PLACOSTYLUS, SOLOMON IS. 91 



parietal wall bearing a white callus, translucent in the middle, and 

 provided with an oblong tubercle above the columellar fold. 



Length 52, diam. 23, longest axis of aperture 30 mill. 



"Length 2.1, diam. 1, length of aperture 1.18 inch." (Cox) = 

 52^, 25, 291 mill. Solomon h. 



Bull in us (Enmeco stylus} scottii Cox, P. Z. S., 1873, p. 152. 

 PFR., Monogr., viii, p. 28. 



The figure and description are from a specimen received from Dr. 

 Cox, which, except in being two mill, narrower than the dimensions 

 assigned to the type, agrees excellently with Cox's description. 

 Kobelt's P. (scottii Cox. var.) mendance. evidently has nothing to do 

 with this species. 



P. scottii is not remote from P. hary rarest, but the columellar fold 

 is stronger, the whorls less convex, and the cuticle not figured, being 

 merely streaked. 



P. ULIGINOSUS ' Heimb.' Kobelt. PI. 37, figs. 46, 47. 



Shell covered-perforate, long-ovate, rather thin but solid, irregu- 

 larly and quite rudely striate, sculptured with fine, confluent, trans- 

 verse wrinkles ; covered with an adherent buff-brown glossy cuticle, 

 ornamented with very distinct streaks and flames of chestnut. Spire 

 conic, buff, the apex rather obtuse. Whorls 5 to 6, a litlle convex, 

 separated by a distinct though scarcely impressed suture, the last 

 whorl large, a little inflated, occupying two-thirds the length of the 

 shell, almost lirate at the base, flattened behind the aperture, neither 

 descending nor ascending in front. Aperture slightly oblique, ovate- 

 acuminate, brownish-white within ; peristome unexpanded or very 

 narrowly reflexed, white-lipped within, the margins hardly united ; 

 outer margin but slightly arcuate, basal margin spreading, columellar 

 margin dilated, reflexed, provided with a compressed entering white 

 fold, the parietal wall of the aperture sometimes having a small whit- 

 ish tooth, sometimes toothless. Alt. 50, diam. 23, alt. aperture 29 

 mill. (Kobelt}. Solomon Js. 



Placostylus uliginosns von Heimburg, KOBELT, Conchyl. Cab., 

 Placostylus, p. 73, pi. 17, f. 6, 7 (1891). 



The following form is probably identical with or a variety of P. 

 uliginosus : 



P. hobsoni (Cox). PI. 37, figs. 44, 45. 



" Shell deeply and openly rimate, comparatively thin and light for 



