118 GEO. H. HORN, M. D. 



angles not prominent, disc moderately convex, sparsely finely punctate, but 

 smoother at middle. Elytra twice as long as wide, sides parallel, surface punc- 

 tate, but smoother at sides and apex; prosternum narrowly prolonged between 

 the coxfB. Legs piceous, the anterior tibise, knees and tarsi, the middle and 

 posterior tibise at base pale. Length .18 — .20 inch. ; 4.5 — 5 mm. 



Male. — Anterior and middle first tarsal joint slightly thickened, posterior 

 tibia straight. Last ventral broadly truncate at middle, the disc smooth and 

 slightly concave. 

 Female. — Last ventral broadly oval. 



First joint of hind tarsus scarcely a tlnrd the length of the tibia, 

 and not as long as the following joints together. 



This species closely resembles varipes, but has a broader thorax, 

 differently colored legs and less pronounced male sexual characters. 



Occurs in southern California and Arizona (Morrison). 



li. varipes Lee, Pacif. E. R. Rep. p. 69. — Form oblong, moderately elon- 

 gate, beneath piceous, above bright blue. Antennse longer than half the body, 

 piceous, the four basal joints testaceous, upperside piceous, joints 2-3-4 gradually 

 longer. Head smooth, the transverse impression entire. Thorax very nearly 

 square, sides feebly arcuate, hind angles slightly prominent, disc moderately 

 convex, sparsely punctate along the base. Elytra twice as long as wide, sur- 

 face distinctly alutaceous, sparsely punctate, more finely and less distinctly at 

 the sides and apex ; prosternum very narrowly prolonged between the coxae. 

 Legs piceous, middle knees testaceous, anterior femora at apex, the tibise and 

 tarsi testaceous. Length .18 — .20 inch. ; 4.5 — 5 mm. 



Male. — The first joint of all the tarsi thickened, hind tibiae slightly arcuate. 

 Last ventral truncate at middle, with a slight sinuation each side, disc slightly 

 concave. 

 Female. — Last ventral oval at tip; tarsi not dilated, tibije straight. 



The first joint of the hind tarsus is one-third the length of the 

 tibia, and not longer than the other three joints together. 



This species varies a little in the punctuation of the thorax ; 

 usually the disc is quite smooth, sometimes sparsely punctate. The 

 description by LeConte being comparative with the species then 

 known, gives rather an exaggerated idea of the punctuation. 



The dilatation of the first joint of all the tarsi in the male, with 

 the arcuate hind tibipe, is rather a remarkable character. 



Occurs in California from San Francisco northward, extending 

 into Montana and Colorado. 



ANDROIiYPERUS Crotch. 

 Head oval, inserted as far as the eyes, which are slightly oval and 

 prominent; labrum transverse, truncate; maxillary palpi not very 

 stout, the fourth joint twice as long as the third, somewhat fusiform 

 in shape. Antennre longer than half the body, intermediate joints 

 subserrate in the male, first joint moderately stout, clavate, second 



