FBOM TALIABU. 121 



the apex is more blunt, aud in some specimens the last 

 wliorl higher; moreover many of them are characterized by 

 a red spot near the umbilicus and, in a few cases, also a red 

 line along the margin of the aperture. Prof. 0. Boettger, 

 who has had the kindness to compare them, at my request, 

 with the types of X. halmaherica, writes that the specimens 

 could not be separated from that species, but that the red- 

 stained ones can receive a varietal name. The majority 

 of the specimens agrees in colour with the figures in the 

 Abh. Senckenb. Gesellsch., but a few ones have on the last 

 whorl purple-brown streaks on a light ground and a dark 

 apex. For those with the red stain I propose the name of: 



var. taliabuensisj n. var. 



Shell agreeing with the type in shape and size but with 

 a conspicuous red spot around the umbilicus, eventually with 

 a red bordered aperture. 



This variety may be the same form as that recorded by 

 Wallace (Proc. Zool. Soc. Lond. 1865, p. 406) and cited 

 by Martens (Ostas. Landschn. p. 196), as living on the 

 Xulla-isles, under the name of Nanina citrina L. var.; Gude 

 (A classified List of the Helicoid laud-shells of Asia: Journ. 

 of Malacology, 1903, Vol. X, p. 85) has mentioned only 

 X. citrina from these isles, probably from the same source. 



I found in the radula about 400 rows of teeth, which 

 agrees sufficiently with the number of 427, observed by 

 F. Wiegmann (Abh. der Senckenb. naturf. Gesellsch. Band 

 24, Heft 3, 1898, p. 404). 



One of the tubes containing some typical specimens and 

 one of the variety, contains the special label: »Taliaboe, 

 Wai Miha." 



2. Xesta trochus Mull.? 



Martens, Ostas. Landschn. p. 210. 



Sarasin, Die Landschn. von Celebes, p. 138, PI. 18, 



figs. 162—165. 



It is with some doubt that I have applied this name to 



Notes from the Leyden JMuseuin, A^ol. XXVIII. 



