SYSTEMATIC iS5 



The protoconch is paucispiral, asymmetrical, with almost straight-sided whorls, the top flattened, 

 tilted, and slightly inrolled. The present material has the spiral sculpture slightly stronger than shown 

 in Strebel's figure. 



Trophon minutus (Strebel ms.) Melvill & Standen 



Trophon minutus (Strebel ms.) Melvill & Standen, 1907, p. 107, pi. 1, figs. 7, ~ja. 

 Trophon minutus Strebel, 1908, p. 44, pi. 4, fig. 47a, b. 

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



Type localities. Scotia Bay, South Orkneys, 9-15 fathoms (Melvill & Standen); South Georgia, 

 24-52 m. (Strebel). 



St. 190. Bismark Strait, Palmer Archipelago, 64 56' S, 65 35' W, 93-130 m. (one example). 



Trophon poirieria n.sp., PI. IX, fig. 51 



Shell small, thin, white, angulate-fusiform, tall spired, sculptured with distant upwardly produced 

 hollow spines. Whorls 6, including the usual asymmetrical paucispiral smooth protoconch of i| whorls. 

 Spire taller than height of aperture plus canal. Whorls angled just above the middle and sculptured with 

 upwardly inclined and recurved hollow peripheral spines, seven on the penultimate and 10 on the body- 

 whorl. Surface smooth except for axial growth lines connected with the peripheral spines. Aperture 

 broadly ovate but produced below into a relatively long, narrow, oblique and recurved anterior canal. 



Height 15-5 mm.; diameter 875 mm. (holotype, St. 190). 



Type locality. St. 190. Bismark Strait, Palmer Archipelago, 64 56' S, 65 35' W, 24 Aug. 1927, 

 93-130 m. 



St. 170. Off Cape Bowles, Clarence I., South Shetlands, 6i° 25' 30" S, 53 46' W, 23 Feb. 1927, 342 m. 



The species is so named on account of its resemblance to the New Zealand genus Poirieria. It is 

 apparently nearest allied to Trophon conlmatiensis Smith, 1907, but lacks both the longitudinal develop- 

 ment of the axial lamellae and the surface striations of that species. 



Trophon declinans Watson 



Trophon declinans Watson, 1882, p. 388. 



Trophon declinans Watson, 1886, p. 168, pi. 10, fig. 10. 



Type locality. Off Marion I., 46 48' S, 37 49' 30" E, 69 fathoms. 



St. 1563. Off Marion I., 46 48-4' S, 37° 49-2' E, 7 Apr. 1935, 113-99 m - 



St. WS 228. North-east of Falkland Is., 50° 50' S, 56° 58' W, 30 June 1928, 229-236 m. 



Tomlin (1948, p. 228) recently recorded declinans from 69 m. off Macquarie Island, but this material 



now before me is of an angulate species with the addition of spiral sculpture. It closely resembles 



pelseneeri Smith, 191 5. 



Trophon cuspidarioides n.sp., PI. IX, fig. 50 



Shell small, fusiform, with a rather short spire but a disproportionately long, flexed and recurved 

 anterior canal. Whorls about 5 1, including the protoconch, which is damaged in both examples, but 

 evidently paucispiral. Spire 0-4 time height of aperture plus canal, slightly shouldered at two-thirds 

 whorl height. Sculpture defaced on spire whorls but on the body-whorl there are five ill-defined, blunt 

 spiral cords, first at the shoulder angle, second between the shoulder and the lower suture, third level 

 with the top of the aperture, fourth and fifth on the base, the fifth almost obsolete. Axials irregular, 

 mostly weak and fold-like, about twenty-five on the body-whorl. Actual aperture ovate but produced 

 below into a very long flexed and recurved anterior canal, very little tapered and with a blunt termina- 



