1927] Pilsbry-Bequaert, The Aquatic Mollusks of the Belgian Congo 345 
Corbicula consobrina Cailliaud. Patuary, 1904, Bull. Inst. Egyptien, (4) IV, 
p. 8; 1909, Mém. Inst. Egyptien, VI, p. 71, fig. 2 (with C. laurenti, C. nilotica, C. 
bithydea, C. eucistera, and C. chlora as synonyms; all Ms. names of Bourguignat). 
Corbicula cameroni “ Bourguignat’”’ GERMAIN, 1906, Bull. Mus. Hist. Nat. Paris, 
p. 583, fig. 18d (type locality: Kingani River at Bagamoyo). 
Corbicula degouseti BouRGUIGNAT, 1889, ‘Moll. Afr. Equator.,’ p. 190 (without 
description). GERMAIN, 1906, Bull. Mus. Hist. Nat. Paris, p. 583, fig. 17d (on p. 582) 
(type locality: Kingani River at Bagamoyo). 
Corbicula jouberts “Bourguignat” GERMAIN, 1907, Bull. Mus. Hist. Nat. Paris, 
p. 582, fig. 18c (on p. 583). 
Corbicula kynganica “ Bourguignat”’ GreRMAIN, 1906, Bull. Mus. Hist. Nat. Paris, 
p. 584, fig. 18a (on p. 583) (type locality: Kingani River at eS etnoy 0). 
Lake Tanganyika: Kibanga (type locality of C. jouberti). 
We have accepted Germain’s synonymy of C. fluminalis, except in the case of 
C. egyptiaca, C. lavigeriana, and C. subtruncatula, which Pallary claims to be distinct. 
Whether the Tanganyika specimens called C. jowbertt were true C. fluminalis or C. 
tanganyicensis Crosse we do not venture to decide. We have before us specimens of 
true C. fluminalis from the Nile in 10° N. (Pilette Coll.), which are quite distinct from 
C. tanganyicensis. 
Corbicula foat J. Mabille 
Corbicula foat J. MaBILLE, 1901, Bull. Soc. Philomath. Paris, (9) ITI, 2, p. 58. 
GERMAIN, 1905, Bull. Mus. Hist. Nat. Paris, p. 261; 1906, op. cat., p. 585; 1908, ‘Rés. 
Scientif. Voy. Afrique Fo,’ p. 696, figs. 52 and 53 (on p. 697). 
Lake Tanganyika: (without more definite type locality; Foa Coll.). 
Germain (1906, p. 585) states that this differs clearly from C. astar- 
tina by the serrulate lateral teeth; but von Martens has pointed out 
that his original ascription of smooth lateral teeth to C. astartina was 
an error, as crenulation may be distinctly seen. E. A. Smith (1904, Proc. 
Malacol. Soc. London, VI, 2, p. 100) considered C. foaz to be probably 
a variety of C. radiata. 
SOLEILLETIA Bourguignat — 
Soleilletia BourGuIGNAT, 1885, ‘Moll. Choa,’ p. 32. Type by present designation: 
Soleilletia abbadiana Bourguignat. 
To judge from Bourguignat’s account and figures, this appears to 
be one of the Cyrenide or Donacide, somewhat resembling Egeria, from 
which it differs by the simple pallial line. The armature is described by 
Bourguignat as follows: “Sur la valve droite, 1 cardinale centrale et 2 
renflements allongés; sur la gauche, 2 cardinales seulement, sans ren- 
flements. A l’endroit ot, chez les Pisidies, les Sphéries et les Corbicules, 
s’élévent les dents latérales, il n’y a, chez les Soleilleties, que le prolonge- 
ment filiforme des renflements (valve dextre) ou renfoncements (valve 
sénestre) cardinaux.” The shell is said to be small (6 to 9 mm. long), 
fragile and thin, with sharp and rather curved beaks. 
Two species have been described: 
