478 MR. A. W. WATERS ON 



(Ind. Ocean, TJiornely). Prison Island, Zanzibar Channel (505), 

 8 fath., coll. by Crossland. 



ScRUPOCELLARiA piLOSA Savigny & Audouin {non Busk). 

 (PI. LXVIII. figs. 3, 4.) 



Crista pilosa And. Description de I'Egypte, Hist. nat. p. 241 ; 

 Savigny's pi. xii. figs. 1,-1,,. 



Gellularia spatulata d'Orb. Pal. Fran^., Terr. Cret. p. 50 

 (1850-52). 



Some dried specimens from Wasin, B. E. Africa, seem to be 

 the species figured by Savigny. The zooecia are narrow, pro- 

 ducing a wavy appeai-ance, as figured by Savigny. The opesium 

 has a very narrow border, and the scutum, which varies in shape, 

 is small and does not nearly cover the aperture. Both the distal 

 and proximal ends of the scutum are rounded, with the distal end 

 the larger, and the scutum is without cervicorn marks. There 

 are two or three oral spines on the outer side and one or two on 

 the inner, the outer ones, especially the lower one, which is 

 stouter, are sometimes long, though in the specimens they are 

 mostly broken ofi". The vibraculum is small, partly free at the 

 outside of the zoarium, with the groove extending slightly beyond 

 the vibracular chamber, but not as much so as in S. macandrei B. 

 The vibracular setae are smooth and rather longer than a zocecium. 

 The zoarium at a bifurcation has a medium spine and one vibra- 

 culum. The lateral avicularium is placed somewhat diagonally, 

 instead of standing straight out. The radicles are large and are 

 serrate near the ends. 



There are no ovicells on the specimens. 



Busk in the ' Challenger ' Report, p. 24, describes a species 

 from the southern hemisphere as S. pilosa Sav., but this seems 

 a, doubtful determination, for the shape of the scutum is difi"erent 

 and the vibracular chamber is very wide and large. 



Busk speaks of it as the species of Audouin, whereas Audouin 

 calls it the species of Lamouroux, and supported the identity on 

 Lamouroux having presented some of the type to M. Bory de 

 St. Vincent which was compared. However, it was never the 

 species of Lamouroux but of Pallas, and while his description 

 would tally with this species, it would equally well cover a large 

 number of other Scrupocellarice. D'Orbigny gave the name 

 spatulata to Savigny's figure, and in the same way he named 

 many of Savigny's other figures, althoiigh already named by 

 Audouin. Savigny having given recognisable figures, we may 

 suppose that Pallas and Lamouroux were dealing with the same 

 thing, although this can never be known with certainty. 



This is much like Sa-upocellaria pusilla Smitt, which, however, 

 has cervicorn markings on the scutum. 



The various species now considered might well be ranged round 

 >S'. scrupea a,s varieties. 



Log. ? Mediterranean {Pallas., etc.). Wasin, Brit. East Africa, 

 10 fath. (500), collected by Crossland. 



