12 AMPHIDROMUS AND DRAPARNAUDIA. 



produced in a shalloiv, slightly recurved spout situated mainly below 

 the termination of the carina ; upper and basal margins reflexed. 

 Alt. 20, diam. 15 mm. 



Sumatra : Marang, on the southwestern coast (W. Doherty). 



Nanina (Ariophanta) dohertyi ALDRICH, Nautilus vi, p. 90 (De- 

 cember, 1892), pi. ii, f. 1, 2. Pseudopartula dohertyi PILS., Nautilus 

 x, p. 110 (Feb., 1897). 



Arboreal, and when alive of a green color, from the hue of the 

 mantle showing through the translucent shell. It is much more 

 elevated than the allied A. nasutus. 



A. NASUTUS (Metcalfe). Vol. II, pi. 3, fig. 42. 



Shell subdiscoidal, sinistral, carinate, narrowly perforate, very 

 thin, decussated by very fine spiral and growth lines ; pellucid, hya- 

 line, ornamented with a narrow pale brown line at the carina ; spire 

 somewhat conic, whorls 5^, flattened, the last one very acutely cari- 

 nate, glossy beneath. Aperture subrhomboidal, much produced at 

 the outer angle ; peristome simple, thin, the upper margin scarcely 

 reflexed, basal margin more reflexed in front, nearly covering the 

 umbilicus. Length 1.4, width 1.1, alt. 0.5 inch (Metcalfe). 



Borneo (Rajah Brooke, Wallace); Baram (Kiikenthal). 



Helix nasuta METC., P. Z. S., 1851, p. 70. REEVE, Conch. Icon., 

 f. 1031 PFR., Monogr. iii, p. 203. Nanina (Ariophanta) nasuta 

 PFR. & CLESS., Nomendator Hel. Viv., p. 56. TRYON, Man. 

 Conch. (2), ii, p. 21, pi. 3, f. 42. Ryssotaf nasuta WALLACE & H. 

 ADAMS, P. Z. S., 1865, p. 407. Nanina nasutus MARTENS, Ostas. 

 Zool., Landschn., p. 224. Dyakia nasuta KOBELT, Abhandl. Senck. 

 Ges. xxiv, p. 53. 



" Covered with a thin epidermis of a pale straw color, under which 

 the shell is milky white." 



Kobelt describes a specimen from Baram, collected by Kiikenthal, 

 decidedly smaller than the type, measuring, alt. 12, diam. 31 mill. 

 The color is very pale corneous-green. 



Genus DRAPARNAUDJA Montrouzier, 1859. 



Draparnaudia MONTR., Journ. de Conchyl. vii, p. 288 (1859), for 



D. michaudi Montr., = B. sinistrorsus Desli PJLSBRY, Nautilus 



x, p. 110 (Feb., 1897) ANCEY, Nautilus xi, p. 27; Ann. Mus. 



