136 MEMOIRS ON THE COLEOPTERA 



ing to apical fourth and moderately reflexed ; abdomen and legs nearly 

 as in the preceding, the tarsi unusually long and moderately thick. 

 Length (cf ) 24.0 mm.; width 10.5 mm. Arizona (Huachuca Mts.), 



implicans n. sp. 

 Side margins of the pronotum either deplanate or reflexed but always 



strongly, closely and transversely rugose throughout 8 



8 Elytra without discal carinae though sometimes with vestiges thereof, 

 smooth, the punctures sparse and mutually subsimilar throughout. . 9 

 Elytra finely closely rugose and punctate, the punctures intermingled with 

 much smaller, very irregular punctuation, each with three very evi- 

 dent discal costules 10 



9 Form elongate, obovate, slightly shining, finely, sparsely punctulate; 

 prothorax quadrate, with the sides rounded and crenulate, the re- 

 flexed margin variolate; elytra slightly wider than the prothorax, 

 not very convex, the apex acute, moderately declivous; side margin 

 evanescent before the apex. Length 22.5 mm. Arizona (Gila 



River). [Pelecyphorus marginatus Lee.] marginatus Lee, 



A- Elongate-obovate, very moderately convex, deep black throughout, 

 slightly shining; head coarsely and rather closely punctate; an- 

 tennae (c?) long and thick, rather longer than the prothorax, with 

 joints nine and ten punctured throughout; prothorax fully one-half 

 wider than long, the sides parallel, strongly, evenly arcuate, very 

 finely and feebly crenulate, the surface broadly and distinctly con- 

 vex, finely but distinctly, sparsely punctate, the side margins 

 deplanate, not reflexed; basal pit moderate, broadly impressed; 

 elytra three-fourths longer than wide, widest at two-fifths from 

 the tip, the sides feebly converging thence basally and but very 

 slightly arcuate, rounded behind, the apical lobe broad and 

 moderately distinct; surface simply with sparse and very distinct 

 punctures, even, except that a distinct carinule diverges from the 

 acute margin at basal fourth, becoming gradually obsolete on the 

 declivity, the lateral margin ending abruptly at apical fifth; 

 abdomen minutely, sparsely punctulate, distinctly and more closely- 

 punctate apically; legs long, the tarsi long and rather stout. 

 Length (cf, 9) 24.0-25.7 mm.; width 10.2-11.8 mm. Three 



specimens, without indication of locality duplicans n. subsp. 



B Rather shining, similar in its very feeble convexity throughout but 

 relatively narrower and more elongate, black aboVe and beneath, 

 the elytra dark rufo-piceous; head similarly coarsely, rather 

 sparsely punctate but somewhat more sharply impressed trans- 

 versely, the vertex also more impressed medially; antennae longer 

 than the prothorax, the latter relatively much smaller than in 

 the preceding and about a fifth wider than long, the transversely 

 rugose reflexed side margins narrower, the sides much less and 

 feebly arcuate; surface with the sparse punctures much less small 

 than in the preceding, rather large for this section, somewhat in- 

 definitely and moderately impressed; elytra about twice as long 

 as wide, a third wider than the prothorax, widest but little behind 

 the middle, the large apical lobe as in duplicans, the surface with 



