104 GEO. U. HORN, M. D. 



of Europe, in which the body beneath is piceous and the elytra at 

 base broadly black. 



One specimen $ , Canada, Pcttit. 



T. jooosiis. Say. — Piceous shining, thorax, elytra and legs rufo-testaceous. 

 Head black, shining, antennae testaceous, outer joints darker. Thorax not 

 wider than the elytra, smooth, shining, twice as wide as long, sides rapidly 

 narrowing to apex, hind angles rounded. Elytra very nearly as long as wide, 

 conjointly feebly eniarginate, surface sparsely punctulate and pubescent, color 

 rufo-testaceous, rarely with a lateral and circum-scutellar darker space. Abdo- 

 men piceous, apical margins of the segments paler, surface sparsely punctulate 

 and pubescent. Body beneath piceous, abdomen more distinctly punctured than 

 above. Legs, coxse and prothorax testaceous. Length .16 inch; 4 mm. 



This species is also widely distributed like maculipevnis. It can 

 only be confounded with chri/somelhius which is rather more robust in 

 form and the thorax distinctly broader than the elytra. 



The lateral and basal spots are very often entirely wanting. 



T. clirysoinelinti>, Linn. — Piceous shining, thorax, elytra and legs, rufo- 

 testaceous. Head black, shining, antennse testaceous, outer joints somewhat 

 darker. Thorax not twice as wide as long, broader than the base of the elytra, 

 sides strongly arcuate, surface smooth, shining. Elytra as in jocofi2is. Abdomen, 

 body beneath and legs as in Jocosus. Length .16 inch; 4 mm. 



This species is somewhat variable; first, the typical form as de- 

 scribed, (occurring in Canada) ; second, macvUcoUis, Lee, with a 

 poorly defined darker thoracic space; third, acamhis, Say, smaller in 

 size with the abdomen much retracted. The latter character will 

 strike any student of the family as one of no value whatever. I have 

 endeavored to find other characters affording sufficient basis for the 

 separation of these as distinct species but without avail, the differences 

 between this and Jocosus being slight enough. 



Same distribution as maculipe,nnis. 



T. calitornicus, n. sp. — Color above entirely piceous in maturity. Head 

 black, anlennce piceous, paler at base. Thorax as in jocosus, sides slightly more 

 arcuate. Elytra piceo-castaneous, sparsely punctulate and pubescent, form of 

 jocosus. Body beneath piceous, abdomen above and beneath, sparsely and 

 finely punctulate. Legs and coxse rufo-piceous. Length .16 inch; 4 mm. 



The color of this species may vary from immaturity so that the 

 entire thoracic margin and the sides and apex of the elytra are paler, 

 in this case the abdomen also becomes equally paler so that the uni- 

 formity of color of the body is preserved. 



Occurs everywhere on the Pacific Coast from Oregon to the Penin- 

 sula of California. 



