BihliograpMcal Notices. 403 



Tho Daewinttlidje are represented by Danvinula (1 sp.). 



The Cythekid^ have Metacypris,'^. & R. (1 sp.), Cy/Zigre, Miiller 

 (70 spp.), Limnicy there, Brady (-i spp.), Cytheridea, Bosquet (9 spp.), 

 Eucythere, Brady (1 sp.), Kritlie, B., C, & R. (5 spp.), Loxoconcha, 

 Sars (7 spp.), Xestoleberis, Sars (4 spp.), Cythenira, Sars (i^O spp.), 

 Cytlieropteron, Sars (18 spp.), ByiJiocy there, Sars (8 spp.), Pseudo- 

 cytliere, Sars (1 sp.), Schrochilus, Sars (1 sp.), Cytheridels, Jones 

 (2 spp.), and Cytherois, W. Midler (1 sp.). 



The Pakadoxostomaxid^ comprise Paradoxostoma, rischcr (17 

 spp.), and Maclicerina, nov. (2 spp.). 



Of all the foregoing, 61 are freshwater species and 188 marine. 

 A Table at page 257 gives moreover the distribution of each of these 

 in the different areas concerned, and indicates that 20 of the former 

 and 99 of the latter (marine) occur in the Post-tertiary deposits. 

 The numbers for the Tertiary occurrences will be about 3 for fresh- 

 water and 27 for marine forms, if corrected more nearly by the 

 ' Supplemental Monograph of the Tertiary Entomostraca of England,' 

 by Jones and Sherborn, Palaeont. Soc. 1889. 



The geographical distribution of each sjiecies is shown in the 

 elaborate Table at pp. 250-250. 



The chief emendations of species are : — 



Bairdia formosa, ' Challenger ' Report, p. 52, is B. sxdjcircviata, 



sp. n., pp. 113, 240. 

 Cyihere Stimpsoni, ' ChalL' Rep. p. 85, is 0. runcinata, Baird, p. IGO. 

 — ^- irpex, ibid. p. 107, is C. echinata, Sars, p. 150. 

 pellucida, Monogr. Rec. Brit. Ostr. p. 397, is C. confusa, nov., 



p. 127. 



laticarina, ibid. p. 412, is C. marginata, Norman, p. 142. 



Cytherura lineata, ibid. p. 441, "j 



ajffinis, ibid. p. 443, \ are C. cornuta, Brady, p. 192. 



gibba, ibid. p. 444, J 



cuneata, ibid. p. 442, is C. sella, Sars, p. 194. 



Snrsii, ibid. p. 442, is C. si7nilis, Sars, p. 203. 



Rohertsoni, ibid. p. 444, is C gibha, Midler, p. 190. 



Cytheropteron subcirchiatum, ibid. p. 447, is C. deprcssum, nov., 



p. 218. 



An Appendix (pp. 240-246) treats of the Ostracoda obtained in 

 the French Expeditions of the ' Travailleur ' and * Talisman.' 



Of the fifteen excellent quarto plates (drawn by G. S. Brady and 

 lithographed by George West and Sons) illustrating this goodly 

 Monograph four are devoted to the internal structure and organs of 

 the minute bivalved Crustaceans herein dealt with ; and in the last 

 plate the characteristic limbs and soft parts of six of the genera 

 (^Darwinula, Pontocypris, Loxoconclia, Cytherura, Bythocythere, and 

 Paradoxostoma) are exhibited in place within the valves. In very 

 many of the descriptions and figures throughout this Monograph 

 the sexes and sexual characters are carefully indicated. 



Besides the plates there are woodcut illustrations of several species 

 at pages 88, 118, 241, 242, 244, 245, and 248. 



