M. M. SCHEPMAN, LAND- AND FRESHWATER MOLLUSCA ETC. . 165 



Chloritis Beck. 



1. Chloritis (s. str.J circumdata Férussac. 



Férussac. Hist. Moll. PL 77, fig. 1. 



Pfeiffer. Mon. Helic. Vol. I, p. 387. 



Reeve. Conch. le. Hélix, fig. 470. 



Tapp. Canefri. Fauna Mal. New Guinea, p. 170. 



Pilsbry. Man. of Conch. Ser. II, Vol. VI, p. 246, PI. 52, fig. 74 — 76. 



Vernhout. Notes Leyden Muséum, Vol. 35, p. 141, PL 7, fig. 2. 



Aru Islands. Dobo, Aug. 9, 1909; Fenuabori River, Dec. 5, 1907. 



The spécimens from the first named localïty . are smaller than those from the latter 

 one, amongst thèse is a very large spécimen, with a diam. maj. of 37 mill., which in the 

 less descending aperture, approaches C. maforensis Tapp. Can., but in other respects seems 

 to belong to circumdata ; as the last whorl has repeatedly been broken and repaired, this 

 may perhaps account for the aberrant shape, as to size, this may be due to the same cir- 

 cumstance, as the spécimen may hâve continued its growing-process after breakage. Moreover 

 one finds often spécimens being considerably smaller or larger than usual, in many species 

 of différent gênera. It seems not to be advisable to give a varietal name to a single spéci- 

 men of irregular development. The shell is rather worn. 



2. Chloritis (Sulcobasis) beatriçis Tapparone Canefri. 



Tapp. Canefri. Fauna Mal. N. Guinea, p. 163, PL 4, fig. 14, PL 8, fig. 16. 

 Pilsbry. Man. of Conch. Ser. II, Vol. VI, p. 260, PL 36, fig. 19. 



var. depressa n. var. PI. V, fig. 2. 



Kobelt. Martini-Chemn. Ed. II, Vol. I, Abth. 12, IV, p. 646, PL 186, fig. 1, 2. 



Shell considerably more depressed than the type, with rather flat spire and last whorl 

 descending near aperture, upper margin of peristome more rounded. 



Diam. maj. (of large spécimen) 56, ait. 40 ; apert. ait., incl. perist. 30'/.,, lat. 2 ^ l j 2 m iU- 



n (smallest „ ) 42, » 27 ; „ „ 21 '/ 2 , „ 21 



New Guinea. Alkmaar, July — Aug. 1907; Sept. 20, Nov. 1909; Bivak Island Jan. 19, Febr. 

 1910; Geitenkamp, July 20, 1907; Lorentz River, May 19, 1907; Rivier-karap, Febr. 5, 

 1910; Van Weel's Camp, May 27, 1907; Kloof-bivak, Oct. 19, 1912 (leg. Versteeg). 



I hâve considered thèse spécimens as a variety, though the différences are rather impor : 

 tant, the whole shell is much more depressed, which is especially due to the less elevated 

 spire, which in the spécimens under considération may be called flattened, but also the last 

 whorl is more depressed and descends near the aperture; the upper margin of the peristome 

 is nearly straight in the figure of T. CANEFRI, curved in the variety; the measurements of 

 T. CANEFRI are: diam. maj. 52, ait. 35 mill.; but his figure has an altitude of about 41 mill., 

 if taken from the spire to base of aperture; on the contrary the spécimens agrée in nearly 

 every respect with KOBELT's fig. (Le.) even as far as concerns thèse measurements; unfor- 

 tunately CaNF.FRI gives no basai view, in the front view it appears that the umbilicus would 

 be narrower than in KOBELT's spécimen, which agrées also in this particular with those enu- 

 merated above. 



