80 PLACOSTYLUS, SOLOMON IS. 



Aperture blue-white within ; peristome white, hardly expanded, 

 slightly thickened within, often lightly sinuate above. Columella 

 broadly concave below, passing into a moderate or rather strong fold 

 above ; parietal callus thin and translucent, bearing a white tubercle 

 (sometimes obsolete or nearly so) near the columellar fold. 



Alt. 69, diam. 30, longest axis of aperture 40 mm. 



Alt. 64, diam. 30, longest axis of aperture 39 mm. 



Alt. 50, diam. 24, longest axis of aperture 32^ mm. 



Ysabel I. (Brazier, Cox, Pease) and Faro 1. (Guppy), Solomon 

 group. 



Bulimus founaki H. & J., Voy. au Pol Sud, Zool., Atlas (livr. 

 23), Moll., pi. 8, f. 13-15 (1842-1853); ROUSSEAU, text of same, p. 

 32 (1854). PFR., Monogr. iii, p. 407 (1853); iv, 467 ; vi, 85; viii, 

 122. E. A. SMITH, P. Z. S., 1885, p. 955.-^. stutchburyi Pfr., 

 var., CROSSE, J. de C., 1864, p. 142 Bulimus hombroni CROSSE, 

 Journ. de Conchyl. xix, 1871, p. 178; 1894, p. 171. Bulimus pale- 

 tuvianus GASSIES, Journ. de Concliyl., 1859, p. 370 ; Conch. Nouv. 

 Caled., i, p. 48, pi. 2, f. 2. B. rhizophorarus GASSIES, Faune Conch. 

 N. Caled., ii, p. 91 (proposed as a substitute for B. paletuvianus) ; 

 B. rhizophorarceus GASSIES, index to same vol., p. 204; B. rhizo- 

 phorareus GASSIES, Recapitulation, vol. iii, p. 100. B. rhizophor- 



arum GASSIES, Journ. de Conchyl., 1878, p. 337 (as Fijian) Pla- 



costylus founaki KOBELT, Conchyl. Cab., p. 76, pi. 18, f. 2-6. 

 Placostylus macfarlandi Braz., KOBELT, Conchyl. Cab., p. 33, pi. 8, 

 f. 2, 3, not of Brazier. 



Varies considerably in figure, markings, size, and prominence of 

 the parietal tubercle. Sometimes the color-pattern would be better 

 described as triangular spots, more or less confluent into longitudinal 

 streaks, on a greenish-yellow ground. The markings vary from 

 olive-green to reddish-brown. The lip is always white, sometimes 

 slightly cream-tinted, and the interior blue-white. 



The species was described from a young but very characteristic 

 specimen (fig. 14). Crosse changed the name to B. hombroni be- 

 cause "founaki" is not Latin a trivial reason, which other authors 

 have justly disregarded. According to Gassies, founak is a native 

 word for chief. 

 Var. paletuvianus Gassies. PI. 34, figs. 18, 19. 



Similar to the type but wanting zigzag markings, the cuticle being 

 brownish-yellow with some narrow brown streaks. Described as 



