VINE: CARBONIFEROUS ENTOMOSTRACA, ETC. 
231 
additions to our knowledge of the genus has been furnished by Pro- 
fessor G. S. Brady in the Transactions of the Linnean (Vol. XXVI.), and 
also of the Zoological Societies (Vol. X.) But to the Palaeontological 
students the publication of a paper on the genus “ Bairdia f by 
Professor T. Rupert Jones and Mr. Kirkby, is by far the most 
important. In this paper the authors give a brief history of the 
genus, a description of all the Carboniferous species found in Great 
Britain, and figures of the same ( Quart. Jour. Geol. Soc. Nov. 1879). 
Altogether there are sixteen species of Bairdia in the Carboniferous 
rocks of Great Britain, two of which are doubtful. 
1. Bairdia curta, McCoy. 
B. curtus , McCoy, 1844, Syn. Char. Carb. Foss., p. 165. 
Cythcre (Bairdia) curta, Jones, 1849, King’s Perm. Foss., p. 61, pi. XVIII., 
fig. 3. 
Bairdia curta, Jones & Kirkby, Quart. Jour. Geol. Soc., Nov., 1879, 
p. 567, pi. XXVIII., figs. 1 to 8. 
The examples of this species found in the shales are generally 
crushed, and correspond more closely with the example from Settle, 
given in pi. XXVIII., fig. 6, of Jones & Kirkby ’s paper (op. cit.) In 
this paper the authors state that there has been, with them, a con- 
siderable oscillation of opinion respecting this type. In their present 
remarks they agree to accept the type, and a pretty full description 
of the species is given. The examples found in the Yorkshire shales 
vary from about - 2 V to of an inch in length. 
Localities : Hurst, Richmond, Yorkshire. Localities given by 
J. & K. Wyebourne, Cumberland; Settle, Yorkshire : Steeraway, 
near Wellington, Salop. 
2. Bairdia subelongata, Jones & Kirkby, (PI. XII., figs. 1, and la.) 
B. subelongata, Jones & Kirkby, Quart. Jour. Geol. Soc., Nov., 1879, 
pi. XXX., figs. 1, 11, and 16. 
B. subcylindinea (Munst.), Jones & Kirkby, 1867, Trans. Geol. Soc. Glas., 
vol. II., p. 221. 
B. subcylindrica, (Munst.), Armstrong & Young’s Cat. of Carb. Foss, of 
Western Scotland. 
Some of the specimens found in the locality given below 
correspond more closely with figs. 10 and 11 of pi. XXX. of the 
paper cited above, except that the posterior extremity is less pointed, 
otherwise the general contour of the specimens is similar to that 
