358 PROCEEDINGS OF THE MALACOLOGICAL SOCIETY. 



between is uniformly straw-j-ellow. Tlie columella is usually dull 

 purplish. Dr. le Roi obtained a maguificent set of twenty-seven 

 examples at Thombe, Bahr el Djebel (March 20, 1910), and a single 

 specimen at (iemesa, Bahr el Djebel (March 18, 1910). While 

 G. Rolilf's specimen, according to Kobelt, measures only 38 mm., 

 0. Neumann's specimens had a length of 60 to 65 ram. (Stuhlmaiin's 

 examples were young). Dr. le Hoi's specimens vary from 38 to 

 50 mm. ; they, therefore, neai'ly approach Kohlf's shell. 



LiMICOLAKIA CONNECTENS, V. Mart. 



This species was described by E. von Martens from a specimen 

 obtained by 0. Neumann (Nachrichtsblatt Deutsch. Malakozool. 

 Gesell., 1895, p. 183; Martens, Beschalte Weichtiere Deutsch - Ost - 

 Afrikas, Berlin, 1897, p. 112, pi. v, figs. 5-6). The following 

 localities are enumerated by von Martens : Mhugu, on the north-east 

 shore of Victoria Nyauza (0. Neumann, February, 1894), Karevia, 

 western foot of llunssoro (Stuhlmann, February 16, 1891), and 

 Bundeko, 0° 55' (Stuhlmann, July 4, 1891). Eighty specimens 

 of this rare Limicolaria were taken by Dr. le Roi at Thombe, 

 Bahr el Djebel (March 20, 1910), and two specimens at the Bahr 

 el Ghazal (February 27, 1910). They fully agree with E. von 

 Martens' description and figures, and are easily distinguished from 

 L. rectistrigataj E. A. Smith, by their browner colour and stronger 

 granulation. In many specimens the stripes of the la'*! whorl possess 

 a forwardly pointed emargination in the line which continues the 

 suture. E. von Martens has already mentioned this. 



Limicolaria Leroii, n.sp. 



Testa perforata, solida, oblongo-turrita, superne caeruleo-albida, 

 infra flavo-albiila, fusco-nigrescens flammulata ; apex albus. 

 Anfractus 8, plani, regulariter accrescentes, sutura plana separati, 

 sub sutura tenue plicati, in anfractu ultimo et prsecedeutibus 

 linea impressa marginata ; ultimus paulum convexiusculus, fere 

 f longitudinis totius oequans. Apertura cseruleo-albida, pictura 

 translucente, angusta, verticalis ; peristoma simplex, acutum ; 

 columella caerulea ; margo columellaris reflexus, cum margine basali 

 anguliim formans. Long. 37*5, diam. 16 mm.; apertura, alt. 16, 

 lat. 7 ram. 



i?rtJ.— Bahr el Ghazal (Otto le Hoi, February 23, 1910; Museum 

 Al. Koenig). 



Shell perforate, solid, oblong turreted, upper whorls bluish white, 

 lower whorls yellowish white, flaramulated with dark blackish 

 brown; apex white. Whorls 8, rather flat, regularly increasing in 

 size, separated bj' an almost flat suture, beneath which a fine plication 

 is to be seen, bordered by an impressed line upon the last and 

 preceding volutions; the last whoii somewhat convex, measuring 

 about f the length of the shell. Aperture bluish within, displaying 

 the external striping, narrow, vertical ; peristome simple, acute, 

 the margin of the blue columella reflexed, forming an angle with the 

 basal margin. 



