ASPIDOBRANCHIA. EMARGINULAD. 215 
Genus 99. EMARGINULA. 
Emarginula, Lamarck, Cuvier. 
Testa conico-elevata, anticé fissa; vertex recurvus. 
Animal: tentacula duo, conica, oculis ad basin externam. 
Pallium amplissimum. Pes latus, crassiusculus. 
The shell conically elevated, with a fissure on its front 
aspect ; its apex recurved. 
- The animal with two conic tentacles ; the eyes situated at 
their external bases; its mantle very large; its foot broad and 
thick. 
1. EMARGINULA VULGARIS. 
K. testa ab apice ad basin costata; interstitiis lineis elevatis, 
spinosis, transversim sculptis. 
Patella fissura, Lister, Conch. t. ececexlii. f. 28; Petiv. Gaz. 
t. Ixxv. f. 2; Linn. Syst. Nat. 1261. no. 778; Miill. Zool. 
Dan. t. xxiv. f. 7-9; Penn. Brit. Zool. iv. 144. t. xe. 
f. 152; Martini, Conch. i. t. xii. f. 109, 110; Born. Mus. 
im savin. f. 12: Da Costa, Brit. Conch. t. 1. f. 4; Pult. 
Cat. Dorset. 51. t. xxiii. f. 4; Donov. Brit. Shells, t. iii. 
f.2; Mont. Test. Brit. 490; M. & R. Trans. Linn. Soe. 
vill. 236; Flem. Edinb. Encycl. vii. 69; Dill. Dese. Cat. 
823; Turt. Conch. Dict. 141. 
Emarginula fissura, Lam. Hist. Nat. des Anim. sans Vert, vi. 
i 
Habitat in scopulos ad littora maris. Long. +. Alt. + une. 
Shell ribbed from the base to the apex; interstices sculp- 
tured with elevated spinous and transverse lines. Length 
one half, height a quarter of an inch. 
Inhabits rocks on the seashore. 
2. EMARGINULA ROSEA. 
E. testa ovata, cancellata, epidermide fusco induta, intis rosea ; 
vertice acuto, valdé recuryvo vel subinyoluto. 
Emarginula rosea, Bell, Zool. Journ. 1. 52. t. iv. f. 1. 
