42G APPENDIX. 



[LeConte. 



p. 331 add the following new genus : 



TRICHISOHIUS n. g. 



This genus is founded upon one species, which agrees with Sphenoph- 

 orus, except in the following characters : 



The inner side of the front and middle coxiB and the middle of the meta- 

 sternum and the first and second ventral segments are clothed with long hair; 

 the thighs beneath, and the tibiiE on the inner side are fringed with long 

 hair ; the genital segment of the (^ projects (as in Ehynchophonts) and is 

 fringed with hair at the tip. The third joint of all the tarsi is slender, not at 

 all dilated or emarginate, glabrous beneath, fringed at the sides, and quite 

 as long as the second joint, which is equal to the first. 



The prothorax is uniformly punctured, without impressions, but with a 

 narrow, smooth dorsal line, and the elytral striae are deep and crenate ; the 

 interspaces are even, and scarcely punctulate. 



1. T. crenatus, n. sp. 



Black, subopaque. Beak scarcely more than half the length of the pro- 

 thorax, slender, slightly curved, finely punctured, with a very fine longi- 

 tudinal impressed line near the base, which terminates in a small, frontal 

 fovea. Prothorax nearly one-half wider than long, narrowed in front of 

 the middle, and rounded on the sides, tubularly constricted near the tip ; 

 base nearly truncate with the edge acute, and sparsely fringed with yellow 

 hairs ; disc rather densely but not coarsely punctured, more coarsely towards 

 the base, each side of the medial line, where it is feebly impressed ; dorsal 

 line narrow, very distinct, slightly elevated near the base. Elytra at base 

 a little wider than the prothorax, basal angles slightly projecting forwards ; 

 striae deep, crenate, interspaces nearly flat, scarcely perceptibly punctulate ; 

 humeri reddish ; pygidium with the hind part strongly, rather densely- 

 punctured ; apex (^) declivous, smooth, concave ; genital plate prominent, 

 smooth. Beneath shining, strongly but not densely punctured ; punctures 

 larger on the metasternum ; side pieces narrow, parallel ; prosternum very 

 narrow between the coxaj. Length 8.8 mm.; .35 inch. 



Colorado ; one specimen, Mr. B. D. Smith. 



p. 365, add as a synonym to 



Tomicus pini ; T. pallipes Sturm, Cat. 1826, p. 76 ; T. dentatus Sturm, 

 ibid. pi. iv, f. 30. Say's name has priority by one year. 



p. 357, add as a synonym to 



Xyloterus bivitatus ; Apate rufitarsisKirhj, Fauna Bor. Am. iv, 193. 



p. 337, after Oononotus add 



HIMATIUM Woll. 



I would refer to this genus, which is fully described by Mr. Wollaston 

 in Trans. Ent. Soc, London, 1868, 461, a small slender reddish-brown 

 opaque Cossonide, thinly clothed with coarse hair. 



It has all the characters given in the description, except that the hairs 

 are not long, and the antennae are not very pilose and the surface not 

 shining. The more important ones may be recapitulated as follows : 



