FOSSIL COLEOPTEEA 



23 



larlv upon the abdomen, ■which is barely visibly punctate. Legs lacking, 

 except one fore femur -which is of moderate length and stoutness. Length, 

 from front margin of prothorax to elytral tip, 2.65 mm.; of rostrum, about 

 .80 mm. 



This is referred to Trypanorliynclius since it seems to go better 

 in that genus than in any of the others described by Dr. Scudder. 

 It is smaller than any of the species placed there by him, but 

 would come nearest T. sedatus, though easily distinguished by 

 the corrugate head of the specimen in hand. It looks like the 

 figure of Apion exanimah from these shales, but from the de- 

 scription I judge the elytra of that species to be impunctate. 



T. EXiLis n. sp. (Plate YIL Fig. 2.) Form rather slender, back not 

 strongly arched. Head without noticeable striations, eve subelliptical, beak 

 a little longer than the prothorax, nearly straight, antennag not visible. 

 Prothorax short and, as preserved, higher than long, the surface with strong, 

 large, irregular punctures, much more CArident on the sides than on the disk 

 and becoming confluent laterally so as to form rugae. Elytra not striate 

 but -with rows of moderately deep, well separated, rounded punctures, smaller 

 than those of the prothorax. Legs rather short. Length, 2.60 mm. 



Resembles T. minutissimus C[uite closely but that species has 

 the prothorax more regularly, closely and finely punctured, the 

 elytral punctuation is also closer and better defined. The fan- 

 shaped striate area, so well shown in T. jninutissimus, is absent 

 from the head of the present species. 



T. OBLiQta'S n. sp. (Plate A^IL Fig. 1.) Form, in profile, rather elongate, 

 back regularly but not strongly arched. Head small, higher than long, the 

 sides, behind the eyes, strongly and regularly transversely striate, eye el- 

 liptical, oblique, the long axis nearly parallel to the forehead which is very 

 finely punctulate, occiput more strongly punctured and with some trace of 

 rugosity. Beak well defined at base, arising suddenly from the head, long, 

 almost straight, strongly striate, carinate and punctured. Antennje in- 

 serted at about basal third, straight, proximal and medial joints slender, 

 elongate, club three- jointed, moderately broad, the joints slightly obscured 

 but apparently subequal in length. Prothorax distinctly punctured, the 

 punctures mostly well separated but tending to form transverse rugae, the 

 fore part of the disk a little smoother. Elytra distinctly punctate at base, 

 the remainder of the surface sculpture obscure or obliterated except that 

 faint striae are indicated as shown in the figure. Legs moderately long, 

 tarsi obscure. Abdominal segments subequal. Length, excluding rostrum, 

 6.10 mm.; of beak, 3.30 mm.; of antennee, 1.90 mm. 



This fine beetle, about the size of RJujnchites suhterraneus, 

 differs from that species and from the recent members of the 



