ELYSIIDA. 389 
Near Hermeea; branchie leaf-like, with distinct foot-stalks ; 
anus lateral; penis long, without sting. 
Stiticer, Ehrenb. 
Sny.—Calliopxa, Orb. 
Distr.—5 sp. Red Sea, Europe, Massachusetts. S. modestus, 
Ehrenb. 
Form of the body like that of Galvina; rhinophores simple, 
tentacles tuberculiform; dorsal papille club-shaped; foot 
rounded in front. Penis armed with a sting. 
Herma, Lovén. 
Distr.—9 sp. Norway, Britain, ete. H. dendritica, Alder 
and Hancock (xci, 37). 
Animal elongated, tentacles folded longitudinally; papille 
numerous, arranged down the sides of the back; sexual orifice 
below right tentacles ; vent dorsal, or sublateral, auterior. 
Cyrerce, Bergh. 
Distr.—2 sp. Pelew Islands. C.elegans, Semper. 
Vent dorsal; foot transversely bipartite; penis short, 
armed with sting. 
EMBLETONIA, Alder and Hancock. 
EHtym.— Dedicated to Dr. Embleton, of Newcastle. 
Syn.—Pterochilus, A. and H. 
Distr.—4 sp. Scotland (2 sp.). In the littoral and laminarian 
zones. . pulchra, A. and.H. (xci, 38). 
Animal slender; tentacles two, simple; head produced into a 
flat lobe on each side ; papillz simple, subeylindrical,in a single 
row down each side of the back. 
TERGIPES, Cuvier. 
Example.— T. despectus, Alder (xci, 39). 
Tentacles subulate, smooth; branchiz in ‘a single row on 
each side, each with a sucker-like extremity ; foot rudimentary. 
Spawn kidney-shaped. 
Fizurus, DeKay. 
Distr.—F. dubius, DeKay. 
Foot stunted ; body slender; tentacles two; mouth ona loose 
fringe of skin with two small oral feelers; papille in two long 
rows down the back. 
Famity ELYSIID A. 
Animal shell-less, limaciform, with no distinct mantle or 
breathing-organ ; respiration performed by the ciliated surface 
of the body ; mouth armed with a single series of lingual teeth; 
