GINGLYMACONCHA. VENERIDZ. 307 
narrow streaks. Epidermis yellowish-white. Length one and 
a quarter; height one and two-eighths of an inch. 
Venus laminosa, Laskey, Trans. Wern. Soc. i. t. vii. f. 16; 
Mont. Test. Brit. Supp. 38; Flem. Edinb. Encycl. 94 ; 
Turt. Conch. Dict. 233. 
This species is extremely rare; it inhabits the English, 
Scotch and Irish seas. 
3. HERMIONE REFLEXA. 
Shells elongated, slightly convex, concentrically sulcated ; 
the interstices elevated, reflexed, behind more distant from 
each other, and undulated; the interstices and grooves sculp- 
tured with very narrow streaks. Epidermis yellowish-brown, 
ornamented with pale reddish bands. Length one and two 
eighths ; height one inch. 
Venus reflexa, Laskey, Trans. Wern. Soc. i. t. vii. f. 1; 
Mont. Test. Brit. Supp. 40; Flem. Edinb. Encycel. 94; 
Turt. Conch. Dict. 233. 
This species, which I believe with H. laminosa to be ex- 
tremely rare, is found on the southern coasts of Devon and 
Ireland, and the northern coasts of Scotland. I described 
both these species from specimens in the collection of Mr. 
Knox of Glasgow, who assured me that he had seen but two 
of the first and one of the last, taken by a friend of his m the 
Frith of Clyde. 
Genus 49. ZuCLEICA. 
The shells rounded, thick and slightly compressed ; the um- 
bones refiexed. The hinge with two lamelliform teeth in each 
valve, that in the hinder one in the left valve much smaller 
than the anterior one. 
1. ZUCLEICA FASCIATA. 
Shell concentrically ribbed; the ribs generally rounded, 
always very irregular ; sometimes narrow and slightly reflexed. 
Epidermis yellowish, pale, fuscous or reddish-purple, gene- 
