2 I 



L. nitschei so greatly in size that they can hardly be regarded as belonging to the same 

 species. It must, however, be pointed out that the Cullercoats specimens agree with them in 

 the transverse elongation of the stomach : — a fact which would not have been suspected 

 from an inspection of Vigelius' rather diagrammatic figures of the Barents Sea Loxosoma. 



11. Loxosoma loricatum n. sp. (PI. I, figs 21 — 25). 



Type. 177. N., on Canda, 177. A. Stat. 257. Du-roa Strait, Kei Islands, o — 52 Metres; coral. 



108. AJ., on Canda, 108. K. Stat. 144. Anchorage N. of Salomakiëe (Damar) Island, 45 Metres ; 



coral bottom and Lithothamnion. 

 :: 279. G., on Canda, 279. B. Stat. 250. Anchorage orï Kilsuin, W. coast of Kur Island, 20 — 45 



Metres; coral and Lithothamnion. 

 '204. G., on Canda, 204. A., Stat. 282. Anchorage between Nusa Besi and the N. E. point of 



Timor, 27 — 54 Metres; sand, coral and Lithothamnion. 

 *270. M., on Canda, 270. E. Stat. 303. Haingsisi, Samau Island, o — 36 Metres; Lithothamnion. 

 224. B., on Canda, 224. A. Stat. 305. Solor Strait, off Kampong Menanga, 113 Metres; stony 

 bottom. 



Size small, the total length not exceeding about 160 — 210 u.. The calyx, which is about 

 80 — 108 ij. broad, is covered on its posterior or aboral side by a well marked chitinous lorica, 

 about 1 30 — 1 60 \j. in length, and thus reaching nearly to the proximal end of the stalk. The 

 lorica is specially gibbons or even subcarinate in its proximal half, the distal half being more 

 flattened. It is sometimes marked by lines, longitudinal in the proximal half and concentric 

 with the distal margin in the distal half (fig. 25); but these may have been artificially pro- 

 duced by contraction. The lorica is almost conterminous with the calyx, since the stomach 

 extends nearly to its proximal end. The calyx bears a pair of minute projecting papillae, 

 probably tactile organs, at the sides of the lophophoral region (fig. 21); they are situated on 

 its anterior side, close to the edges of the lorica. Lophophore small, with 8 — 10 tentacles. 

 Stomach without lateral lobes, rather elongated. Buds few, not more than one (on one side 

 only) visible. Stalk extremely short, slightly overlapped by the lorica, and much shorter than 

 that structure ; ending proximally in a distinct disc of attachment, about 52^. broad, without 

 foot-gland. Gonads? 



The specimens here described were all found on the same species of Canda (to be 

 described in a later part of this Report). Their position appears to be nearly constant, the 

 Loxosoma usually occurring on the frontal side of the "host" attached to the distal end of a 

 zooecium, near its outer margin (fig. 25). More rarely a Loxosoma was found on the back of 

 a branch. The vibracular seta of the host can be moved to the frontal side of the branch, 

 where it takes up a more or less transverse position, just distally to the point of attachment 

 of the Loxosoma. The stalk of the Entoproct often lies over the seta, the calyx being directed 

 towards the distal end of the Canda, and having its anterior or vestibular side facing the 

 branch. It may be presumed that the L.oxosoma is not seriously incommoded by the move- 

 ments of the seta ; but it is obvious that as it commonly lies transversely across it, it must 



* The specimens marked with an asterisk were «.amined only with a low power, in spirit. 



21 



