APPENDIX—MOLLUSCA. 561 
PreROSOMA PLANA, Lesson. 
Hedley, Proc. Malac. Soc., i., 1895, p. 333; Crosse, Journ. de 
Conch., xliv., 1896 (1897), pp. 207 - 212. 
An imperfect shell from a depth of 200 fathoms off Tutaga Islet, 
is with doubt so identified. Since writing the article above quoted 
Ihave found that Fischer’s reason for classing this as a Nemertine 
was a mistaken identification by the Naturalists of the ‘“Chal- 
lenger.”* 
ATLANTA GIBBosa, Hydoux and Souleyet. 
Eydoux and Souleyet, Voy. Bonite, Zool., ii., 1841, p. 386, pl). xxi, 
figs. 1 — 8. 
Dead shells were dredged off Tutaga, in 45—52 and 200 
fathoms. This species does not seem to have been recorded from 
the Pacific. 
ATLANTA TURRICULATA, D’Orbigny. 
Eydoux and Souleyet, Joc. cit., p. 391, pl. xxi., figs. 30 - 35. 
Dredged off Tutaga Islet in 45 —52 and 200 fathoms. 
ATLANTA GUIDICHAUDU, Hydoux und Souleyet, 
Eydoux and Souleyet, Joe. cit., p. 397, pl. xix., figs. 29 - 34. 
Several dead shells dredged in 200 fathoms off Tutaga Islet. 
TORNATINA LEPTEKES, Watson. 
Pilsbry, Man. Conch., xv., 1893, p. 200, pl. xxiv., figs. 29, 30. 
Dredged in 36 fathoms north of Pava Islet, and off Tutaga in 
45 —52 and 200 fathoms. 
Previously taken off Raine Island, Queensland, by the 
“ Challenger,” 
RINGICULA, sp. 
A small Ringicula was dredged in 45 —52 fathoms off Tutaga 
Islet. It corresponds exactly to specimens from Torres Straits, 
which I have identified as P. pusilla, Watson, and differs very 
little from my &. parvula. It may be here pointed out that the 
illustration of FR. pusilla,t appears to represent a young and 
broken shell, and that the description conveys a totally different 
idea of the species. 
* Moseley—Ann. Mag. Nat. Hist., (4) xvi., 1875, p. 382. 
+ Watson—Chall. Rep., Zool., xv., 1886, pl. xlvii., fig. 9. 
Mu 
