526 ^ri'. H. B. Preston on new 



Alt. 8*5, cliam. niaj. 16, diaai, min. 13 mm. 

 Aperture : alt. 6, cliam. 6*5 mm. 

 JIab. Eastern Peru. 



Ilelicina lacerata, sp. n. 



Shell turbinafcely conic, bright yellow ; wliorls 4^, slightly 

 inflated, regularly increasing, the last acutely carinate at the- 

 periphery, sculptured with moderately closely-set spiral lirre, 

 very obliquely crossed by minute, confused, scratch-like 

 striae ; suture lightly impressed, very narrowly callously 

 margined above; base of shell sculptured with irregular, fiine, 

 wavy, revolving lirge, considerably confused by the oblique 

 scratch-like strife which are also present on this portion of 

 the shell : columella margin whitish, descending in a gentle 

 curve, thickened at the base into a slight nodular concretion, 

 spreading outwards and upwards into a thin, ill-defined, 

 granular parietal callus ; labrum yellow, outwardly expanded, 

 reflexed, and receding below, projecting above, where it ceases 

 to be reflexed ; aperture obliquely subrectangular, rounded at 

 the base ; operculum horny, dark cliestnut, shading to pale 

 red in the median and nucleal regions, yellowish towards the 

 base on the iimer margin, slightly concave, granular, lamini- 

 ferous, with lateral nucleus. 



Alt. 6, diam. maj. 8, diam. min. 7 mm. 



Aperture: alt. 3'75, diam. 3'75 mm. 



Ilab. Rio Pucaya, Eastern Peru, at an altitude of 250 feet. 



Helicina syngenes, sp. n. 



Shell allied to //. lacerata, Preston, but rather more 

 broadly conic in shape and lacking the inflation of the whorls ; 

 it is also of a pale flesh-colour; the lirae on the spire and 

 base of //. lacerata give place in the present species to coarse, 

 closely-set, spiral strijc, while the basal columellar nodule is 

 wanting. 



Alt. 6, diam. maj. 9, diam. min. 7*5 (nearly) mm. 



Aperture: alt. 3'75, diam. 3*75 mm. 



Hah. Rio Pucaya, Eastern Peru, at an altitude of 250 feet. 



Ilelicina pucayaensis, sp. n. 



Shell globosely turbinate, greenish grey, covered with a 

 thin, hisi)id, light brownisli poriostracum ; whorls 4^, the 

 upper wliorls flattened, the last inflated, the embryonic whorl 



