18 J. L. LECONTE, M. D. 



angles slightly divergent, earinate, lateral margin entire, disc convex, coarsely and 

 closely punctate. Elytra rather feebly striate, striae punctured, intervals flat, 

 closely punctate, rugose at base. Prothorax beneath very densely punctate, the 

 flanks opaque. Metathorax and abdomen finely and very closely punctulate. 

 Hind coxal plates rapidly wider internally, the free angle rounded : 8 mm. 



This species might readily be mistaken for lijnosus, but the form of 

 the hind coxal plates and the punctuation of the prothorax beneath will 

 distinguish it. 



Western Nevada (Morrison). Cabinet of Dr. Horn. 



14. A. apiCRlis n. sp. — Fusiform, piceous, opaque. Elytra dull yellow with 

 apical fourth piceous, legs ferruginous. Antennse piceous, not attaining tlie tips 

 of the hind angles of the thorax, joints 2-11 equal, 4-10 distinctly serrate. Head 

 densely punctate, feebly shining. Thorax longer than wide, gradually narrower 

 to the front, sides slightly arcuate in front, posteriorly straight, the hind angles 

 not divergent beyond the line of the sides and strongly earinate, lateral margin 

 acute, disc moderately convex, densely punctate and opaque, sparsely clothed with 

 short gray pubescence. Elytra gradually narrower to tip, twice as long as the 

 thorax, striate, strise punctured, intervals slightly convex, moderately densely 

 punctate, slightly rugose at base, sparsely clothed with gray pubescence. Pres- 

 ternum moderately closely punctate, flanks very densely punctate and opaque. 

 Metasternum and abdomen closely punctate and finely pubescent. Hind coxal 

 plates rapidly broader internally, the free angle very obtuse. Length 7.5 mm. 



Rather more fusiform than our other species of this genus. The 

 piceous space at the apex of the elytra extends slightly along the suture 

 and side margin. 



One specimen % , Yreka, California. 



17. A. torquatus n. sp. — Form parallel, piceous. Thorax dull red, legs fer- 

 ruginous. Antennrebrown, joints 2-11 equal, 4-10 distinctly serrate. Head pice- 

 ous, coarsely and closely punctate. Thorax longer than wide, sides nearly parallel, 

 slightly arcuate in front, hind anglesifeebly divergent, distinctly earinate, lateral 

 margin distinct, acute, disc moderately convex, coarsely and very closely punctate, 

 sparsely clothed with pale brown pubescence. Elytra rather deeply striate, strife 

 punctured, intervals slightly convex, punctate, rugose near the base, sparsely pu- 

 bescent. Prothorax beneath dull red, the prosternum piceous posteriorly and not 

 densely punctate, flanks more coarsely and densely punctate. Metasternum and 

 abdomen more finely but not very closely punctate. Hind coxal plates rather 

 abruptly dilated internally the free angle obtuse. Length 7 mm. 



This species resembles in form and color some of the smaller varieties 

 of Gorymhites conjungens. 

 Yosemite Valley, California. 



18. A. luontanus n. sp. — Form robust, piceous, elytra luteous, legs yellowish 

 brown. Antennaj yellowish brown not attaining the hind angles of the thorax, 

 joints 2-1 1 equal, 4-1 feebly serrate. Head coarsely and deeply punctate. Thorax 

 a little longer than wide, sides parallel, slightly arcuate at the front angles, hind 

 angles earinate, not divergent, lateral margin distinct, disc moderately convex, 

 coarsely, closely and equally punctate, very sparsely pubescent, general color pice- 



