200 GEO. H. HORN, M. D. 



C Villosns Grav., Micr. p. 160; Erich. Staph, p. 349; Mann. Bull. Mosc. 

 184.3, ii, p. 228; bicinctus Mann. loc. cit. p. 229; fasciatus Lap. Etudes, p. 111. — 

 It seems to me necessary to unite the species above cited under one name. 

 The only differences which exist are found in the vestiture of the under side 

 of the body, some of the specimens having the abdominal segments 2— .3 clothed 

 ■with grey pubescence while others have 2 — ,4i so clothed. This proves however 

 to have no value as intermediate specimens occur. These two forms have 

 moreover no geographical limitations, both occurring associated everywhere 

 in our fauna. Erichson in his description says that the first three segments 

 are cinereo-toraentose, this is not the case in any specimens I have seen, the 

 seconH, third and the fourth partly are so clothed. The metasternum at sides 

 may have either black or cinereous pubescence. Length varies from .48 — .90 

 inch ; 12 — 23 mm. 



Occurs from Alaska southward over our entire territory, and 

 extends probably into Mexico. 



THINOPINUS Lee. 



The fourth joint of the maxillary palpi is very little if any shorter 

 than the preceding. The elytra are short imbricated at the suture, 

 the wings absent. The anterior tibiae are triangular, the outer apical 

 angle prolonged forward. The middle and posterior tibiae are gradu- 

 ally thicker toward the tip, the outer side muricate but without the 

 spines as in the allied genera; the spurs are long and slender. The 

 antennae are short, not passing the hind angles of the head. The 

 lateral lines of the thorax remain distinct but under the anterior 

 angle approximate very closely. 



One species occurs on the Pacific sea-shore from Alaska to San 

 Diego. 



T. pictus Lee, Ann. Lye. v, p. 216; Pacific E. R. Rep. 1857, App. 1, p. 35, 

 pi. 1, 'fig. 12; variegatus Motsch. Etudes, 1852, p. 78; Mann. Bull. Mosc. 1853, 

 iii, p. 188. — Color pale yellowish testaceous, variegated above with piceous spots. 

 Head broadly triangular, hind angles obtusely prominent, surface glabrous, 

 shining, neck with two piceous spots. Thorax broader than long, narrowed at 

 base, sides in front arcuate, posteriorly sinuate, margin at sides very narrowly, 

 at base more broadly reflexed, surface smooth shining, glabrous with a piceous 

 oval ring on each side, varying from this to immaculate. Elytra short, each as 

 wide as long, slightly opaque, obsoletely punctate, sparsely pubescent, with 

 a piceous line forming an oval ring varying to immaculate. Abdomen above 

 punctulate, more densely at the sides, clothed with very fine and short pubes- 

 cence, with a double row of black spots of variable size, sometimes absent. 

 Body beneath testaceous, abdomen moderately densely punctured, sparsely 

 pubescent. Length .56 — .74 inch; 14 — 19 mm. 



The maculation of the surface is very variable, in one specimen 

 before me piceous is the prevailing color above but I have not seen 

 any entirely testaceous. The males have the abdomen more oval than 

 the female and the sixth ventral rather deeply emarginate. 



