180 GASTROPODA. [Pectinibranchia. 



Subsp. septentrionale, Suter, 1907. Plate 11, fig. 9. 



Lagochilus Chiltoni, subsp. septentrionale, Suter, P. 3Lil. S., vii, 1907, 238, 

 ]]. 22, f. 9. 



Distinguished from the species by the following characters : It is 

 considerably larger, the spiral striation is quite distinct, especially 

 upon the base, and the umbilicus is a little larger and open, not covered 

 over by the reflection of the inner lip. Operculum unknown. 



Diameter, 3 mm. ; height, 4 mm. 



Dentition unknown. 



Type in my collection. 



Hab. Cowes Bay, Waiheke Island, type (H. S.) ; Cape Camel, 

 near the North Cape (C. Cooper). 



Remarks. The specimens from Cape Camel are slightly more 

 slender, the umbilical tract is angled, and the last whorl has a whitish 

 spiral band above the periphery in some examples. 



4. Lagochilus cytora, Gray, 1850. Plate 35, fig. 2. 



Cyclophora cytora, Gray, P.Z.S., 1849 (1850), 167; A.M.N.H. (2), vii, 08; 

 Pfeiffer, Mon. Pneuni. viv., i, 86. Lagochilus cytora, Gray: Hedley and 

 Suter, P.L.S. N.S.W. (2), vii, 621 ; Suter, J. de Conch., xli, 223. 



Shell minute, turbinate, perforate, rather solid. Sculpture con- 

 sisting of distant regular spiral threads, crossed by oblique membran- 

 aceous, subequidistant, hairlike riblets ; at the points of intersection 

 short epidermal hairs arise. Colour brown or horny. Epidermis 

 thin, easily rubbed oft', not shining. Spire short, slightly convex, 

 acute, but little higher than the aperture. Protoconch of 3 dark- 

 brown, shining, strongly convex whorls, the first 2 smooth, the third 

 radiately ribbed. Whorls 5|, moderately convex, the last with a 

 slight emargination at the upper end of the peristome ; base con- 

 vex. Suture impressed. Aperture, oblique, nearly circular. Peristome 

 simple, straight, thickened internally, with the margins approximate, 

 united by a thin callus. Columella short, oblique, arched, half- 

 covering the narrow but deep perforation. Operculum of a few 

 whorls only. 



Diameter, 2-5 mm. ; height, 2 mm. 



Animal and dentition unknown. 



Type in the British Museum. 



Hab. Auckland, type (Greenwood) ; Howick ; Ohaupo ; Hunua 

 Range ; Mount Pirongia ; Wairangi, Waikato. Living in damp places, 

 of the bush, in mould, under rotten pieces of wood, sometimes on 

 fronds of ferns. 



">. Lagochilus fasciatum, Suter, 1894. Plate 35, fig. 3. 



Ln!/r>i;/,t. l<i*ciatum, Suter, T.N.Z.I., xxvi, 1893 (1894), 132, pi. 19, f. 30, 31. 



Shell small, turbinate, subperforate, rufous, thin. Sculpture con- 

 sisting of thin, close, membranaceous, white, slightly waved radiate 



