ON THE ANGUILLULIDE. 169 
accessory pieces gos long. In mid-ventral region, above anus, is a linear series of five 
highly refractile roundish bodies, similar in kind to those of C. nudicapitata. 
Hab. Found swimming near the surface of the water in a small aquarium containing 
weeds from tide-pools, Falmouth. 
4 C. cæca, n. sp. (Plate XIII. figs. 239-241.) 
Female, length 45", breadth 550- 
External Characters.—Body tapering considerably at both extremities. Head trun- 
eate, provided with four setze directed forwards. Integument having well-marked trans- 
verse strive ab 50500 apart, and with the appearance of longitudinal also. 
Pharyngeal cavity small, indistinct ; apophyses three. (Esophagus about lth of total 
length; posterior swelling distinct. Intestine sparsely and irregularly covered with fat- 
granules of large size. Anus ygs from posterior extremity. Vulva about the middle 
of body. Ocelli wanting. | 
Male, length 345”, breadth yio- 
Anus 315^ from posterior extremity. Spicules slender, curved, topo long; acces- 
sory pieces two, nearly half as long. 
Hab. Marine surface-mud from estuary, Falmouth. 
5. C. FILIFORMIS, n.sp. (Plate XIII. figs. 242-244.) 
Female, length 45", breadth 545”. 
External Characters.—Body very slender, tapering most notably towards extremities, 
so as to appear somewhat spindle-shaped. Head bluntly rounded, provided with 2-4 
sete. Integument with transverse striæ 45359 apart. 
Pharyngeal cavity indistinct; length of apophyses sooo . (Esophagus about $th of 
total length ; posterior swelling not very distinct. Intestine thinly covered with irre- 
gularly disposed hepatic particles. Anus 333" from posterior extremity. Vulva slightly 
posterior to middle of body. Ocelli two, reddish brown, 1459 from anterior extremity. 
Male, longer, though more slender, than female; length 35", breadth 1900 . 
Anus x3" from posterior extremity. Spicules rather short, curved, i250 in length. 
Accessory pieces about half as long. 
Hab. Small green sea-weeds from tide-pools, Falmouth. 
6. C. SABELLOIDES, n. sp. (Plate XIII. figs. 245, 246.) 
Male, length 3”, breadth Br: 
External Characters.—Body tapering very slightly anteriorly, but in usual manner 
at posterior extremity. Head rounded, provided with four moderately long setæ. In- 
tegument with transverse strie 75455” apart; longitudinal not recognizable. 
Pharyngeal cavity indistinct ; apophyses about 3335” in length. Œsophagus about 3th 
of total length ; posterior third forming an elongated terminal swelling. Intestine thinly 
covered with hepatic granules. Anus 315" from posterior extremity. Spicules slightly 
cury $. ” i 
ed, T050” long. Accessory pieces yese long. 
Female, not seen. i 
ab. Marine surface-mud, Falmouth. Found in the mud, moving about with a tube 
VOL. XXV, Z 
