96 



PLACOSTTLUS, SOLOMON IS. 



Bulimus sellers! Cox, P. Z. S., 1871, p. 644, pi. 52, f. 3 PFR., 



Monogr. viii, p. 31.Placostyhts sellersi Cox, KOBELT, Conchyl. 

 Cab., p. 55, pi. 13, f. 6, 7. 



An isolated species, resembling P. miltocheilus in color, the ample 

 umbilical rimation and slender spire, but with the lower two-thirds 

 of the outer lip more or less thickened within, and having a stronger 

 columellar told. Fig. 57 is copied from Dr. Cox's type figure. 



Section Eumecostylus Albers, 1860. 



Much elongated, with 3^ early whorls pitted ; lip a little reflexed ; 

 columella curved in a long spiral fold. 



Other Solomon species have but 2| pitted nepionic whorls, and a 

 somewhat differently formed columella. Both of the species are 

 confined to San Christoval, the most southern island of the <?;roup. 



P. CLERYI (Recluz). PI. 40, tigs. 68, GO, 70. 



Shell minutely rirnate, oblong- fusiform, more or less compressed 

 laterally and cylindrical, rather solid. Pink or flesh-colored, becom- 

 ing purplish-red on the spire and destitute of cuticle throughout ; the 

 surface lusterless, sculptured with low, coarse growth-wrinkles and 

 an inconspicuous fine spiral rnalleation. Whorls 6^, the first often 

 amputated and plugged, the earlier 3^ densely pitted, the last one or 

 two whorls more rapidly descending. Aperture auriform, somewhat 

 effuse or retracted below; outer lip hardly expanded, somewhat 

 thickened within; basal lip broadly arcuate, somewhat expanded; 

 columella broadly concave below, curving in a strong spirally enter- 

 ing fold (often obscurely bifid) above; parietal wall covered with a 

 thin callus, sometimes bearing a small tubercle far within and near 

 the columellar fold (fig. 69). 



Alt. 100, diam. 35, longest axis of aperture 58 mill. 



Alt. 103, diam. 30, longest axis of aperture 50 mill. 



San Christoval, Solomon group, at Makira Harbor (Macgillivray) 

 and the Koofeh district on the north coast (Guppy). 



Bulimus cleryi PETIT, Journ. de Conchyl., 1850, p. 56, pi. 4, f. 1. 



-PFR., Conchyl. Cab., p. 243, pi. 65, f. 3 ; Monogr., iii, p. 306 ; iv, 



369; vi, 13; viii, 27. CROSSE, Journ. de Conchyl., 1864, p. 133. 



-E. A. SMITH, P. Z. S., 1885, p. 594 Placostylus cleryi KOBELT, 



Conchyl. Cab., p. 57, pi. 15, f. 1 ; pi. 14, f. 1. 



This large and very distinct species somewhat resembles, but is 



