Messrs. Jones and Kirkby on Carboniferous Entomostraca. 41 



species on the hand-specimens bearing their names on the 

 labels : they may perhaps have fallen out ^. Some of the 

 figures referred to represent, we are sure, only modified condi- 

 tions of carapaces, either partially imbedded in the matrix or 

 altered by pressure ; some are for certain badly drawn ; and in 

 many cases the edge-views of the carapaces must, we think, have 

 been constructed from the lateral profiles of imbedded valves, 

 and are therefore raiely of much valuef. 



The figures in Prof. M'Coy's plate 23 are not drawn on a 

 true scale ; so that some specimens \ line long have larger figures 

 than some one line long. 



Having carefully examined the several labelled hand-specimens 

 of shale and limestone lent to us by Sir R. Griffith, we propose 

 to make some remarks on the Entomostraca that we have met 

 with in them ; and at the same time we shall offer our opinion 

 on such of Professor McCoy's species as are figured in pi. 23 of 

 the * Synops. Charact. M. Liraest. Foss. Ireland,' but have not 

 reached us, or are not now to be seen on the hand-specimens. 



1. " Entomoconchus Scouleri. Lower Carboniferous Lime- 

 stone; Little Island, Cork." Synops. Carb. Foss., Ireland, 

 p. 164, pi. 23. fig. 4. Griffith, List of Localities (Journ. Geol. 

 Soc. Dublin, vol. ix.), p. 68. A cast, in grey crystalline fos- 

 siliferous limestone. 



1*. Another cast, in similar limestone j Millicent, Clane, co. 

 Kildare. 



l*"^. Another specimen (labelled " E. Scouleri. Upper Car- 

 boniferous Limestone; Black Lion, Enniskillen, co. Leitrim," 

 Localities, p. 80) is a dark-coloured crystalline shelly lime-* 

 stone with a Cyclus. 



2. " Daphniaprinueva." Synops. p. 164, pi. 23. fig. 5. Stated 

 to be 1^^ long, and | line deep, not very uncommon in some 

 localities, and possibly to be the same as Hibbert's Daphnoidia. 

 The specimen was not sent to us, nor is it mentioned in the 

 List of Localities, and has therefore probably been mislaid. It 

 certainly is a Cypridina as far as the appearance of the valve is 

 concerned, whatever Dr. Hibbert's specimens may have been 

 (see above, p. 34). 



3. " Bairdia curtus. Arenaceous shale ; Granard, co. Long- 



* In the 'Dublin Quarterly Journal of Science,' No. XIX. July 1865, 

 Mr. John Kelly explains that in 1853 Sir R. Griffith's collection, compri- 

 sing these specimens, was removed from his house to the Great Exhibition 

 in JDubUn, and that many of the specimens of shale crumbled away. 

 Hence, probably, the loss of several specimens. 



t In 1847 M. J. Bosquet, in his " Descript. Entom. Foss. Maestricht," 

 p. 4, note, offered some criticisms on M'Coy's species, but not sufficiently 

 well founded to be of use. 



