1926] Schmitt, Crustaceans Collected by the Congo Expedition 11 
in showing this groove as reaching themarginofthecarapace. The anten- 
nular flagella are relatively the same length in both sexes. Basal spines 
are present on both of the first two pairs of legs; Balss says (loc. cit., 
1914) on the first pair only. 
The rostrum of the male, though having about the same appearance, 
shape, and number of teeth as in the female, is quite a bit shorter, attain- 
ing but the middle of the last segment of the antennular peduncle; above 
it has nine teeth in addition to the epigastric, as in the type. The last 
dorsal tooth is about over the middle of the second segment of the anten- 
nular peduncle, thus leaving about the distal fourth unarmed. In the 
largest female almost the distal third of the rostrum is without teeth, 
and, as in Balss’s figure 3, the last tooth about coincides with the end 
of the antennular peduncle. In the twelve females before me the dorsal 
teeth, counting the epigastric, vary from ten to twelve in number; one 
had a broken rostrum, six had ten dorsal teeth including the epigastric, 
four had eleven, and one twelve. 
Tribe CARIDEA 
Atyide 
Caripina Milne Edwards 
Caridina H. Minne Epwarps, 1837, ‘Hist. Nat. Crust.,’ II, p. 362. 
Caridina togoensis Hilgendorf 
Text Figures 1 to 62 
Carga togoensis HinGENDORF, 1898, Sitzb. Gesell. Naturf. Freunde Berlin, 
p. 156. Ratugun, 1900, Proc. U. S. Nat Mus., XXII, p. 314. 
Caridina togoénsis var. stuhlmanni ene 1898, ‘Deutsch-Ost-Afrika,’ 
IV, No. 7, p. 35. 
Caridina togoensis var. decorset Bouvier, 1904, Bull. Mus. Hist. Nat., Paris, X, 
p. 131; 1905, Bull. Sci. France et Belgique, XX XIX, p. 81, fig. 5. Bass, 1914, 
‘Ergeb. Zweiten Deutschen Zentral-Afrika-Exped. 1910-1911,’ I, Zool., p. 97. 
Caridina togoensis var. breviatus Lunz, 1910, ‘Wissen. Ergeb. Deutschen Zentral- 
Afrika-Exped. 1907-1908,’ III, Zool., I, p. 131. 
Previously recorded from Adeli near Bismarckburg, Togoland (type locality, 
Hilgendorf); Bangoran River,! Gribingi-Tchad territory, and river near Mpoko 
(=Kukuru River), French Congo (Bouvier, var. decorsei); Fort Crampel (Gribingi, 
Balss, var. decorsei); Libenge, Upper Ubangi (B alss, var. decorset); near Mawambi in 
an affluent of the Ituri River, in a pool of the same river near Avakubi (Lenz, var. 
decorset) ; brook at Undussuma (Hilgendorf, var. stuhlmanni); and in a brook in 
the virgin forest (“‘Urwaldbiche’’) northwest of Beni (Lenz, var. breviatus). 
a cece 
!The Gribingi, Kukuru, and Bangoran are headwaters of the Shari River. 
