68 GEO. H. HORN, M. D. 



little in width, and in some specimens the lateral vitta does not join 

 the sutural at apex. 



An examination of the elytral sculpture shows that it approaches 

 very closely the dense and fine form seen in tomeidosa, differing from 

 the coarser form of virgata and brevicollis. The markings, however, 

 more nearly resemble those of the last two species, but in both there 

 is more black than yellow, while the reverse is the case in canadensis. 

 The sexual characters are more nearly those of tomentosa, as in the 

 last two-named species the claws do not greatly diflfer in the. sexes. 



This species is probably the most widely distributed of any in our 

 fauna. Specimens are known to me from Hudson's Bay region, 

 Canada, New Jersey coast, Kansas, Nebraska, Colorado, Utah and 

 California. 



T. geiiiiiiata n. sp. — Oblong, slightly broader behind. Antennse entirely 

 piceous when fully mature, the fifth joint a little longer than the third. Head, 

 excepting the front piceous ; occiput coarsely and closely punctate. Thorax 

 much less than twice as wide as long, slightly narrowed in front, angles not 

 prominent, sides arcuate, disc with very vague, oblique depression each side, 

 surface subopaque, scabrous and coarsely punctate, color dull yellow, with the 

 three discal spots of variable size; scutellum piceous; elytra in great part dull 

 black, margin from humerus to apex yellow, disc on each side with a dull yellow 

 vitta extending three-fourths to apex, itself longitudinally divided by a narrow 

 black line, surface densely finely punctured and extremely finely pubescent; 

 epipleurae pale. Body beneath, except prosternum, piceous. Legs in great part 

 piceous, except the underside of the femora. Length .20 — .28 inch. ; 5 — 7 mm. 



Hale. — Last ventral broadly, but feebly emarginate; claws cleft at tip, the 

 inner portion slightly divergent and shorter. 



Female. — Last ventral entire ; claws more deeply cleft, the inner portion more 

 divergent and shorter than in the male. 



In order to properly appreciate this species it is necessary first to 

 see a fully colored specimen. Even then it would probably be asso- 

 ciated with maritima or morosa, from its form and appearance. 

 Among the species without any metallic lustre this one is known by 

 the greater part of the head being piceous and coarsely punctate, the 

 thorax feebly impressed and rugose, the elytra opaque, with the feebly 

 marked yellow vitta divided by a black line, and by the underside 

 of the body almost entirely piceous. 



Two specimens before me are fully mature and marked as above 

 described, one is entirely testaceous and probably immature. A 

 fourth specimen has the entire dark fuscous, and apparently only the 

 border yellow, but a careful inspection shows the geminate yellow 

 vitta a little paler than the rest of the surface. 



Occurs at San Diego, Cal., and Arizona. 



