NORTH AMERICAN COLEOPTERA. 123 



Male, — Antennal club longer than all the preceding portion. Spurs of hind 

 tibice free, the inner much longer than the outer. Last ventral segment vaguely 

 concave. 



The claws are slender, the upper portion longer than the lower. This 

 species resembles Lachnosferna volvula so closely that one might readily 

 be mistaken for the other. 



One specimen, Gleorgia. Morrison. 



I.ISTROCHEL,US Blanch. 



L.. flaTipennis n. sp. — Subcylindrical, moderately elongate, head and 

 thorax rufo-testaceous, elytra yellowish testaceous, surface shining. Head coarsely 

 not closely punctate, clypeus at middle smoother, its anterior margin subtruncate 

 and narrowly reflexed.- Thorax transverse, widest at middle, the sides very ob- 

 tusely subangulate, the margin not crenulate, and with rather distantly placed 

 short stifl" setae, surface shining, very sparsely punctate, the punctures a little 

 closer along the apical margin. Elytra coarsely sparsely punctate, sutural costa 

 feebly elevated the oblique discal costa scarcely evident. Pygidium convex, very 

 sparsely, coarsely punctate. Metasternum yellowish testaceous, moderately 

 closely punctate, clothed with fine silken pubescence. Abdomen pale piceo-testa- 

 eeous, v^y sparsely punctate at the sides, granulate along the middle. Length 

 .60 inch; 15 mm. 



Male. — Club of antennae long and slender. Abdomen longitudinally concave 

 at middle, the last ventral segment longitudinally impressed, the penultimate 

 less so_. Claws pectinate on all the tarsi, the pectination double. Spurs of hind 

 tibise slender. 



Female. — Club of antennae not longer than the funicle. Claws similar on all the 

 feet, very indistinctly serrulate their entire length with moderate tooth at middle. 



This species is closely related to disparilis, but differs in color, size 

 and sculpture. The pectination of the % claws is also different, being 

 fine and equal in the present species, unequal and partly coarse in dis- 

 parilis. 



Collected by Mr. Morrison in Arizona. 



L*. gracilis n. sp. — Form rather slender cylindrical, rufo-testaceous, surface 

 distinctly pruinose. Head sparsely coarsely punctate, clypeus subtruncate in 

 front, the margin narrowly reflexed. Antennae nine-jointed, the third and fourth 

 joints being closely connate, club paler but little longer than the funicle. Thorax 

 transverse, wider at base than ajjex, widest at middle, sides obtusely angulate, the 

 margin crenulate and fimbriate, surface sparsely punctate, punctures less abundant 

 near the hind angles. Elytra not wider than the thorax, sparsely coarsely punc- 

 tate, sutural costa feebly elevated, oblique discal costa obsolete. Pygidium very 

 sparsely finely punctate. Body beneath, sparsely pilose, the metasternum finely 

 not densely punctate, opaque. Abdomen paler, sparsely punctate. Length .52 

 inch ; 1.3 mm. 



Male. — Anterior claw of front tarsi biseriately finely pectinate, the outer claw 

 more coarsely pectinate with a tooth at middle. Middle claws biseriately pecti- 

 nate. Posterior front claw biseriately pectinate, the other claw serrate at tip and 



