528 Mr. H. B. Preston on new 



Quintah'a stoddarti intermedia, subsp. n. 



Shell intermediate in form and size between Caracolla 

 stoddarti, Gray, from Phillip Island, and Helix flosculus, 

 Cox, from the mainland; though only found in a subfossil 

 state, some specimens show vividly the subperipheral chestnut 

 band, as well as traces of the transverse colour-blotches above 

 the periphery. 



Alt. 8, diam. maj. 13, diam. min. ll - 25 mm. 



Aperture: alt. 6 - 75, diam. 6*75 mm. 



Hab. Nepean Island, in subfossil state only (R. Bell). 



MathewSOCONCHA, gen. nov. (Zonitidce). 



Shell imperforate, heliciform, depressedly turbinate, spirally 

 striately sculptured, with thickened and inwardly bulging 

 columella. 



Genotype: M. belli, Preston. 



Mathewsoconcha belli, sp. n. 



Shell rather small, turbinate, dark reddish purple, orna- 

 mented with a narrow, peripheral, yellowish band, which 

 appears as a subsutural band on the upper whorls ; whorls 4, 

 the last slightly angled at the periphery, flattish, sculptured 

 with fine, closely set, wavy, spiral stria?, and marked with 

 coarse, irregular, and also rather closely set, oblique growth- 

 plica?. ; suture impressed ; base of shell moderately convex, 

 the spiral sculpture of the spire becoming subobsolete on this 

 portion of the shell ; columella margin whitish, outwardly 

 reflexed, obliquely descending and bulging a little inwards in 

 the median part, then slightly notched and again descending 

 obliquely below, spreading above into a very fine, almost 

 imperceptible, minutely granular callus which reaches the 

 upper margin of the labrum ; labruin acute, rapidly receding 

 below ; aperture obliquely, compressedly, and rather broadly 

 sublunate ; interior of shell bluish, showing the peripheral 

 band through the test. 



Alt. 6, diam. maj. 9*25, diam. min. 8*25 mm. 



Aperture : alt. 4'5, diam. 4 mm. 



Hab. Mount Pitt, Norfolk Island (R. Bell). 



Mathewsoconcha albocincta, sp. n. 



Shell rather small, somewhat depressedly turbinate, reddish 

 yellow, ornamented with a narrow, white, peripheral band ; 

 whorls 4, regularly increasing, sculptured with oblique, radiate, 



