406 Mr. W. Clark on British Mollusca. 



some of which are subobsolete; the upper ridge of the face has 

 about 8-10 little short spines, 4-5 on each side, near the eyes ; 

 the vertical plate is smooth, with a widely rounded outline be- 

 hind, very narrow and sharp over each eye, then in front, with 

 a wide sinus on each side and a broad rounded lobe in the 

 middle. 



The eyes, antennae, and legs are of a pale greenish hue ; and 

 doubtless, when the creature is alive, these hues are much 

 brighter and must contrast. It was collected at Peradenia by 

 Mr. Thwaites. 



4. Zephronia (Sphreroth.) De Lacyi, n. s. PI. VII. figs. 2 & 2 a. 



Z. politissima, postice subangustata, supra olivaceo-cinerea, segmentis 



singulis postice flavo marginatis. 

 Hab. in Nova Zealandia. 



Named in compliment to my brother-in-law, Mr. De Lacy, of 

 Alma Cottage, Ravensbourne, Otago, New Zealand, a gentleman 

 very fond of natural history, and who studies it in his New 

 Zealand home. 



This species is very highly polished, and has a few scattered 

 punctures on each segment, only visible by turning the Zephronia 

 about. It is of a delicate pale greyish-olive hue, perhaps greenish 

 when alive, the segments narrowly margined with yellow. Nu- 

 chal plate margined in front, and with a crescent-like impressed 

 line close to the anterior margin, circle outwards. The body is 

 shortish, and the last segments are gradually narrowed. The 

 last segment, before the hinder margin, has a widish paler band. 

 The legs and under side are yellowish. It is a pretty and very 

 distinct species, the first I have seen from New Zealand. In 

 one specimen the segments are curiously mottled with pale 

 yellowish patches. 



The complete figures are of the size of nature ; the others are 

 magnified, and were carefully drawn by young Mr. Mintern, the 

 pupil of Mr. Ford, who directed him when drawing the objects. 



XLIII. — On Mr. Jefi'reys^s * Gleanings in British Conchology,' 

 pahlished in the 'Annals of Natural History' fur January and 

 August 1858 and for January and February 1859. By Wm. 

 Clark, Esq. 



To the Editors of the Amials of Natural History. 



Gentlemen, 7 Norfolk Crescent, Bath. 



Mr. Gvvyn Jeffreys, my fellow-labourer in the MoUuscan 

 fields, favoured me very lately with a couple of days' visit, to 



