IS2 DISCOVERY REPORTS 



Range. Southern Chile and Argentina, Strait of Magellan, Tierra del Fuego and Falkland Is., 

 o-ioo m. Recorded also bv Melvill & Standen (1907, loc. cit.) from Scotia Bay, South Orkneys, 9-10 

 fathoms, but this record probably refers to the new species echinolamellahis described following. 



Dentition. Fig. L, 81, p. 194. The central tooth has three massive cusps, the middle one tallest, 

 two very weak intermediates which appear as offshoots from the inner faces of the outer cusps and 

 upturned projections at the extremities of the basal plate which may serve as cusps also. Protoconch. 

 Fig. N, 107, p. 196. 



Trophon philippianus Dunker 



Fusus intermedins (Gay) Hupe, 1854, p. 166, pi. 4, fig. 6 (non Fusus intermedins Cristofori & Jan., 1832 or 



Michelotti, 1846). 

 Trophon philippianus Dunker, 1878, p. 277, pi. 72, figs 4, 5. 



Fusus intermedins Tryon, 1880, pi. 70, fig. 433 (reproduction of Gay's pi. 4, fig. 6). 

 Trophon intermedins Rochebrune & Mabille, 1889, 53. 

 Trophon geversianus philippianus Strebel, 1904a, p. 174, pi. 8, fig. 8ia-d. 

 Trophon philippianus Melvill & Standen, 1907, p. 107. 

 Trophon philippianus Melvill & Standen, 1912, p. 354. 



Type locality. Strait of Magellan. 

 St. WS 834. Off Strait of Magellan, 52 57' 45" S, 68 : 08' 15" W, 2 Feb. 1932, 27-38 m. 



Range. Strait of Magellan ; Falkland Is. ; Burdwood Bank, South of Falkland Is., 56 fathoms (Melvill 

 & Standen, 1912, loc. cit.). 



This species lacks the lamellate axials of geversiantis, but more material than I have at hand may show 

 that Strebel was correct in considering philippianus as merely a subspecies of geversiantis. Both forms 

 are present in a small series of littoral shells I have from Port Stanley, Falkland Islands. 



Trophon echinolamellatus n.sp., PL IX, figs. 44, 45 



Shell large, fusiform, strongly sculptured with sharply raised spiral cords crossed by closely spaced 

 lamellae produced into hollow recurved spines at the points of intersection. Whorls six including the 

 last whorl of a small protoconch, much eroded in only available material. Spire tall, 0-83 of height of 

 aperture plus canal. Sculptured with fairly prominent fiat-topped spiral cords with interspaces mostly 

 of about the same width as the cords. They number four on the first and second post-nuclear whorls, 

 six on the penultimate and twelve on the body-whorl and base, those on the base having somewhat 

 wider interspaces. All the post-nuclear whorls are crossed by numerous thin lamellae which are 

 developed into sharp recurved hollow spines wherever they cross the spiral cords. There are about 

 twenty-two axial lamellae on the penultimate and about twenty on the body-w r horl, but they are 

 irregularly disposed. In addition, the surface is scored by weak spiral striations, even on the cords, 

 but not on the actual spines. Aperture ovate, produced below into a short obliquely recurved anterior 

 canal. Fasciole as a high, narrow, spiral ridge imbricated with numerous hollow spines. Outer lip 

 dilated into a polished recurved rim which is crenulated and scalloped along its outer edge by the 

 effect of the surface sculpture. Inner lip, a moderately wide smooth callus with a well-marked, almost 

 free edge. Colour cinnamon-buff to orange-cinnamon with traces of a spirallv zoned pattern in 

 slightly darker or more reddish brown ; upper zone occupying most of the upper portion of the bodv- 

 whorl, middle zone much narrower and lowest zone on the fasciole. 



Height 63 mm.; diameter 35 mm. (holotype). 



Height 64 mm. ; diameter 39 mm. (paratype). 



Type locality. St. 170. Off Cape Bowles, Clarence I., 6i° 25' 30" S, 53 46' W, 23 Feb. 1927, 

 342 m. 



