102 GEO. H. HORN, M. D. 



33. C cyaiiella n. sp. — Form subcyliudrif-al, very slightly depressed, color 

 bright blue or green, becoming violaceous on the elytra rarely, surface slightly 

 pubescent, beneath greenish blue ; antennse greenish % or piceous 9 > ^ little 

 more slender to the tip, the third joint as long as the next two; front slightly 

 convex in both sexes, more densely punctured in the male and vrith two small 

 callosities, more coarsely punctured in the female, the callosities almost obliter- 

 ated ; clypeus (165) with a small oval emargination at middle, arcuate each side ; 

 thorax twice as wide as long, or even a little wider, arcuately narrowed in front, 

 obliquely at base, disc convex, with a vague median depression in the larger 

 specimens, which is wanting in the smaller ones, a distinct rounded fovea near 

 the side, surface coarsely, deeply and moderately densely punctured, and in the 

 largest specimens transversely confluent near the sides; elytra a little wider 

 than the thorax, parallel, apical third arcuately narrowed, the margin scarcely 

 serrulate, the apices obtuse, disc feebly convex, the costse faintly indicated only 

 in the larger specimens and then by smoother lines, the basal fovea not deep, the 

 surface somewhat irregular, and occasionally with faint traces, the first quite 

 small, one-third from apex and near the fourth costa, the second larger on the 

 second costa in front of middle, the surface rather coarsely and not densely 

 punctured, except near the base ; body beneath rather sparsely punctate, the 

 ventral segments without lateral callosities, the last segment with serrulate 

 margin ; prosternum very distinctly lobed in front ; anterior femur with a mod- 

 erately large tooth with but few serrations externally. Length .20 - .42 inch ; 

 5-10.5 mm. (Fig. 164.) 



Jf«?e.— Pi-osternum flat, very densely punctate, sparsely pubescent; anterior 

 tibia (168) feebly arcuate, a shoi't and narrow dilatation at tip; middle tibia, 

 slightly arcuate, a little thicker at tip, posterior tibia straight ; last ventral seg- 

 ment (166) with a shallow semi-circular emargination ; last dorsal coarsely punc- 

 tate and with a rather broad, triangular notch at tip. 



Female. — Prosternum flat, more coarsely punctate than in the male ; anterior 

 tibia feebly arcuate, the middle and posterior straight ; last ventral (167 1 a little 

 longer than in the male, a barely perceptible notch at apex ; last dorsal coarsely 

 punctate and with a slight notch at tip. 



The subcylindrical form, blue color and the well lobed prosternum 

 make this species an easily recognized one. The larger specimens do 

 not vary greatly from deleta in the elytral sculpture, except that it is 

 more obliterated, while this is even lost as the specimens become 

 smaller, so that the elytra have only the punctuation remaining. 

 The color varies from green to blue and violet, as is usual in blue 

 species. The largest specimen I have seen is in the collection of 

 Mr. H. Edwards, and is that from which the figure was prepared. 



Occurs in the mountain regions of northern California near Yreka 

 and Mt. Shasta. 



34. C hnmilis n. sp.— Form subcylindrical, parallel, moderately robust, 

 color bluish green, variable in the direction of the light, subopaque, beneath 

 blue-black, with white pubescence, femora bright feneous ; antennae rather stout, 

 gradually more slender to tip, piceous, the third joint as long as the next two ; 



