EEPOET ON THE GASTEROPODA. 153 



none of the hollow squamous spines which ornament the earlier whorls ; the embryonic whorls of 

 the apes are a good deal alike ; but the cone in Murcx macgillivrayi is smaller and less regular, its 

 whorls being more rounded and parted by a deeper suture. In these respects the apex resembles 

 Murcx aduncospinosus, Beck, from which it manifestly differs widely in other ways. In the hollow 

 squamous spines of the earlier whorls it resembles Murcx ternispina ; but the arrangement of these 

 is different, and the embryonic apex of that species is utterly diverse. Murcx cdbritii, Bernardi 

 (Journ. de conch., vol. vii., 1858, p. 301, pi. x. f. 3), has a considerable general resemblance, but is 

 not angularly carinated above, has not a scalar spire, has a shorter and coarser apex, has 4 {teste 

 Bernardi, but his figure and Sowerby, in his "Thesaurus," pt. 33, p. 2, pi. cccxciii. f. 137, both in 

 text and figure, say 3) intervarical ribs, and the spirals are much coarser and less sharp. 



8. Murex (Haustellum), sp. 



Murex (Pteronotus), sp. (Murex dentifer, n. sp. V), Watson, Prelim. Eeport, pt. 15, Journ. Linn. Soc. 

 Lond., vol. xvi. p. 601. 



Station 194. September 29, 1874. Lat. 4° 34' S., long. 129° 57' 30" E. S.W. 

 of Papua. 200 fathoms. Volcanic mud. 



This is a massive full-grown (?) shell, which in my list I have called Murcx dentifer, as a new 

 species, but which is in too bad condition for detailed description. It certainly is not in the British 

 Museum, nor is it figured so far as I know. It is not unlike in shape to the immature shell of 

 Murex imperialis, Swains., from California ; but its snout seems to have been long, and was certainly 

 narrow. It has 3, not 5 varices (which are rounded, high, narrow, and continuous from whorl to 

 whorl), with 4 (or on the last segment 6) biggish rounded ribs between the varices ; the old mouth- 

 edges on the front of the varices are not like saw-teeth, but smooth and continuous ; the mouth is 

 small, oval, not large ; the lip is not internally thickened ; and the surface is marked with regular 

 strong spiral threads and with fine regular lines of growth, and is not squamously fine-grained. The 

 outer lip is scored with long, sharpish, but fine teeth ; the inner lip is closely set with teeth, which 

 are short and strong on the pillar, feeble and a little longer on the body, with a round tubercle at 

 the very top ; there is a broad glaze on the body, which separates and stands out as a strong lamina 

 on the pillar, with a deep umbilical cleft behind it. It is very near Murex haustellum, Linn., but the 

 ribbing between the varices is different, and the inner lip is toothed on the body. 



9. Murex {Cliicoreus) calcar, Kiener. 



Murex calcar, Kiener, Iconog. coq. viv., p. 107, sp. 81, pi. xxxvL fig. 2. 



„ Senegalensis, var., Sowerby, Conch. Must., fig. 01. 



„ calcar, Reeve, Conch. Icon., vol. iii. pL xxiv. fig. 100. 

 „ „ Kiister, Conch. Cab. (ed. Ktister), p. 67, sp. 66, pi. xxiv. fig. 7. 



„ (Cliicoreus) calcar, Kobelt, Jahrb. d. deutsch. malak. Gesellsch., 1877, vol. iv. p. 152. 



,, calcar, Sowerby, Thes. Conch, pts. 33, 34, p. 7, sp. 26, pi. ccclxxxiii. (iv. Gen.) fig. 36. 



,, (Cliicoreus) Senegalensis, var. calcar, Tryon, Manual, voL ii. p. 94, pi. xvii. fig. 169. 



(ZOOL. CHALL. EXP. — PART XLII. — 1885.) Tt 20 



