PLEISTOCENE BEETLES OF FORT EIVEE. 745 



Family CHRYSOMELIDiE. 



Tribe Donaciini. 



Donacia eloii(/afula. 



PL XXIII, %. 5. 



A sing'le nearly perfect left elytron a])pears to rejiresent a species not 

 hitherto known, but apparently most nearly allied to 1). Uf/inftdii Sord., from 

 the Italian Pleistocene. It is somewhat more than three times as long- as 

 broad, tapering- from the middle to the nontruneated apex, before which the 

 outer margin is more strongly l)ut very regularly curved, with no sudden 

 change of direction. Besides the marginal groove, there are in the basal 

 half ten parallel strisB with delicate longitudinal punctures, but in passing 

 from the base to the apex the two middle unite just before the middle t( > 

 form a single stria, and just beyond the middle they are joined hx the 

 fourth from the inner margin. No others unite until shortly before tlie a])ex, 

 when the third and fourth from the inner margin unite and terminate, and 

 halfway from here to the apex all but the outer ones ' approach and termi- 

 nate, the outer ones acting similarly at the \evy apex. The surface is shining 

 piceous. 



Length of the fragment, T.'i.'j'"'"; probable length of elytron, T.G'"™; 

 breadth in middle, 2.2"°™. 



Tribe Clythrini. 



Saxinis regularis. 



PI. XXIII, figs. 6, 7. 



The most complete specimen found in these beds is a chrysomelid, 

 with the last abdominal segment exposed and callous, which with its form 

 indicates one of the Clythrini. It is slightly larger than and of a similar 

 form with S. saiicia Lee, though it differs decidedly from it in the details of 

 the form and structure of the elytra. The pro thorax is crushed and mis- 

 shapen, so that nothing more can be said of it than that it differs from that 

 of Saxinis in its lesser breadth, being- decidedly narrower at base than the 

 elytra, and on this account it is exceedingly doubtful if it should be placed 



