of ilie Virginian Coast. 63 
The few examples which were found, were of small size. 
PISTA Mgrn. 
PiSTA CRisTATA Mgm. 
Malmgren. Nord. Hafs-Ann., p. 382, pi. xxii, f. 59. 
Vehrill. Anier. Journ. Sci. Arts, Third Ser , vol. x, p. 40. 
A single imperfect specimen was collected, consisting of 
the anterior half. 
LEPR^A Mgrn. 
Lepr^a RUBRA Verrill. 
Invert. Animals'^of Vineyard Sound, etc., p. 615. 
Common, but all of the specimens were of small size. 
POLYCIRRUS (Gruie) Mgrn. 
PoLYCiRRUS EXiMius Verrill. 
Torquea eximia Leidy. Marine Invert. Fauna R. I. & N. J., p. 14, pi. 
xi, figs. 51, 52. 
Polycirrus eximius Verr. Invert. An. Vin. Sound, etc., p, 616, pi. xvi, f. 85. 
ENOPLOBRANCHUS Verrill. 
Enoplobranchus sanguineus Verr. 
Ohmtobranchvs sanguineus Verr. Invert. An. Vin. Sound, etc., p. 616. 
Enoplobranchus sanguineus Verr. Check List of Marine Invert, of the 
Atlantic Coast from Cape Cod to the Gulf of 
St. Lawrence, p. 10 (advance sheets). 
LYSILLA Mgrn. 
Lysilla alba n. sp. 
PLATE X, FIG. 148. 
Frontal membrane divided into five lobes by deep in- 
cisions, each lobe being scolloped or deeply folded. 
Cirri, long, white with colorless centre ; some filiform, 
others enlarged and flattened in their outer third. 
Body, first third swollen, then tapering uniformly but 
very slightly. Anterior two-thirds white, transparent j in- 
