82 
THE VOYAGE OF H.M.S. CHALLENGES. 
times going and returning, I have not found in the Challenger collection a single 
Atlantic specimen of Cavolinia globulosa. 
Challenger Specimens. — Living specimens. 
Near Station 213, February 7, 1875; at Samboangan ; lat. 5° 59' N., long. 123° 38' E. 
Station 216 a, February 16, 1875; north of New Guinea; lat. 2° 56'N.,long. 134° ll'E. 
# 5. Cavolinia gibbosa (Rang). 
1836. Hyalxa gibbosa, Rang, MS., in d’Orbigny, Voyage dans l’Amerique meridionale, t. v. 
p. 95, pi. v. figs. 16-20. 
1836. Hyalxa flava, d’Orbigny, Ibid., p. 97, pi. v. figs. 21-25. 
1880. Hyalxa gegenbauri, Pfeffer, Die Pteropoden der Hamburger Museums, Abbandl. Naturw. 
Ver. Hamburg, Bd. vii. p. 86, figs. 5, 7. 
For description and figures, see Boas, Spolia atlantica, p. 109, pi. i. fig. 6 ; pi. ii. 
fig. 17. 
Habitat. — Atlantic Ocean; from 43° 10' N. to 38° 16' S., from the coasts of America 
to those of the Old World ; Mediterranean, Messina, &c. 
Indian Ocean; southern portions, 22° S. (Boas) to 41° S. (Pfeffer), from Africa 
(Madagascar, Natal) to Australia. 
Pacific Ocean ; western portion, Yellow Sea (British Museum), China Sea (Boas), 
16° N., 165° E. (“Vettor Pisani” Expedition),' Port Jackson (Angas), off Tahiti (Knocker) ; 
South-east Pacific (“Galathea” Expedition). 
Challenger Specimens. — I. Living specimens. 
’ Station VIIf., February 2, 1873; off Madeira; lat. 32° 27' 0"N., long. 16° 40' 30" W. 
Between Stations 162 and 163, April 3, 1873; Melbourne to Sydney; lat. 38° 7' S., 
long. 149° 18' E. 
Station 230, April 5, 1875 ; Admiralty Island to Yokohama; lat. 26° 29' N., 
long. 137° 57' E. 
Station 249, July 7, 1875: Yokohama to Sandwich Islands; lat. 37° 59' N., 
long. 171° 48' W. 
August — September 1875 ; Sandwich Islands to Tahiti. 
II. Deposit shells. 
Station 23, March 15, 1873; off Sombrero Island; lat. 18° 24' N., long. 63° 28' W.; 
depth, 450 fathoms ; bottom, Pteropod ooze. 
Station 24, March 25, 1873; off Culebra Island; lat. 18° 38' 30" N., long. 65° 5' 30" 
W.; depth, 390 fathoms; bottom, Pteropod ooze. 
Station 70, June 26, 1873; Bermuda to Azores; lat. 38° 25' N., long. 35° 50' W.; 
depth, 1675 fathoms; bottom, Globigerina ooze. 
Station 78, July 10, 1873 ; off the Azores; lat. 37° 26' N., long. 25° 13' W.; depth, 
1000 fathoms; bottom, volcanic mud. 
