50 



PROCEEDINGS OF THE MALACOLOGICAL SOCIETY. 



deep, apex scarcely immersed. Whorls 4, rather tumid, slightly 

 flattened above the periphery near tlie mouth, subcompressed round 

 the moderate pervious umbilicus, which is slightly obliquely excavated 

 behind the mouth; last whorl slightly descending, then suddenly and 

 deeply deflected, gibbous and constricted behind the peristome. 

 Aperture subcircular, very oblique. Peristome whitish or fulvous, 

 thin, slightly expanded, almost continuous ; margins regularly curved, 

 columellar margin triangularly dilated, scarcely impinging on the 

 moderate deep umbilicus. Diam. maj. 10, min. 8'5mm. ; alt. 5-5 mm. 



Hob. — Islands in Torres Straits. 



Type in my collection. 



Prom the late Mr. E. L. Layard I received two specimens (labelled 

 C. brevipila), and 1 have pleasure in associating this pretty little 

 species with the name of this lamented and indefatigable naturalist. 

 In Mr. Ponsonby's collection are three specimens (labelled " G. brevipila^ 

 New Holland"), which I refer to this species. One of these measures 

 diam. maj. 11, min. 9 mm.; alt. 6 mm. In the same collection are 

 four other specimens from Cape York, Queensland, and one from the 

 Richmond River, New South Wales. 



C. Layardi is easily distinguished from C. brevipila and its allies by 

 the flat spire, almost continuous peristome, and the gibbous crest 

 behind the peristome. 



EXPLANATION OF PLATES, 

 Plate IV. 

 Chloritis Eduardi, n.sp, 

 ,, Martensi, Pfr. 

 ,, suhtilis, n.sp. 

 ,, Moellendorffi, Ancey. 

 ,, fausta, n.sp. 



,, silenus, Angas, portion of periostracum enlarged. 

 ,, Fonsonbyi, n.sp. 

 ,, exigua, n.sp. 

 , , brevipila, Pfr. , portion of periostracum enlarged. 



Plate V. 

 Chloritis Ctitninffi, n.sp. 

 ,, novocambrica, n.sp. 

 ,, disjuncta, n.sp., enlarged two diameters. 

 ,, Layardi, n.sp., enlarged two diameters. 

 ,, covjuncta, n.sp., portion of periostracum enlarged. 

 ,, fraterna, n.sp. 

 ,, macrostoma, n.sp. 



