160 THE VOYAGE OF H.M.S. CHALLENGER. 



rounded threads parted by furrows of the same breadth as the threads, but in which 

 often a smaller thread occurs ; the front of the snout has a strongish twisted cord 

 scored with the old canal-edge scars. Colour : the specimen is bleached. Spire high, 

 conical, subscalar. Apex small. Whorls 7 to 8 ; they are conical and shouldered 

 above, bluntly angulated and cylindrical below. Suture a very slightly impressed line 

 in the broad rounded furrow of the whorls' meeting. Mouth oblong to subrhomboidal, 

 pointed and slightly channelled above ; the canal in front is open and somewhat curved. 

 Outer lip thickened by the external varix, but bevelled off to a narrow edge, with 7 

 longish small teeth within ; not patulous ; it is flatly arched, and is at the canal angu- 

 lated. Inner lip short, arched, expanded, with two small tubercles in front, and a very 

 slight umbilical depression behind it ; obliquely and curvedly cut off by the canal. H. 1 in. 

 B. 0-52. Penultimate whorl, height 0-2. Mouth, height 0'6, breadth 0'27. 



This species is represented by one specimen, in poor condition. It is somewhat like the young, 

 or even some of the elongated forms of Murex (Pseudomurex) meyendorfii, Calc. ; but it is more 

 attenuated, with a less-impressed suture, longer body-whorl, stronger and straighter ribs, and much 

 more delicate spirals. 



22. Murex (Pseudomurex) fusulus, Brocchi. 



Murex fusulus, Brocchi, Conch. Foss. Subappen., 1st ed., p. 209, 2d ed. voL ii. p. 199, pi. viii. fig. 9. 



„ . „ Defrance, Diet. sci. nat., vol. xlv. p. 544. 

 Murex spades, Libassi, Conch. Foss. Palerm., p. 43, pi. i. fig. 29. 

 Pseudomurex sipadoe, Monterosato, Conch. Foss. Monte Pellegrino, &c, p. 33. 

 Murex fusulus, Bellardi, Moll. Terr. Terz. Piedmonte, &c, vol. i. p. 169, pi. xii. fig. 4. 

 Pseudomurex sj>adce, Monterosato, Enumeraz., p. 42. 

 Murex pyrrhias, "Watson, Prelim. Report, pt. 15, Journ. Linn. Soc. Lond., 1883, vol. xvi. p. 603. 



Station 75. July 2, 1873. Lat. 38° 38' N., long. 28° 28' 30" W. Fayal, Ajzores, 

 450 to 500 fathoms. Volcanic mud. 



Habitat. — Madeira (my dredgings), Mediterranean ; Corsica, Sardinia, Algeria, 

 Palermo, 35 fathoms (Monterosato). 



Fossil. — From the Upper Miocene of Northern Italy (Bellardi). 



Shell. — Thinnish, white, oblong-fusiform, subscalar, with a moderate spire, a small 

 chestnut-coloured tip, a short rounded base, and a small snout. Sculpture : Longitudi- 

 nals — there are no varices ; but somewhat narrow, rounded, tumid ribs, about 9 on each 

 whorl, run continuously from the apex to the point, but become very slight on the base ; 

 their intervening furrows are broad, shallow, and rounded : the whole surface is scored 

 by very small lamella, which rise in vaulted scales ; in the minute interstices of these 

 there are very slight puckerings. Spirals — there is an angulation about the middle of 



