240 TRYPANOSYLLIS (LELTACA 



Teypanosyllis 1 c^liaca, Claparede, 1868. Plate LXXXVI, fig. 14 — bristle; Plate 



LXXXVII, fig. 3— foot. 



Specific Characters.' — Head somewhat small, transversely elongated in the prepara- 

 tion, with four distinct eyes arranged in a trapezoid, the anterior pair being wider apart. 

 The median and two lateral tentacles are short, and in the preserved specimen have only 

 six articulations (nine to eleven, De St. Joseph). Palpi somewhat ovoid. Tentacular cirri 

 short ; dorsal with ten and the ventral with six articulations. Body in preservation rather 

 thick, slightly tapered in front, more distinctly so posteriorly, and with two caudal cirri of 

 seven articulations, the distal being the largest. Colour a deep yellow. Length 8 — 12 mm., 

 and segments seventy to ninety (De St. Joseph), the British forms being smaller. Proboscis 

 has ten denticulations in front; proventriculus has twenty to twenty-five rows of points. 

 Stomach with a pair of large yellow caeca. Foot has dorsally a cirrus of seven to eight 

 segments, the thickest part in the preparations being a little above the base, so that the 

 organs are fusiform. Setigerous region a blunt cone with a single spine and a fascicle of 

 compound bristles with rather short and boldly bifid tips. Ventral cirrus comparatively 

 large and lanceolate. Reproduction by stolons. 



Synonyms. 



1868. Trypanosyllis cseliaca, Claparede. Annel. Nap., p. 203, pi. xiii, fig. 3. 



1875. ,, „ Marion and Bobretzky. Ann. Sc. Nat., 6 e sei\, t. ii, p. 37, pi. xiii, fig. 3. 



1879. „ „ Langerhans. Zeitschr. f. wiss. Zool., Bd. xxxii, p. 557. 



1886. „ „ De St. Joseph. Ann. Sc, Nat., 7 e sei\, t. i, p. 181, pi. ix, figs. 57—63. 



1908. „ „ Elwes. Jonrn. M. B. A., n.s., vol. viii, p. 201. 



Habitat. — Oddicombe rocks, Torquay, between tide-marks (Major Elwes). 



Port Vend res (Claparede); Marseilles (Marion and Bobretzky); Madeira (Langerhans); 

 Dinard, France (De St. Joseph). 



Head somewhat small, transversely elongated, and with four distinct eyes arranged 

 in a trapezoid, the anterior pair being wider apart. The median and two lateral tentacles 

 are short, and in the preserved specimen have only six articulations, the terminal being 

 the largest, so that each is somewhat clavate. The palpi are ovoid. The tentacular cirri 

 are likewise short, the dorsal having nine and the ventral six divisions. 



The body, when preserved, is rather thick, slightly tapered in front, but more 

 distinctly so posteriorly, and with two caudal cirri of about seven articulations, the distal, 

 as in the case of the tentacles, being the largest. The colour is of a deep yellow, and 

 thus it is in contrast with the French examples of Trypanosyllis Krohnii. De St. Joseph 

 gives the number of segments as seventy to ninety. The proboscis has ten soft papillae 

 and ten teeth in front. It occupies segments three to eleven. The proventriculus 

 has twenty to twenty-five rows of points. The stomach which follows has a pair of 

 large caeca of a yellow colour. De St. Joseph states that he found air in these caeca as 

 in other forms. Claparede considered that the intestine was prolonged in front of the 

 latter in the form of caeca, but De St. Joseph shows that this is only apparent. 



1 See p. 169. 



