170 MR. H. CHARLTON BASTIAN’S MONOGRAPH 
like that of a Sabella, composed of the finest particles of sand and Diatomacee agelu. 
tinated together. Tube longer than worm, but embracing its body pretty closely. 
7. C. PAPILLATA, n.sp. (Plate XIII. figs. 247, 248.) 
Male, length 75”, breadth 4145". 
External Characters.—Body tapering slightly anteriorly; posterior extremity rather 
narrower, and more elongated than usual. Head rounded, provided with two (upper and 
lower) horn-like papillæ in front, and. four rounded ones (crucially arranged) behind 
them; also four setæ arising close to these posterior papille. Integument brittle, 
clouded anteriorly, having well-marked transverse stri? 7045” apart, and longitudinal 
ones at a distance of 35155". 
Pharyngeal cavity and apophyses . . . ... Œsophagus &th of total length,’ slightly 
swollen posteriorly. Intestine moderately well covered with light-coloured hepatic par. 
ticles. Anus 133” from posterior extremity ; posterior boundary of anal cleft rather 
prominent, and containing a small horny body within its substance.  Spicules curved, 
rather narrower at upper extremities, 417" long; accessory pieces strong, hook-like, 
s25 long. Ocelli wanting. Excretory ventral duct rather narrow ; opening opposite 
middle of cesophagus. 
Female, not seen. 
Hab. Marine surface-mud from estuary, Falmouth. | 
The nature of the head and pharynx in this species differs somewhat from the striet 
type of this genus, though, in other important points, the characters are identical. 
8. C. BIOCULATA. | 
Rhabditis bioculata, M. Schultze.—V. Carus’s Icones Zootom. tab. viii. 9. 
‚Enoplus bidentatus, Diesing, Sitzungs. der Kais. Akad, der Wissen. xlii. Band (1860), p. 625. 
No description. 
9. C. OCELLATA. 
Urolabes ocellata, Carter, Ann. of Nat. Hist. ser. 3, vol. lv. p. 43. 
Phanoglene oceliata, Eberth, Unters. über Nemat. p- 21, pl. iii. fig. 31. 
“ Female, linear, cylindrical, unstriated l, ocellated, diminishing gradually towards 
the head, which is obtuse and provided with four short, linear cirri; also diminishing 
gradually towards the tail, which is short, somewhat curved, and furnished with a 
pointed digital termination. Mouth, vulva ^ and anus situated as in the foregoing 
species. 
* Alimentary canal the same, but with the cesophageal sheaths more bulbous poste 
riorly, and no globular dilatation of the intestinal sheath posterior to it.” 
“ Size. About nd of an inch long.” 
Male, the same as the female, with the exception of the difference in the generative 
organs." 
“ Hab. Silty clots of Oscillatoria floating in the salt-water main drain of the town of 
Bombay." 
* Perhaps striæ fine, and not recognized. * In middle of body. 
