104 THE NAUTILUS. 



fertim et oblique rugoso-plicata, rugis infra magis laevibus. Spira 

 elongata, conoideo-aitenuata, producla, apice obtuso, sat parvo, quasi 

 subtruncato, sub lente microscopice costulato. Anfractus 9, con- 

 vexiusculi, sutura impressa, ultimus oblongus. Apertura irregulari- 

 ter ovalis, supra angulata, basi ad columellam leviter angulata, parum 

 obliqua, ringens, scilicet : dente lamelliformi magno, compresso in 

 pariete, plica columellari supera oblique intrante, subquadrata et 

 mediocri ; dente basali acuto, scrobiculo extero profundo correspond- 

 ente ; et dentibus 2 in margine dextro, primo minutissimo, secundo 

 majore plicae columellari opposite. Peristoma initio strictum, turn 

 undique expansiusculum, subincrassatum, album, marginibus callo 

 nitido junctis. 



Long. 22, diam. 6| ( alt. apert. 7 mill. 



Hab. Sierra de Cosquina, Argentina. 



Allied to 0. Riojanus Doering, but larger and with different 

 aperture. 



Odontostomus gemeilatus Anc. 



The ground color is brownish in fresh specimens, not white as in 

 the type (a bleached example). A small tooth is sometimes present 

 just above the large columellar plate. The apex is like in 0. 

 punctatissimus Lea. 



Porphyrobaphe sarcostorna Anc. 



Since I sent the diagnosis of Porphyrobaphe sarcostoma, I have 

 seen the figures given in the Manual of Conchology of some varieties 

 of P. Yatesi, and acknowledge that my specimen was an extreme 

 form of Pfeiffer's species. 



DESCRIPTIONS OF NEW JAPANESE LAND SHELLS. 



BY H. A. PILSBRY AND Y. HIRASE. 



Japonia toshimana, n. sp. 



Shell narrowly umbilicate, turbinate, covered with a dark brown 

 cuticle, roughened by delicate wide-spaced thread-like or lamellar 

 striae and two series of long curved bristles near the periphery. 

 Spire conic. Whorls nearly 5, the first 2i rounded, the next sub- 

 angular in the middle, the last obsoletely binngular, fringed at the 

 angles. Aperture slightly oblique, circular, the peristome simple 



