No. 2313. NEW SPECIES OF EOCENE INSECTS— COCKERELL. 255 



one as being characteristically Cicindelid, and I can not find anything 

 much like it elsewhere, as for instance among the Cerambycidae, 

 where I sought hopefully for some time. In the form of the basal 

 mark there is even a suggestion of certain Heteromera, as for instance 

 Dircaea venusta Champion, from Tasmania; but this apparently has 

 no significance. When we come to compare the existing Cicindelidae, 

 there is nothing very close, but the plan of the pattern is similar. 

 The third mark, on the outer margin, is not characreristic of the 

 Cicindelidae, but may be derived from the condition seen in Cicindela 

 guttata Wiedemann. The basal mark is more or less evident in many 

 species. The matter is of more than ordinary interest, because of 

 the total absence of Cicindelidae in the Florissant (Miocene) shales. 

 In Europe, also, Edm. Reitter found no Cicindelidae in Baltic amber 

 (Oligocene) ; and although W. Horn reported our American TetracJia 

 Carolina Linnaeus in Baltic amber, it must surely have been a fake 

 specimen, of which many are unfortunately extant. Cicindelites 

 armissanti Meunier, from the Oligocene of France, is declared by 

 W. Horn not to be a Cincindelid. 



Family CARABIDAE. 



CARABITES EOCENICUS, new species, 



Plate 36, fig. 1. 



Elytra black, 9 mm. long and 3 broad, with eight fine but very 

 distinct strife, not counting the marginal one; the abbreviated inner 

 basal stria is represented only by a faint groove running parallel with 

 and extremely near to the margin of the rather large scutellum, the 

 sides of which are about 1 mm. long. Striae not punctured, nor are 

 there any surface or submarginal punctures. About the middle of 

 the elytra 1 mm. measured transversely, includes three interspaces. 

 There is a feeble short stria basally between the first and second. 



Type.— U.S.G.S. 627. White River, Colorado (Scudder collection). 

 Differs from Carahites exanimus Scudder, by having one stria less, 

 and no concavity of the outer margin toward the apex. 



Holotijfe.—CaL No. 66577, U.S.N.M. 



Compared with Pterostichus, this shows little difference except the 

 absence of the submarginal punctures. In Pterosticlius the first 

 (innermost) stria is deplaced sideways near the base, and is sepa- 

 rated by a ridge from the abbreviated inner basal stria. In the fossil 

 the first stria is continuous in a straight line until it passes into the 

 groove along the scutellar margin, described above. A short stria 

 between the first and second evidently represents the basal end of 

 the first as seen in Pterostichus; and the inner basal stria of Pteros- 

 ticliiis is homologous with the basal end of the first stria in the fossil. 

 I find that in the living Pterostichus menetriesii Motschulsky, from 

 Yuma, the first stria is practically continuous with the inner basal, 



