258 Bulletin American Musewm of Natural History [Vol. LIII 
Melanoides anomala (Dautzenberg and Germain) 
Plate X XI, Figures 8-12 
Melania tuberculata var. anomala DAUTZENBERG AND GERMAIN, 1914, Rev. Zool. 
Afric., IV, 1, p. 62, Pl. 111, figs. 3, 4, 7, 8, and Pl. rv, fig. 8. 
Originally described from the Luvua River between Ankoro and Kiambi; 
Kabanza on the Lovoi River (near Kikondja);and Bukama, inthe Lualaba River (J ‘ 
Bequaert Coll.). No type locality was designated, but Kabanza, on the Lovoi River, 
is here selected as such. 
Sankuru River (Ac. Nat. Sci. Philadelphia and U. 8. Nat. Mus.; 
collector unknown). Near the source of the Kimilolo River (an affluent 
of the Lubumbashi); Kisanga River (an affluent of the Kafubo); 
Panda River, near Likasi (Michael Bequaert Coll.). Kidada near Kitobola 
(H. Schouteden Coll.). 
It appears that several forms, probably local races, were ere lidied i in 
the illustrations which originally defined M. t. var. anomala. The speci- 
men represented in Plate 111, fig.4, of Dautzenberg and Germain’s work, 
is here selected as the type. It is from Kabanza on the Lovoi River (J. 
Bequaert Coll., 22, x, 1911). A new figure of this specimen, now at the 
Congo Museum, Tervueren, is given in our Pl. XXI, fig. 8. 
The upper half of the last whorl is rather coarsely ribbed (about 13 
ribs on the last whorl); these ribs are interrupted by an impression which © 
cuts off a subsutural series of tubercles; there is also a weakly impressed 
spiral line midway of the ribs, and another at the periphery. The ribs 
then terminate, the base showing three rather strong spiral cords. The 
pale olive-buff color is varied by a few scattered reddish-brown spots on 
the last whorl. 
Length, 14.0 mm.; diameter, 5.0 mm.; 6 whorls remaining. 
In a series (Pl. X XI, figs. 9, 10, 11) from near the sources of the 
Kimilolo River, an affluent of the Lubumbashi River, the earlier whorls 
are similar to typical anomala, being costate and more or less granose, 
but on the last whorl the ribs are usually obsolete. 
Length, 22.7 mm.; diameter, 8.0 mm.; 6 whorls remaining. 
ae: tae es So as PAE 
A series from the Kisanga River, an affluent of the Kafubo, has 
similar shells but smaller, the largest of twenty being 15.5 mm. long, 
6.0 mm. wide, with seven whorls (Pl. X-XI, fig. 12). 
. A few from the Panda River are about like those of the Kimilolo.- 
Melanoides anomala bukamana, new subspecies 
Plate XXI, Figure 13 
The strongly subcylindric form represented by Dautzenbtrg and Germain’s 
_ Pl. 111, figs. 5, 6, and Pl. rv, figs. 7, 9, 10, appears to be a separable race of anomala 
