FOSSIL COLEOPTERA 27 



tapering and not truncate at tip, marked with moderate sized punctures in 

 striae, the striae showing evidences of extensive confluence at their tips, as 

 in recent Donaciae. Scutellar stria strong and moderately long. The strial 

 punctures are finer towards the elytral apices, distinctly but not strongly 

 elongate and separated in each stria by spaces about equal to their own 

 long diameters. In some parts they are a little closer together. Legs of 

 moderate length, the fore and hind femora (the middle ones being wanting) 

 moderately swollen but without signs of dentation, front tarsus not pal- 

 mate. Length of fragment, from apex of prothorax to that of the elytra 

 8.00 mm.; of elytron, 6.30 mm. 



Station number 1-4. One paired specimen, collected by S. A. Eohwer. 

 The type is in the American ^luseum of Natural History. 



My idea of this Donacia is that it was of the general type of 

 the recent D. emarginata, that is to say a form of moderate 

 specialization as compared with the broad, flat, long-legged 

 proxima on one side and the convex, short-legged rufa on the 

 other. I think there can be no doubt as to the correctness of the 

 generic reference. The front femur, described above, shows on 

 only one stone and is not figured in the drawing which is made 

 from the other slab. 



Crioceridea n. gen. 



This name is proposed for a Chrysomelid of doubtful affinities, appar- 

 ently related in build to Crioceris, but differing in several points, especially 

 in the finer sculpture and in the longer second antennal joint. It differs 

 from Lema in the same features and also in having a distinct scutellar 

 stria, sharing this last character with Crioceris. 



C. DUBIA n. sp. (Plate Y, Figs. 7, 8.) Form hardly elongate. Head a 

 little shorter than the prothorax and without visible sculpture. Eye large, 

 circular. Antennae rather elongate, the two of apparently different thick- 

 ness, probably on account of one showing on the flat, the other on the 

 edge. In the wider one the breadth is about as in the recent Crioceris 

 asparagi (or a little less) the joints beyond the middle are shortened in 

 the same way. Prothorax distinctly broader than long, not sculptured. 

 Elytra a little more than three times the length of the prothoracic median 

 line, conjointly much wider than the prothorax, apices rounded, sculpture 

 of lines of fine, well-separated punctures which fade out posteriorly except 

 at the sides. The courses of some of these lines are indicated on the figure, 

 but as the markings are not preserved over the whole disk the drawing 

 shows them in fragmentary condition. Legs wanting, except one belonging 

 to the front or middle pair which is rather slender. Length to elytral tip, 

 5.50 mm. 



