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'' f Stat 71. Makassar, O — 32 Metres; mud, sand with mud, coral. (On Scrupocellaria, etc). 

 338. C. ) 



92. F. Stat. 117. Kuandang Bay, 80 Metres; sand and coral. (On Peropliora). 

 393. C. Stat. 133. Anchorage off Lirung, Salibabu Island, o — 36 Metres; mud and hard sand. 



(On a Perforate Coral). 

 108.O. Stat. 144. Anchorage N. of Salomakiëe (Damar) Island, 45 Metres; coral-bottom and 



Lithothamnion. 

 396. R. Stat. 162. Between Loslos and Broken Islands, W. coast of Salavvatti, 18 Metres; 



coarse and fine sand with clay and shells. 

 501. H. Stat. 163. Anchorage near Seget, W. entrance Selee (Galewo) Strait, 29 Metres; sand 



and stone, mixed with mud. (On Scrupocellaria). 



? Stat. 164. i°42'.5 S., i30°47'.5 E., 32 Metres; sand, small stones and shells. 

 139. F.) 



445. B. ] ^ " | Ambon Anchorage, 36 — 54 Metres; mud, sand and coral. (On Caberea). 



348. B. Stat. 213. Saleyer, O — 36 Metres; coral-reefs, mud and mud with sand. 

 296. C. Stat. 273. Anchorage off Pulu Jedan, Aru Islands, 13 Metres; sand and shells. 

 415. D. Stat. 318. 6°36'.5S., U4°55'.5E., 88 Metres; fine yellowish grey mud. (On 415. C, 

 Carbasca cribriformis). 



Zoarium delicate, typically repent, but sometimes becoming detached from its substratum. 

 Stolon slender, branching in a cruciform marmer, consisting of a succession of internodes, of 

 very varying length, separated from one another by diaphragms. Branches given off at the distal 

 ends of the internodes, immediately before a diaphragm, and separated from the parent-internode . 

 by a lateral diaphragm. The lateral branches may consist of a simple series of internodes or 

 may give rise to new branches. Zooecia arising from a vestigial internode, which may either 

 replace a lateral branch or may occur immediately on the distal side of the base of a branch. 

 Proximal end of the zooecium slender, stalk-like, usually short but sometimes greatly elongated. 

 The rest of the zooecium is elongated, subcylindrical and relatively slender. Orifïce terminal, 

 subquadrangular ; vestibule rather short ; collar small and delicate. The histolysis of the polypide 

 is foliowed by a great shortening of the zooecium, the body-wall of which becomes marked by 

 numerous circular striae. Polypides with 8 tentacles, which may be bent at their tips during 

 retraction. Gizzard wanting. 



I can find no differences between the specimens here recorded and the species described 

 by Busk as Farrella atlantica, from Bahia, Brazil. The 'Siboga' material has been compared 

 with the type-specimens of Busk's species preserved in the British Museum (Slide 99. 7. 1. 43 2C N 

 on Amathia brasiliensis; and unmounted material, on the same species, 87. 12.9.928; and on 

 A. distans, 87. 12.9.926). The 'Challenger' specimens show the same differences in the form 

 of the zooecia, in different states, that are here described. If the determination is correct it 

 may be concluded that the present species has a wide distribution ; and that it will probably be 

 discovered in many intermediate localities. It is probably the species which has been recorded, 

 without description, by Miss Thornely, from several localities in the Indian Ocean. 



Waters 1 ) has recorded F. atlantica from Zanzibar and British East Africa; but the 

 muscles described at the proximal end of the zooecium appear to indicate that this species 

 should be referred to Mimosclla. 



1) Waters, A. W., 1914, p. S52, PI. IV, flg. 9. 



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