat longer than wide, similarly with an 

 internal apical incisure to receive the fifth joint when internally 

 flexed, but the notch is deeper, the fifth joint longer, almost twice as 

 long as wide; posterior tarsi longer though scarcely three-fourths as 

 long as the tibiae, each joint similarly somewhat inflated apically. 

 Length 17.7 mm.; width 7.7 mm. California (Alameda Co.), 

 Nunenmacher ampla n. sp. 



My single example identified above as planata Lee., is consider- 

 ably smaller than the type of LeConte, which measures 18 mm., 

 according to the description, but the prothorax is of the same form 

 apparently, "latitudine paulo breviore," as it is also in depressa, 

 "one-fourth broader than long"; this is very different from the 

 dimensions noted in ampla, so that the latter, on this account, as 



