56 HELIX-PAPUINA. 



with blackish-brown, outer margin not expanded nor thickened, 

 basal margin narrowly expanded, columellar margin arcuate, re- 

 flexed and closely appressed. Parietal wall dark brown. 



Alt. 18*, greatest diam. 16i, lesser 15 mill. 



Maryborough, Ipswich, Pimpama and Burnett River, Queensland; 

 Richmond River, N. S. Wales, Australia. On trees. 



H. bridwilli PFR., P. Z. S. 1853, p. 49 ; Monogr. iii, p. 644. 

 REEVE, Conch. Icon., f. 1034. H. bidwilli Cox, Monog. Austr. 

 Land Sh., p. 63, t. 2, f. 3. PFR. Nomencl. Hel. Viv, p. 193. 

 HEDLEY, Proc. Roy. Soc. Queensl. v, p. 62, and p. 135, 1888. 



The name was mis-spelled by PfeifFer in his earlier publications, 

 but the strict rules of nomenclature may perhaps be ** more honored 

 in the breach than in the observance," in this case ; and I have 

 therefore, accepted Cox's emendation. 



H. NASO Martens. PI. 2, figs. 32, 33, 34, 35. 



Imperforate, depressed-trochiform ; spire conic or concave-conic ; 

 last whorl conspicuously carinated in the middle, abruptly and 

 deeply descending to the aperture. Sculptured with inconspicuous 

 growth-lines and finely obliquely corrugated in a direction at right 

 angles to the lines of growth. White or rosy-white, having spiral 

 bands or irregular radiating patches of purplish-rose color above. 

 Aperture very oblique, rosy-white inside, the parietal wall blackish ; 

 lip black, its upper margin forming two high arches, produced down- 

 ward between them in an acute triangular lobe; columellar lip broad, 

 adherent to the base. 



There are nearly five whorls, the earlier one or two pink or pur- 

 ple with a sutural white band. The last half of the body-whorl is 

 somewhat narrowed, the keel becoming more obtuse ; it is very 

 strongly swollen just behind the aperture. The lip is broadly black- 

 bordered. Alt. 21, diam. 31 mill. 



Taburi, Astrolabe Bay ; ML Astrolabe, Southeast New Guinea. 



H. naso v. MART., Jahrb. D. M. Ges. x, p. 82, 1883. H. tappa- 

 ronei E. A. SMITH, Ann. Mag. N. H. (5th ser.,) xi, p. 190, March, 

 1883. TAPP. CAN., Ann. Mus. Civ. Genov. xxiv, p. 133. 



A beautiful species, peculiar.in the bisinuate black lip. It repre- 

 sents a line of differentiation intermediate between H. diomedes and 

 H. tayloriana. The specimens before me (figured on plate 2) ex- 

 hibit considerable diversity in color-pattern. Although published 



