242 Journal of the Asiatic Society of Bengal. [June, 1918. 
species, whereas the crab has a more restricted dis- 
einen and would seem to indicate an Egyptian, thoug 
not an Ethiopian, affinity. It is noteworthy, however, that, 
for some reason very difficult to explain, it seems to be a gene- 
ral rule that the distribution of freshwater crabs is more 
restricted than that of freshwater prawns; T'yphlocaris is of 
course an exception to this rule, as it also is to others 
Family ATYIDAE, 
Atyaephyra desmaresti (Millet). 
1832. Hippolyte desmaresiii, Millet, Ann. Sci. nat., XXV, p. 
t= o 
1837. ere desmarestii, H. Milne-Edwards, Hist. nat. 
Crust., II, p. 376. 
1843, Carina desmaresi Joly, Ann. Sci. nat., Zool., (2), XIX, 
Pp. 
1849. “Caridina Jemisninie Lucas, Hist. nat. Anim. Explor. 
Igérie, Zool., I, p. 40, pl. iv, fig. 
1863. = Oaetaban desmarestii. Heller, See siidlich. Europ., p- 
238, pl. viii, ‘ 
1366. Atyaephyra rosiana, Co Desc. esp. nov. 
rust. Arachn , Lisboa, p. 6, pl. 1 
1868. Caridina iE rbenlc v. Martens, ah, f. Naturgesch., 
50. 
> p- 
1879. Atyaephyra rosiana, Kingsley, Proc. Acad. Sci. Philadel- 
. 415. 
1880, Donia desmaresti, Bose. Stiid. over Decap. Slaegtsk., 
p. 60, pl. i, fig. 26; pl. ii, fig. 47; iii, figs. 82, 106; pl. v, 
Ss. 151, 163. 
1880. Caridina desmarestii, Stossich, Boll. Soc. Adriat. Sci. 
nat., Trieste, p. 211. 
1888, Caridina desmarestii, Pelseneer, Bull. Mus. Belg., IV, 
1390" S Hakicntiding desmarestii, Ortmann, Zool. Jahrb., Syst., 
> Pp. 
1891. Hemicaridina desmarestii, Thallwitz, Abbandl. Ber. Zool. 
resden, No. 3, p. 27. 
1892. maces desmarestit, Barrois, Rév. biol. Nord 
rance, V, p. 126, figs. 1-3, . 
1895. Atyaephyra hasty Ortmann, Proc. Acad. Sci. 
Philadelphia for 1894, p. 401 
1896. Atyaephyra desmaresti , Picquenard, Bull. Soc. Sci. et 
Medic. de l’Quest, Rennes, p. 45. 
1903. Aigaephara desmaresti, Bouvier, Bull. Soc. Ent. France, 
p. 2 
1905. dig we hae Bouvier, Bull. Sci. France et 
Belg., XXXIX, p 
