ART. 13 NEW MOLLUSKS OF THE GENUS CHILINA MARSHALL. 3 



other specimens from the same place. All were presented by Dr. 

 Florentino Felippone, of Montevideo, Uruguay. All four specimens 

 are remarkably uniform in all respects. 



CHILINA FLAMMULINA, new species. 



Plate 1, fig. 4. 



Shell thin, elongate, somewhat oliviform; sutures minutely mar- 

 gined and edged with whitish j^ wliorls but slightly rounded, body 

 whorl very long, rather narrow ; spiral striae lacking ; axial sculpture 

 of regularly spaced growth lines, so fine and close as to resemble 

 striae. Aperture long and narrow, its outer lip simple, slightly ad- 

 vanced at the middle portion. Columella white, narrow, a little flat- 

 tened obliquely and with a slight twist and bearing a moderate tooth 

 on the inner edge of its upper portion, the tooth almost invisible in 

 a full front view of the shell. Parietal wall covered with a whit© 

 callus. Color yellowish with an olive tinge, much flamed with verti- 

 cal waved stripes of reddish chestnut ; interior of aperture brownish, 

 the flammulations of the exterior showing through the shell. 



The type, Cat. No. 359913, U.S.N.M., measures: Length, 14.25 

 mm.; diameter, 8 mm.; length of aperture, 10 mm. It comes from 

 Rio Fitaleuf a. Province of Chubut, Argentina, a stream in the Pacific 

 drainage. Cat. No. 359914, U.S.N.M., includes three other specimens 

 from the same place. All were received from Mrs. T. S. Oldroyd, 

 and five specimens from the same locality were returned to her. 



CHILINA FELIPPONEL new species. 



Plate 1, fig. 2. 



Shell small, globose, smooth, glossy; sutures slightly channeled, 

 body whorl inflated; surface obscurely spirally striated; back of 

 body whorl somewhat malleated ; axial sculpture of a few low growth 

 lines ; aperture very large, white within, outer lip simple, nearly cir- 

 cularly rounded; columella white, flattened and slightly excavated 

 and with a moderate, slightly oblique tooth near its upper end; 

 parietal wall with a narrow band of white callus at its lower part; 

 its upper portion like the exterior of the shell. Color brownish olive 

 with zigzag reddish vertical lines, each of which becomes broader at 

 intervals to help form four spiral bands. Apical whorls lost. 



The type, Cat. No. 360165, U.S.N.M., measures: Length, 10 mm.; 

 diameter, 7.5 mm.; length of aperture, 9 mm. It comes from Lake 

 Nahuel Huapi in the Andes of Western Rio Negro Province, Argen- 

 tina. Cat. No. 360166, U.S.N.M., includes another specimen from 

 the same place. Both were received from Dr. Florentino Felippone. 



This is one of the smallest species yet recorded for this genus. Its 

 nearest ally is G. oUvacea^ described in this paper. 



