376 



" THETIS " SCIENTIFIC RESULTS. 



FASCINUS TYPICUS, sp. nov. 

 (Fig. 91). 



Stations 49, 55. 



Shell oblong elevated, rather thin. Whorls four (excluding 

 the protoconch) wound obliquely, con- 

 tracted at the suture. Protoconch dome- 

 shaped, smooth, glossy, of two whorls, 

 the first minute, the second large. Colour 

 uniform pale yellow. Sculpture : the 

 earlier whorls have each three elevated 

 spiral keels, the upper smaller; below the 

 periphery of the last whorl is another 

 large keel, followed by a sei-ies of suc- 

 cessively diminishing close spirals. The 

 spiral sculpture is overridden by fine 

 widely spaced radial threads. Aperture 

 fortified by an expanded varix of the 

 ZotoHwrn pattern. Throat smooth. Canal 

 short, slightly recurved. Length, 6*25 

 mm. ; breadth, 3 mm. 



One (the type) from 63-75 fathoms off 

 Port Kembla; a young shell 1 1-15 fathoms 

 off the Crookhaven River. Also dredged 

 in 100 fathoms b}^ Mr. G. H. Halligan and 

 myself sixteen miles east of WoUongong. 



Fig. 91. 



Family NASSID JE. 



N A S S A, Lamarck. 



NASSA JACKSONIANA, Quoy & Gaimard, sp. 



Buccimtrn jacksonianum, Quoy & Gaim.. "Voy. Astrolabe, Zool., 

 ii., 1832, p. 452, pi. xxxii., ff. 28, 29 [not Bitccinuvi jackson- 

 ianum, Kiener, Coq. Viv., ix., 1834, p. 64, pi. xix., f. 3 — Jide 

 Deshayes, Hist. Nat. Anim. s. vert., x., 1844, p. 184, footnote]. 



Stations 13, 22, 33, 35, 37, 49, 57. 



The variety taken by the " Thetis " is small and solid, appa- 

 rently the form described by Tenison Woods as Nassa tusmanica* 



Ten. Woods— Proc. Roj-. See. Tas., 1875 (187(5), p. 150. 



