The Tanganyika problem; an account of the researches undertaken concerning the existence of marine animals in Central Africa . ux, the onlyspecies known from North America, is somewhat similar to the present form, but,so far as can be judged from the more or less defective figures and descriptions ofRoux (Ann. Sc. Nat. xxviii. 1833, p. 73, pi. vii. f. 2) and Klunzinger ( wiss. Zool. xvi. 1866, p. 357, pi. xx.), appears to present distinctive these authors figure the rostrum with a very convex upper edge. Klunzinger gives the number of serrations as •*, Roux figures —
The Tanganyika problem; an account of the researches undertaken concerning the existence of marine animals in Central Africa . ux, the onlyspecies known from North America, is somewhat similar to the present form, but,so far as can be judged from the more or less defective figures and descriptions ofRoux (Ann. Sc. Nat. xxviii. 1833, p. 73, pi. vii. f. 2) and Klunzinger ( wiss. Zool. xvi. 1866, p. 357, pi. xx.), appears to present distinctive these authors figure the rostrum with a very convex upper edge. Klunzinger gives the number of serrations as •*, Roux figures — . According to the figures of both authors, however, not more than one tooth appears to be behind the show the carpus of the 2nd peraeopod to be distinctly shorter than the merus,and much more than half the length of the hand. Klunzingers figure of the chelashows it to be more slender, with the palm less inflated and the fingers longer thanin our species. Neither of the species can be depended on as throwing any light on the generalquestion of the origin of the Tanganyika fauna. The genus Palamon contains. MP* [!fp ?: Fig. 4.—Limnocaridina Tanganyika and Palcemon moorei. 10, First perneo-pod, outer side, icw, Inner side. II, Second peneopod. 12, Dactylus offourth perreopod. 13, Fifth peneopod. 13^, Dactylus of same. 14, Firstpleopod of female. 15, First pleopod of male. 16, Second pleopod offemale. 17, Second pleopod of male. 17a, Appendix masculina and ap-pendix inferna. 18, Tail fan. 19, Apex of telson. 20, Palcemon 21, First perteopod (more highly magnified). 22, Second pera;o-pod. 23, Fourth peneopod. 24, Apex of telson. (After Caiman.) 294 THE TANGANYIKA PROBLEM. about 50 species, of which only two are said to be marine. It is closely allied toLeander, in which, conversely, the marine species greatly predominate, while bothgenera have numerous allies among the littoral fauna. Limnocaridina belongs to the Atyidce, a circumtropical family o
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