14 New Species of Aviastra. 



are very smooth, larger than those of A. flavescens and the first is 

 slightly flattened on top. The rest of the whorls are uniformly 

 slightly convex. The aperture is rather narrow, with a regularly 

 curved outer margin which is scarcely thickened within. The 

 columella is narrow, slightly twisted. The columellar fold is 

 strong, oblique, and terminates abruptly close to the margin of the 

 columella. There is a faint indication of an angle on the periphery 

 of the last whorl. 



Length 19.2, diam. 10.3, apert. 8.8 mm.; 6^ whls. (Holotype) 

 " 18.7, " 9.7, " 8.3 " 6>^ " 

 " 18.0, " 9.2, " 7.6 " 6>i " 



Hawaii : Huehue in the district of North Kona, on the north- 

 western slopes of Hualalai about 1,700 feet elevation (A. Gouveia). 



Holot3'pe and cotypes No. 41,971, paratypes No. 41,972, Bishop 

 Museum. 



By its size and form this variety is easily separable from A. 

 Jlavescens Newcomb. It is placed as a variety of Newcomb's species 

 on account of its close relationship to ^./. .y«;fzV^/a. Paratypes 

 of saxicola in the Bishop Museum collection are smaller, narrower 

 and with less convex whorls. 



A rather distinct race of emortua is found in the same deposit. 

 In this race the whorls are slightly more convex, the surface 

 glossy, and more strongly sculptured. The aperture is smaller 

 and in most of the specimens there is an additional columellar fold 

 above the usual one . The last series of measurements given above 

 is of a specimen of this race. These two races are so intimately 

 connected by intergrading specimens, that it seems unnecessary to 

 separate them. 



( Mela no sis Series . ) 

 A. whitei, n. sp. 



PI. C. Fig. 4. 



The shell is imperforate, dextral, elongate-conic, nearly solid, 

 very slightly translucent, light brownish-vinaceous, covered more 

 or less by a cuticle of a dresden-brown color. Spire conic with 

 slightly convex outlines and an acute apex. The embryonic 



whorls slightly lighter in color than the rest, very slightly convex, 



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