MAEINE MOLLUSCA OF MADEIRA. 243 



tall.isli scalar spire, spinous whorls, a small but coarse tip, a 

 shortisli base, and a flattened snout. Sculpture — Longitudinals : 

 there are no varices, but on each whorl 7 to 8 quite distinct 

 rounded ribs, which are made prominent by the small, open, 

 internally imbricated, upturned prickles, of which a prominent 

 series crowns each whorl at its shoulder a little below the suture ; 

 others similar, but smaller, crest each spiral as it crosses the 

 successive longitudinals ; the whole surface is covered with sharp, 

 thin, continuous forward-facing laminse, not close-set but some- 

 what crowded and imbricated on the crest of the ribs. Spirals : 

 there are 5 to 6 well-marked spiral threads on the last whorl, 

 about 3 on the penultimate, and 2 on the earlier whorls ; the 

 first, which forms the shoulder, lies a little remote from the 

 suture ; the twisted snout is scored by the strong-vaulted old- 

 canal scars. Colour pale slightly ruddy brown, paler on the 

 tip and on the spines. Spire rather high, conical, subscalar. 

 Apex is small, but not fine nor sharp ; it consists of 1| whorls, 

 which in very young and perfect specimens appear faintly ribbed ; 

 the extreme tip is semi-immersed. Whorls 7 to 8 in all ; they 

 are flattened and very slightly declining from the suture to the 

 shoulder, from below which they are rounded and contracted on 

 the base to the somewhat small flattened and triangularly-shaped 

 snout, the point of which is slightly reverted and emarginated. 

 Suture indistinct. Mouth nai-rowly oval, rounded and patulous 

 above; in front there is a rather narrow, oblique, open canal. 

 Outer lip barely patulous, well arched, thin on the edge ; within 

 it has a feeble varix near the edge with 5 to 6 rounded but rather 

 feeble teeth. Inner lip with a slightly projecting thin edge ; it 

 forms a continuous curve across the body and then straight down 

 the pillar, the point of which is cut off" abruptly and obliquely at 

 the canal, over which the edge projects sharply but without 

 closing it in; between this edge and the old canal-swellmg is a 

 very slight and open furrow. — H. 0"6. B. 0"3. 



Not common. Madeira, Punta de Lourengo to 50 fms. ; Magda- 

 lena (dredged) ; Selvagem Grande, shore {Lowe, Watson). 



This species somewhat resembles Trophon Lowei, Wats., but 

 the shape of the whorls, of the apex, and of the mouth, as well as 

 the sculpture and colour, are diff"erent. Murex cristatus, Broc, 

 resembles it most, but is narrower and diff"ers in shape of whorls, 

 in sculpture, and in colour. 



