HELIX-PAPUINA. 37 



H. NODIFERA Pfeiffer. PL 13, figs. 34, 35. 



Shell umbilicate, trochiform, acutely carinated, rather thin, 

 striatulate, diaphanous, pale buff. Spire conoid, apex rather acute, 

 suture lightly impressed ; whorls 5, slightly convex, the last not 

 descending, having an acute white keel in the middle, convex above 

 and below. Aperture oblique, subrhomboidal, the peristome broadly 

 expanded, margins subparallel, columellar margin narrowly vault- 

 ingly reflexed above the narrow umbilicus, and having a nodule on 

 its inner edge. Alt. 18, greater diam. 30, lesser 24 mill. (Pfr.) 



Island of Batchian, Moluccas. 



H. nodifera PFR., P. Z. S. 1861, p. 21, t. 2, f. 4 ; Novit. Conch., 

 p. 166, t. 45, f. 7, 8 ; Monogr. v, p. 328. Papuina nodifera WALLACE, 

 P. Z. S. 1865, p. 411. 



Distinguished by the acute keel, nodiferous columella and light 

 color. 



(8.) GROUP OF H. LABIUM. 



Umbilicate ; depressed-trochoidal. not acutely keeled. New 

 Guinea. 



* 



H. LITUUS Lesson. PL 10, figs. 77, 78. 



Shell narrowly umbilicated, orbicular-conoid, apex obtuse, shin- 

 ing, buffish-brown or reddish-chestnut, encircled by a red or black- 

 ish zone ; whorls 6, a little convex, the last rather flattened below. 

 Aperture transversely ovate ; peristome broadly reflexed, blackish, 

 or rosy within ; basal margin straightened somewhat, forming an 

 angle with the columellar margin, which is dilated, nearly closing 

 the umbilicus. Alt. 25, greater diam. 37, lesser 29 mill. (Pfr.) 



Port Dorey ; Is. Sorong ; Is. Jobi , Bay of Geelvink; Andai. 

 Amberbaki, New Guinea. 



H. lituus LESS. Voy. de la Coq. Zool., p. 309. FER. & DH., Hist. 

 i, p. 175, t. 106, f. 6-9. PFR., Conchyl. Cab. p. 433, t. 151, f. 3, 4 ; 

 Monogr. i, p. 326. TAPP-CAN., Ann. Mus. Civ. Genov. xix, p. 138. 

 1883 ; 1. c. 2d. Ser. iv, p. 137, 1887. H. ardouini DESH., Encycl, 

 Meth. Vers. ii, p. 266. H.papuensis Q. & G., Voy. dePAstrol, Zool. 

 ii, p. 96, t. 7, f. 10-13. 



There is considerable variation in this species, according to Tap- 

 parone Canefri. The shell is covered with a thin, pale corneous 



