APPENDIX. 123 



the ardent palaeontologist who found it and introduced it to me, who has so carefully 

 studied the fossils of the Coal-measures, and who has contributed so much to the materials 

 of this Monograph. 



Candona (?) Salteriana occurs in the shales of the Pour-foot Coal, Bradford Pit, near 

 Manchester (see page 32). These belong to the Upper Coal-measures, and contain, 

 besides Estheria tenetta, a shell named TJnio Phillipsii by Prof. Williamson, but now 

 regarded as an Antliracomya by Mr. Salter, and remains of Lepidodendron Sternbergii. 



4. Candona (?) Tateana, sp. nov. PL V, fig. 15. 



Length, Jg inch. Breadth, fa inch. 



A small, smooth, oval carapace-valve, somewhat crushed, occurs with Estheria striata, 

 var. Tateana, at Lammerton, Berwickshire (see p. 27). This, for the sake of distinc- 

 tion, though it is but poorly defined, may be denominated Candona (?) Tateana, after the 

 enthusiastic geologist to whom we are indebted for its discovery. 



North American Lower Mcsozoic Cyprida. 



In the numerous notices of the Estherian and Carbonaceous shales of Pennsylvania, 



Virginia, and North Carolina, by the State-geologists and others, to which reference is 



made in the account of Estheria ovata given above (pp. 84 — 99), frequent mention is 



made of the Cyprida found in some of those shales. These have been generally termed 



" Cyprides," and sometimes '" Cytheres" and " Bairdia?" (Emmons). As they have come 



under my observation whilst studying Estheria ovata, I now proceed to describe them 



by the help of specimens kindly submitted to me by the Professors W. B. and H. D. 



Rogers and Mr. Wheatley. Por the same reasons that I assigned the above-described 



Cyprid from the English Coal-measures to the recent genus Candona (with some doubt), 



I here refer the very similar North American Mesozoic forms to the same genus, but with 



less hesitation, as the carapace is better preserved ; and, from their general features and 



habit, I have no doubt that they are either Cypris or Candona, most probably the latter. 



There appear to be two species, one having a smooth, the other a pitted, carapace ; and this 



distinction we may provisionally accept as specific until we find individuals occurring 



partially punctate or otherwise intermediate in character. 



