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



11. Marginella (Persicula) ovulum, SoweTby. 



Marginella ovulum, Sowerby, Thes. Conch., vol. i. pt. 7 p. 401, sp. 102, pL lxxviii. fig. 188. 

 ,, ,, Eeeve, Conch. Icon., vol. xv. pi. xxiii. fig. 129. 



„ (Cryptospira) ovulum, Angas, Port Jackson Moll., Proc. ZooL Soc. Lond., 1867, p. 196, 



No. 62. 

 „ ovulum, Weinkauff, Conch. Cab. (ed. Kiister), p. 116, sp. 171, pL xxii. fig. 4. 



„ {Persicula) ovulum, Tryon, Manual, vol. v. p. 40, pi. xi. fig. 35. 



Station 162. April 2, 1874. Lat. 39° 10' 30" S., long. 146° 37' E. Off East Mon- 

 cceur Island, Bass Strait. 38 fathoms. Sand and shells. 



April 17, 1874. Port Jackson, Sydney. 2 to 10 fathoms. 



Habitat. — Port Jackson and Port Stephen, Australia (Angas). 



12. Marginella {Persicula) sagittata, Hinds. 



Marginella sagitatta, Hinds, Proc. Zool. Soc. Lond., 1844, p. 76. 



Sowerby, Thes. Conch., pt. 7, p. 393, sp. 78, pi. lxxviii. figs. 223, 224. 

 ,, ,, Reeve, Conch. Icon., voL xv. pi. xv. fig. 70. 



„ „ "Weinkauff, Conch. Cab. (ed. Kiister), p. 57, sp. 73, pi. x. figs. 13, 16. 



„ (Persicula) sagitatta, Tryon, Manual, vol v. p. 39, pi. xi. fig. 31. 



Station 113a. September 1, 1873. Lat. 3° 47' S., long. 32° 24' 30" W. Anchorage 

 off Fernando-Noronha. 7 to 25 fathoms. Volcanic sand and gravel. 



Habitat. — Brazil (Hinds), Bahamas, Caribbean Sea, Australia (Tryon). 



13. Marginella (Gibberula) guancha, D'Orbigny. 



Marginella guancha, D'Orbigny in Webr and Ber;c, Moll. Canaries, p. 88, No. 125, pi. vL figs. 32-34. 

 Weinkauff, Conch. Cab. (ed. Kiister), p. 131, sp. 202 (no fig.) 

 ,, (Persicula) guancha, Tryon, Manual, vol. v. p. 41, pi. xi. fig. 42. 



February 10, 1873. Tenerife. 70 fathoms. 



Habitat. — Tenerife (D'Orbigny). 



Weinkauff (loc. cit. supra, and p. 124, under Marginella occulta, Monterosato), indicates his 

 disbelief in the difference between this and Monterosato's Mediterranean species, though why on that 

 supposition he should figure Marginella occulta and not D'Orbigny's much older species is not obvious. 

 They are really quite different. D'Orbigny's species I have from M' Andrew, and from my own 

 dredgings, while the Marquis de Monterosato kindly sent me specimens of Marginella occulta. 

 Marginella guancha (which is very badly figured in d'Orbigny) compared to the other, is much 

 more tumid above, slightly angulated both above and below, with a certain straightness of profile 

 between the two angulations. Even in the youngest shells there is a thickening of the inner 

 lip which is entirely absent in Marginella occulta. The whole outer lip is much larger and stronger, 



