60 HELIX-PAPUINA. 



H. STRABO Brazier. PL 2, figs. 22, 23 (typical); figs. 17, 18, 19, 



24, 25, 26 (var.). 



Imperforate, low-trochiform, spire conical, apex obtuse; whorls 

 4J, the last one acutely carinated, slightly deflexed in front. Sur- 

 face shining, obliquely, finely and irregularly corrugated, as in H. 

 tayloriana. Color creamy-white, unicolored or with spiral bands, 

 the parietal wall and base in front of the aperture flushed with pink. 

 Aperture very oblique ; lip broadly bordered with pink (or purple), 

 bisinuate above, produced into a "spout" or beak at the keel, 

 expanded below, the columellar margin adherent to the base. 



Alt. 18, diam. mill. 



Southern New Guinea at Katau River, and Maclachie Point. 



H. strabo BRAZIER, Proc. Linn. Soc. K S. Wales, i, p. 106, 1876. 

 H. roseolabiata E. A. SMITH, Ann. Mag. N. H. xix, p. 421, t. 15, 

 f. 2. H. katauensis TAPP. CAN., Annali Mus. Civ. Genov. xix, p. 

 126, t. 3, f. 1, 3 ; t. vi, f. 3. (Anatomy). 



Distinguished from the closely allied H. tayloriana by its rosy or 

 lilac-purplish lip, absence of a well-defined peripheral white girdle, 

 and general pattern of coloring. The apex is either black, corneous 

 or white. The following color-varieties have but slight claims to 

 even varietal rank ; the large series before me showing great varia- 

 tions in color-pattern, as well as typical examples of the several 

 described forms. 



The typical strabo (pi. 2, figs. 22, 23) is unicolored creamy-white 

 with rose-pink lip. Four of the specimens before me have the lip 

 purple. 



Form roseolabiata Smith (pi. 2, figs. 17, 18). Creamy-white ; 

 apical H whorls blue-black; periphery girdled with a sharply 

 defined brown band, another band bordering the suture ; lip rosy. 

 Ferguson Island, D'Entrecasteaux Group. 



Form katauensis Tapp. Can. (pi. 1, figs. 14, 15 ; pi. 2, figs. 24, 

 25, 26). Variously obliquely streaked and having spiral bands of 

 purplish-brown ; lip pink. 



H. RHOMBOSTOMA Pfeiffer. PL 16, figs. 14, 15. 



Imperforate, trochiform, rather thin, obliquely striatulate, sub- 

 decussated with very close concentric lines, rather shining, whitish- 

 tawny, ornamented with a number of chestnut bands ; spire short, 

 conic ; apex acute. Whorls 5, rather flat, the last acutely carinated, 

 slightly convex beneath, little descending in front; peristome 



