196 Bulletin American Museum of Natural History [Vol. LIIT 
Lanistes (Meladomus) ovum Peters 
Lanistes ovum Prrers, 1845, in Troschel, Archiv f. Naturgesch., XI, 1, p. 215 
(type locality: Mozambique; according to E. v. Martens, more exactly Tete). E. A. 
Smrru, 1893, Proc. Zool. Soc. London, p. 635. E. v. Martens, 1897, ‘Deutsch Ost 
Afr., IV, Beschalte Weichth.,’ p. 166. 
Me eladomus ovum Peters. Koxpeut, 1911, in Martini and Chemnitz, ‘Syst. Conch. 
Cab., n. F., I, Ampullariide,’ p. 11 (Philippi, 1851, op. cit., Pl. v1, fig. 2 and Pl. 
Wil, et). 
Lake Moero: Kabwiri on the eastern shore (R. Crawshay Coll.). 
Lake Moero off Lukonzolwa (Stappers Coll.); two specimens which 
agree well with the typical form of the species. 
Lanistes (Meladomus) ovum var. major Germain 
Lanistes ovum var. major GERMAIN, 1907, Bull. Mus. Hist. Nat. Paris, p. 427; 
1920, eke dans |’ Afrique Orientale Anglaise, (1912- 1913) par G. Babault, Moll. 
Terr. Fluv.,’ p. 237, figs. 112-1138. 
Bamu Tana in the Stanley Pool (type locality; Roubaud Coll.). 
Lanistes (Meladomus) ovum var. elatior EK. v. Martens 
Lanistes ovum var. elatior E. v. Martens, 1866, Malakoz. Blatter, XIII, p. 99: 
(without description; type locality: Niebuhr River, an affluent of the Nile, in 8° N.); 
1866, in Pfeiffer, ‘ Novit. Conchol.,’ II, p. 291, Pl. uxx, figs. 7 and 8; 1897, ‘Deutsch 
Ost Afr., 1V, Beschalte Weichth.,’ p. 167. 
Dautzenberg and Germain (1914, Rev. Zool. Afric., IV, 1, p. 51) have recorded. 
this form from Lake Kisale at Kikondja; Stanleyville; Lake Kabamba; and swamps 
of Lake Kaziba-ziba near Bukama (all J. Bequaert Coll.). One of the specimens from 
Kikondja, examined by us, belongs to L. procerus langi. It is likely that the other 
specimens were also misindentified and possibly they all belong to procerus langt. 
Lanistes (Meladomus) adansoni Kobelt 
Plate XVII, Figures 5, 6, 7 
Lanistes adansoni Koset, 1911, in Martini and Chemnitz, ‘Syst. Conch. Cab..,. 
n. F., I, Ampullariide,’ p. 18, Pl. xxtv, fig. 6 (type locality: Seaecmbisiae 
Laniates (Meladomus) ovum var. adansoni Kobelt. C. R. Barrerr, 1913, Ann. 
Soc. Zool. Malacol. Belgique, XLVII, (1912), p. 106. 
In brackish water at San Antonio; in fresh-water at Boma (P. Hesse Coll.). 
San Antonio near Pt. Padréo; Banana, on the beach at low tide, 
living specimens together with marine mollusks (Lang and Chapin Coll.). 
Zambi (J. Bequaert Coll.). 
The specimens which we refer to Kobelt’s species differ from his. 
figures by the smaller umbilicus. This shows an unusually wide range of 
variation among the Congo shells before us, as shown in our figures; 
but none have it so open as in typical L. adansoni. The color varies 
from olive to a lighter tint, with dark spire, the lighter examples often. 
