MARINE MOLLUSCA OF THE SCOTTISH NATIONAL ANTARCTIC EXPEDITION. 107 



Trophon hoylei, Streb. 



Trophon hoylei, H. Strebel, "Beitr. der Mollusk. Fauna der Magalh. Provinz," Zool. Jahrb. 

 Jena, 1904, p. 227, Taf. viii., figs. 68 a-f, 69 a-c. 



flab. Shore, Port William, Falkland Islands, January 31, 1904. 



We are not satisfied as to the specific distinctness of this species from T. liratus, 

 Couth. The form and texture seem almost identical, but coloration, notably the 

 dark purpurescent aperture, somewhat different. 



Trophon liratus (Couth.). 

 Fusus liratus, Couthouy ; Gould, Wilkes' Expl. Exped., p. 231, fig. 282 a-c. 



Hal. Station 118, Stanley Harbour, Falkland Islands. Dredged at 3 fathoms, 

 January 15, 1903. 



Many fine examples, in perfect condition, with operculum. We consider this the 

 Buccinum cancellarioides, Reeve. It is evidently variable, and out of the forms 

 Dr HERMANN STREBEL (to whom we are much indebted for the examination of our 

 examples of this and its allies) has recently propounded several new species. 



Trophon minutus (Strebel, MS.), sp. n. (Plate, figs. 7, 7a). 



T. testa parva, fusiformi, albo-cinerea, anfractibus 5-6, quorum apicales 2 hyalini, perlaeves, coeteris 

 apud suturas multum impressis, gradatulis, longitudinaliter arctissime costatis, costis Isevibus, incrassatis, 

 numero ultimum apud anfractum circa 22, interstitiis Isevibus, apertura ovata, albo-lactea, labro paullum 

 effuso, superne rectangulo, columella recta, canali paullum prolongato, lato. 

 Long. 7'3, lat. 4, apertura 4 mm. 



Hob. Station 325, Scotia Bay, South Orkneys, 9-15 fathoms, April-August 

 1903, February 1, 1904. 



We are requested by Dr HERMANN STREBEL to draw up the description as above of 

 a small Trophon, already differentiated by him in MS. as having been found in South 

 Georgia Island recently by the Swedish South Polar Expedition. Only one example 

 was dredged, not so perfect as our specimens, nor so large, having the apical whorls 

 broken off, and but 3-^ conserved whorls, measuring 3 - 7 x T9 mm., and numbering only 

 17 costas on body- whorl, as against 22 in our type. On this account he suggests the 

 varietal term major being applied to the South Orkney specimens, of which only two 

 or three examples occurred, dredged from time to time in Scotia Bay. 



Trophon philippianus, Dunker. 



Trophon philippianus, Dkr. ; Mart, and Chem., ed. ii. (W. Kobelt), fol. 279, tab. Ixxii., 



figs. 4, 5. 



,, geversianus (fusus), Gould, in Wilkes' Explor. Exped., p. 228. Var. philippianus, 



Dkr. ; H. Strebel, Zooloyisch. Jahrb., p. 174 (1904). 



(SOY. SOC. EDIN. THANS., VOL. XLVL, 137.) 



