190 H. C. FALL. 



New Hampshire; Vermont; Massachusetts; New York; Penn- 

 sylvania ; Virginia ; Florida (Enterprise) ; Texas (Columbia) ; 

 Michigan; Iowa; Indian Territory (Atoka). 



2. T. |miim"I;iI us Lee. — The description of sericeus applies almost perfectly 

 to this species, which is only distinguished by its longer, more erect pubescence. 

 The punctures of the elytral strife are possibly a trifle smaller, but the difference 

 is scarcely obvious. Length 4.5-6.5 mm. 



Colorado (Glen wood Springs, Fenyes) ; New Mexico (Santa Fe, 

 type, and Silver City) ; Arizona (Pinal and Chiracahua Mountains) ; 

 California, numerous localities from Sylvania to San Diego. 



It may be here remarked that T. carpini, the single European 

 species upon which the genus was based, looks much like our spe- 

 cies, but the antennae are more uniformly serrate and the elytral 

 punctures finer. The ventral punctuation, while of the same type, 

 is sparser and less deeply impressed. 



COL.POSTER1VUS new genus. 



Elongate, subcylindrical. Terminal joint of both labial and 

 maxillary palpi very narrow and acuminate, not wider than the 

 preceding joints. Antennae 11 -jointed, serrate, gradually narrower 

 externally, the outer joints not elongated. Prothorax as wide as 

 the elytra ; the latter confusedly punctate. Front and middle coxse 

 distant; prosternum not carinate; metasternum moderately deeply 

 but not abruptly excavated in front, the median line not sulcate 

 behind. Posterior coxal plates not distinctly angulate. Ventral 

 segments free; first, third and fourth subequal ; second nearly as 

 long as the third and fourth together; fifth a little shorter than the 

 second ; first suture broadly posteriorly arcuate at middle. Tarsi 

 slender; the first joint of hind tarsus nearly four times as long as 

 wide ; second half the length of the first and fully three fourths 

 longer than wide ; third and fourth gradually shorter, the latter 

 widest and deeply emarginate; fifth slender, twice as long as wide 



The single Pacific Coast species, for which this genus is created, 

 was referred by Horn to Trypopitys on the strength of the serrate 

 antennas and excavate metasternum. As Horn remarks, the insect 

 looks far more like an Oligomerus, but his further statement that 

 there are no characters other than the elytral sculpture and the 

 more explanate sides of the prothorax to separate it from Trypopitys 

 is quite unwarranted, the palpal, ventral and tarsal formations being 



