REPOET OX THE PTEROPODA. 
85 
Station 122, September 10, 1873 ; off the coast of South America,, between Pernam- 
buco and Bahia; lat. 9' 5' S., long. 34° 50' W.; depth, 350 fathoms; bottom, red 
mud. 
Station 185, August 31, 1874 ; off Raine Island; lat 11° 35' 25" S., long. 
144' 2' 0" R; depth, 135 fathoms; bottom, coral sand. 
*8. Cavolinia injlexa (Lesueur). 
1813. Hyalxa injlexa, Lesueur, Memoire sur quelques animaux mollusques, &c., Xouv. Bull. 
Soc. Philom., t. iii. p. 285, pi. v. fig. 3. 
1821. Hyalxa elongata, Lesueur, MS., in de Blainville, Hyale, Diet. d. Sci. Hat., t. xxii. p. 82. 
1835. Hyaleea vagindlina, Cantraine, Bull. Acad. d. Sci. Bruxelles, t. ii. p. 380. 
1836. Htjalaza labiata, d’Orbigny, Voyage dans lAmerique meridionale, t. v. p. 104, pi. vi. 
figs. 21-25. 
1836. Hyalxa vneinata, Hoeninghaus, MS., in Philippi, Enumeratio Molluscorum utriusque 
Sicilise, p. 101, pi. vi. fig. 18 ( non Rang). 
1880. Ilgaloea imiians, PfefEer, Die Pteropoden des Hamburger Museums, Abhandl. Naturw. Ver. 
Hamburg, Bd. vii. p. 90, pi. vii. fig. 9a. 
For description and figures, see Boas, Spolia atlantica, p. 123, pi. i. fig. 11; pi. ii. 
fig. 21. 
It is not possible to admit the specific separation of the forms labiata and 
injlexa, which are linked to one another by gradual transitional forms (Boas, loc. cit., 
pi. vi. fig. 98). It is more natural to regard them simply as local varieties, though 
it must be noted that they are not always respectively confined to distinct localities, 
but may occur together, as for instance in the Indian Ocean. 
Habitat . — Atlantic Ocean ; from 41° 35' N. (Boas) to 40° S. (Knocker), towards both 
Old and New Worlds ; Mediterranean. 
Indian Ocean ; from the Gulf of Bengal (Pfeffer) to 42° S. (Benson), from the coast 
of Africa (Zanzibar) to Australia. 
Pacific Ocean; western portion, Strait of Corea, China Sea (Boas), Port Jackson 
(Angas) ; eastern portion from 13° N. to 42° S. 
Challenger Specimens. — I. Living. 
Station 142, December 18, 1873; Cape of Good Hope to 46° S.; lat. 35° 4' S., 
long. 18° 37' R 
Station 143, December 19, 1873 ; Cape of Good Hope to 46° S.; lat. 36 48' S., 
long. 19° 24' E. 
Station 175, August 12, 1874 ; off the Fiji Islands ; lat. 19° 2' S., long. 177 10' E. 
Station 181, August 25, 1874 ; Fiji to Rame Island ; lat. 13° 50' S., long. 151 49' E. 
Near Station 230, April 4, 1875 ; Admiralty Islands to Yokohama; lat. 25 33' N., 
long. 137° 57' E. 
