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



threads ; the front of the snout is obliquely crossed by about 1 5 stronger and more regular 

 threads. Colour subpellucid white under a very thin yellowish smooth epidermis. Spire 

 short and broad. Apex bluntly mamillate, not elevated, but rising a little on one side. 

 Whorls nearly 6, convex, rounded above, sloping below. Suture a little impressed and 

 strongly marked. Mouth oblong, somewhat oblique, rather large, pointed above, pro- 

 longed into a longish, open, truncated, but not emargiuated canal. Outer lip thin, sharp, 

 regularly curved, quite straight above, where it is slightly and widely hollowed back on 

 the edge, prominent and patulous below, a little pinched in at the canal. Inner lip 

 scarcely convex above, and very little concave at the base of the pillar, which is some- 

 what oblique and direct ; there are four oblique, rather strong teeth, of which the two in 

 the middle are the strongest ; a very thin, narrow, definite-edged glaze extends down the 

 edge of the mouth. H. CC57 in. B. 03. Penultimate whorl, height 0*1. Mouth, height 

 0-39, breadth 01 2. 



Without the animal it is, of course, not easy to distinguish between this form and Admete, but 

 the apex is larger and the pillar-teeth stronger than they are in that genus. The generic features 

 are well marked in this species, which, however, resembles no other known to me. 



5. Marginella, Lamarck, 1799. 

 Species. 



1. Marginella fulminata, Kiener. 8. Marginella (Glabella) brachia, n. sp. 



2. Marginella (Glabella) musica, Hinds. 9. Marginella (Glabella) alta, n. sp. 



3. Marginella (Glabella) turbinata, Sow. 10. Marginella (Glabella) elata, n. sp. 



4. Marginella (Glabella) pachia, n. sp. 11. Marginella (Persicula) ovulum, Sow. 



5. Marginella (Glabella) agapeta, n. sp. 12. Marginella (Persicula) sagittata, Hinds. 



6. Marginella (Glabella) chrysea, n. sp. 13. Marginella (Gibberula) guancha, D'Orb. 



7. Marginella (Glabella) valida, n. sp. 14. Marginella (Gibberula) miliaria, Linne. 



15. Marginella (Granula) agger, n. sp. 



1. Marginella fulminata, Kiener. 



Marginella fulminata, Kiener, Iconog., p. 33, sp. 45, pi. xii. fig. 1. 

 ,, ,, Eeeve, Conch. Icon., vol. xv. pi. xiii fig. 54. 



,, „ "Weinkauff, Conch. Cab. (ed. Kuster), p. 67, sp. 85, pi. xii. figs. 10, 11. 



„ ,, Tryon, Manual, vol. v. p. 19, pi. v. fig. 78. 



September 14-2G, 1873. Bahia. 7 to 20 fathoms. 

 Habitat. — Brazil (Kiener). 



