of the Virginian Coast. 45 
Fam. GLYCERID^. 
RHYNCHOBOLUS Clpd. 
Rhynchobolus Americanus Verrill. 
Olyeera Americana Leidy. Mar. Invert. Fauna R. I. & N. J., p. 15, pi. xi, 
figs. 49, 50. 
" " Ehlers. Borstenwiirmer, p. 668, pi. sxiii, figs. 43-46. 
" " Grube. Jahres-Bericht der Schles. Gesell. fiir vater- 
lan. Cultur, p. 64. 1869. 
Rhynchobolus Americanus Verr. Invert. An. Vin. Sound, p. 596 pi, x. 
figs. 45, 46. 
Common. Low water and dredgings. 
Rhynchobolus dibranchiatus Verrill. 
Olyeera dibranchiata Ehlers. Op. cit., p. 670, pi. xxiv, figs. 1, 10-28. 
Grube. Op. cit., p. 64. 1869. 
Rhynchobolus dibranchiatus Verrill. Op. cit., p. 596, pi. x, figs. 43, 44. 
Fam. CHLOR^MID^. 
TROPHONIA (if. Ed.) Gl'pd. 
Trophonia arenosa n. sp. 
PL. VII, FIGS. 92-97. 
Body elongated, widest at about the 22d segment, 
tapering gradually in both directions ; in front nearly 
quadrangular, the sides being straight, and the dorsal and 
ventral surface but slightly convex ; after the first 10-12 
segments the body is rounded. 
Branchiae very numerous, filiform, red at base, green 
externally ; the inferior shorter than the superior. 
Setae of the first five segments turned forward ; elongated, 
those of the first three reaching far beyond the branchi^. 
Tentacles not quite as long as the branchiae, canaliculated, 
margins scolloped ; color reddiah-brown with a green 
centre. Body above and below with numerous cylindrical 
papillae, of which, in adult specimens there are five longi- 
tudinal series — one median, with two on each side equally 
7 
