REPOET ON THE PTEROPODA. 
57 
# 6. Clio ( Styliola ) subula (Quoy and Gaimard). 
1825. Styliola recta, Lesueur, in de Blainville, Manuel de Malacologie, p. 655 {nomen tantum). 
1827. Cleodora subula, Quoy et Gaimard, Observations zoologiques faites a bord de l’Astrolabe, 
&c., Ann. d. Sci. Nat., ser. 1, t. x. p. 233, pi. viii. d. figs. 1-3. 
1828. Creseis spinifera, Rang, Notice sur quelques Mollusques nouveaux du genre Cleodora, 
&c., Ann. d. ScL Nat., ser. 1, t. xiii. p. 313, pi. xvii. fig. 1. 
1828. Creseis subula. Rang, Ibid., pi. xviii. fig. 1. 
1836. Hyalxa subxda, d’Orbigny, Voyage dans l’Amerique meridionale, t. v. p. 119, pi. viii. 
figs. 15-19. 
1850. Styliola subula, Gray, Catalogue of the Mollusea in the Collection of the British Museum, 
pt. ii., Pteropoda, p. 17. 
1852. Cleodora subulata, Souleyet, Voyage de la Bonite, Zoologie, t. ii. p. 191, pi. viii. figs. 5-9. 
For description and figures, see Souleyet ( loc . cit. supra). 
Habitat . — Atlantic Ocean; from 41° N. to 25° S. (Pfeffer), towards the coasts both 
of the Old World and of America (Antilles, &c.); Mediterranean, Naples, &c. The empty 
shells have been dredged at numerous localities in the Mediterranean (Tunis, &c.). 
Indian Ocean; southern portion, from 17° 20' S. to 38° 28' S. (Boas); on the coasts 
of Africa (Zanzibar, Port Natal), and towards Australia. 
Pacific Ocean ; eastern portion, Malay Archipelago (Amboina, New Guinea), east 
coast of Australia to 32 S. (Pfeffer, Angas); western portion, from 23° N. to 35° S. 
Boas has remarked 1 the absence of this species below the equator, and notes the 
same in regard to Cavolinia gibbosa. This has been noticed in regard to other Molluscs, 
as I have remarked for instance in regard to Lassea rubra. 2. It is, however, less 
explicable in the case of Molluscs which can shift their ground so readily as the 
Pteropods. But as a matter of fact, Clio subaki is found in the Pacific Ocean both to 
the south and to the north of the equator. 
Challenger Specimens. — I. Living specimens. 
Near Station 160, March 15, 1874; off Melbourne ; lat. 39° 45' S., long. 140° 40' E. 
Near Station 160, March 16, 1874; off Melbourne ; lat. 39° 22' S., long. 142° 27' E. 
Station 164a, June 13, 1874 ; off Sydney; lat. 34° 9' S., long. 151° 55' E. 
Station 175, August 12, 1874 ; Fiji to Raine Island; lat. 19° 2' S., long. 1 77° 10' E. 
Station 181, August 25, 1874 ; Fiji to Raine Island; lat. 13° 50' S., long. 151° 49' E. 
Near Station 230, April 3, 1875; Admiralty Islands to Yokohama; lat. 26° 29' N., 
long. 138° 34' E. 
On April 4, 1875 ; Admiralty Island to Yokohama; lat. 25° 33' N., long. 137° 57' E. 
Station 251, July 10, 1875; Yokohama to Sandwich Islands; lat. 37° 37' N., 
long. 163° 26' W. 
Station 254, July 17, 1875 ; Yokohama to Sandwich Islands; lat. 35° 13' N., 
long. 154° 43' W. 
1 Spolia atlantica, p. 66. 2 Sur l’aire de dispersion de Lassea rubra, Bull. Scient. Nord, 1886, p. 235. 
(ZOOL. CHALL. EXP. — PART LXV. — 1887.) Ttt 8 
