596 EET. E. BOOG WATSON ON THE 



Murex seemed suggested by the peculiarity of shape, by the almost 

 total absence of teetb on botb. lips, and by tbe length and straigbt- 

 ness of the distorted snout, features more or less present in various 

 species, but especially in M. {Haustelkim) elegans, Beck, M. (jET.) 

 trilineatus, Eeeve. But in all the species of tbat group the distor- 

 tion of the snout is, I tbink, to the rigbt, instead of, as bere, to the 

 left. In the end I have followed the advice of Dr. Kobelt, feeling his 

 opinion confirmed by the form of the apex and by the texture of 

 the shell, in both of which points it resembles Nassaria. I am not 

 aware that any species of that genus has been described as having 

 an epidermis ; but, unless there be cases where it is certain that no 

 epidermis exists, its existence may be taken for granted: its 

 absence is often due to remorseless cleaning of specimens for the 

 market. The operculum is somewhat unlike that of Nassaria, 

 and combines the characters of Piirpttra, Biiccinum, and Typhis, 

 though here again ordinary representations are untrustworthy, 

 especially in the case of species whose opercular nucleus is at 

 or near the edge. In these cases the body of the animal gradu- 

 ally separates from the old part of the operculum, which is then 

 apt to be abraded, and thus to present features strangely unlike 

 those of specimens which are young, or which come from deep 

 and quiet water. 



Fam. MuRiciD^, TroscJiel. 

 MuREX, Linn. 



1. Murex {Trihulus) acanthoste- 

 phes, n. sp. 



2. M. (T. ) acanthodes, n. sp. 



3. M. {Pteronotus) Cordismei, n. sp. 



4. Murex (Pteronotus),sip. (n. sp.?). 



5. M. (Ocinebra) pholidotus, n. sp. 



6. M. [0.) pyrrhias, n. sp. 



7. M. {0.) pauper, n. sp. 



Typhis, Montf. 

 T. phillipensis. 



1. MUEES (TeIBTJLUS) ACAKTHOSTEPHES, n. sp. (aKaydoarecpi'is, 



prickle-crowned . ) 



St. 188. Sept. 10, 1874. Lat. 9° 59' S., long. 139° 42' E. 

 W. of Cape York ; ofl:' S.W. point of Papua. 28 fms. Mud. 



Shell. — Thinnish, ashy white, globose, with a short scalar spire, 

 spinous whorls, a largish smooth waxy irregularly tipped apex 

 (which is quite overtopped by the spines from the outer lip up- 

 ward), an oval mouth, deeply crenulated outer lip, short rounded 

 base, and a very fine produced almost straight long-spined snout. 

 Sculpture. Longitudinals — there are on each whorl 3 narrow 



