HELIX-PA PUIN A. 53 



New Guinea specimens are larger than those originally described, 

 and sometimes more conically elevated. Smith's measurements are : 

 alt. 33, diam. 38 mill. This is larger than any I have seen. The 

 aperture is sometimes pale rose tinted inside. See Smith, I. c. 



H. RANGII Lesson. (H. EXTRICANDA Tapp. Can.) 



Shell suborbicular, globulose, ventricose, imperforate, convex, the 

 last whorl of the spire much swollen, very ventricose, rounded in 

 every part. Lips thick, bordered, the left margin dilated, covering 

 the umbilicus with a smooth plate. The mouth is rounded, the per- 

 istome level and convex. The earlier whorls of the spire are small, 

 convex, united by a very delicate suture. The shell is entirely 

 covered with excessively fine interrupted striae, which viewed under 

 a lens are seen to be composed of regular, elevated aretes, forming 

 a shagreened surface. 



This helix is thick, robust, with a diameter of 18 lines [33 mill.], 

 alt. 13-14 lines [26-28 mill.] ; of a clean bright-chestnut color, the 

 greater portion of the base being of a lighter tint. It has great 

 resemblance in form and size to If. melanotragus. (Lesson.~) 



Port Dorey, New Zealand. 



H. rangii LESS., Voy. de la Coquille, Zool. ii, p. 305 (not of 

 Desh. ; not rangiana Fer.). H. extricanda TAPP. CAN., Ann. Mus. 

 Civ. Genov. xix, p. 156, 1883. 



This species is known only by the original description translated 

 above. The color of the lip is not stated. Later collectors in New 

 Guinea have not found a shell agreeing with it. The comparison 

 with H. melanotragus suggests an affinity to the group of H. bru- 

 meriensis, zeno, etc. 



Accepting the synonymy given by Dr. Pfeiffer as probably 

 founded upon some knowledge of this form not given in the descrip- 

 tion, I placed the name in the synonymy of Hadralessoni (MANUAL 

 VI, p. 163), but not without expressing a doubt as to the pro- 

 priety of such reference. It should be erased from that place. 



H. ZENO Brazier. PL 1, figs. 1, 2, 3, 4. 



Imperforate, depressed trochiform, the spire low-conic, apex 

 obtuse, whorls 4; the last obsoletely angular at the periphery, very 

 deeply deflexed toward the aperture. Surface densely, finely and 

 irregularly granulated by the decussation of spiral and oblique 

 striae. Color white, becoming lilac on the spire, the last whorl en- 



