ART. 8 SOUTH AMERICAN GASTROPODS MARSHALL 6 



CHILINA LLANQUIHUENSIS, new species 



Plate 1, Figure 1 



Shell globose-ovoid, polished. Whorls well rounded; sutures not 

 deep, but margined by a stout revolving thread. Axial sculpture 

 weak, consisting of faint threads of growth, the rest periods more 

 marked in strength and darker color. Spiral sculpture lacking. 

 Color dark olive-green marked with five bands of spots of chestnut, 

 scarcely visible outside, but very prominent within. Body whorl 

 slightly inflated, outer lip thin. Columella slightly broadened, erect, 

 its upper extremity with a sharp oblique entering fold. Parietal 

 wall rather thickly coated with callus and bearing a small spiral fold 

 at its middle portion, its upper portion stained with bright chestnut. 

 Interior white, the color bands very prominent. 



Type.— The type (U.S.N.M. No. 414167) measures : Length, 16 mm; 

 diameter, 13 mm. It and a paratype (U.S.N.M. No. 363766) were 

 presented by Dr. H. von Ihering and came from Lake Llanquihue, 

 Chile. This lake drains directly into the Pacific Ocean, and has also 

 a connection by canal with the Gulf of Chaco, the northern end of the 

 Gulf of Corcovado. 



Remarks. — This species shows no very close relationship to any 

 other. It may be distantly related to its geographically nearest 

 neighbor, 0. hulloides Orbigny, of the island of Chiloe, Chile. A 

 highly polished periostracum such as possessed by this species, while 

 not unknown in other species, is of rare occurrence. 



CHILINA SIMPLEX, new species 



PixATE 1, Figures 2, 9 



Sholl rather thin, slender, elongate-ovoid. Spire very short, 

 about 1 mm in length; the body whorl very long, about 13 mm; 

 suture well marked, but not shouldered. Axial sculpture consisting 

 of many fine threadlike striae, invisible to the unaided eye but 

 revealed by a lens. Rest periods easily seen, partly because stouter 

 than the growi;h striae, but more because they are emphasized by 

 darker color. No indication of spiral striae. Color almost uniform 

 light olive-green, with two scarcely visible bands of pale reddish 

 arrowhead spots, which are more easily seen within the aperture 

 or by transmitted light. One of these bands is a short distance be- 

 low the suture, the other two-thirds down the whorl. There are 

 also a few faint spots of the same color, indicating the possibility 

 of more bands possible to the species. Aperture long, rather nar- 

 row. Outer lip simple, columellar lip w^iite, rather broad a«d 



