Medusee of the Philippines and of Torres Straits. 177 
D 5493, August 2, 1909, about 5.5 miles off Diuata Point, between Leyte and Mindanao, 
depth 478 fathoms, bottom green mud. 4 specimens of A. wyvillet. The 
largest was 60 mm. wide, central lens 44 wide with indented margin, 22 tenta- 
cles each 21 mm. long. Another medusa was 50 mm. in diameter, central 
lens 29.5, with indented margin and 23 tentacles. Another medusa was 42 
mm. in diameter, central lens 33 mm. wide with distinct radial furrows and 
notched margin, 24 tentacles. The smallest medusa was 31 mm. wide, 
central lens 21 mm. wide with radial furrows and notched margin, 23 tentacles. 
D 5533, August 19, 1909, between Cebu and Siquijor, about 9.5 miles off Balicasag Island, 
depth 432 fathoms, bottom green mud and sand. 1 specimen of A. wyvillet. 
D 5631, December 2, 1909, south of Pariente Strait, about 4.5 miles off Doworra Island, 
depth 809 fathoms, bottom green mud. 1 specimen approaching condition 
of A. alexandri in having no distinct indentations or furrows at the margin 
of the central lens. The dimensions of this specimen are stated in the table. 
D 5650, December 17, 1909, in the Gulf of Boni, about 12.5 miles off Lamulu Point, depth 
540 fathoms, bottom green mud. 1 specimen distorted by pressing upon the 
bottom of the bottle in which it was preserved, so that its specific affinities can 
not be determined with accuracy. The medusa was 60 mm. wide, central lens 
42 mm. wide, with a few faint indentations in its margin. 24 tentacles. 
D 5652, December 17, 1909, in the Gulf of Boni about 7.5 miles off Lamulu, depth 525 
fathoms, bottom green mud. 4 specimens, one of which is 89 mm. wide with 
31 tentacles and is an A. wyvillet approaching the condition of A. alexandri. 
Its dimensions are stated in the table. Another specimen has 5 furrows in the 
margin of its central lens, but there isa plain-edged, projecting annular ridge 
on outer side of ring-furrow, as in A. bairdii. It thus combines characters 
of A. wyvillet with those of A.bairdii. This medusa is 51 mm. wide and has 29 
tentacles. Two other specimens, one 33 and the other 37 mm. in diameter, 
have each 20 tentacles, with the margins of their central lenses notched as in A. 
wyvillei, while they have well-developed annular ridges which project beyond 
the margin of the ring-furrow, resembling A. bairdii in this respect. 
D 5657, December 19, 1909, in the Gulf of Boni, about 15.5 miles off Olang Point, depth 
492 fathoms, bottom gray mud. 1 specimen of A. wyvillet 54 mm. wide, cen- 
tral lens 41 mm. wide, 25 tentacles. 
Dimensions (in mm.) of some specimens of non-typical and typical A. wyvillet, collected by the 
Albatross in the Philippine Islands. 
Forma A. wyvillei 
approaching the Typical Raab ae sboutiting 
condition of A. wyvillei. A idkeandre I aleve 
A. alexandri. 
Locality 
ee ee ey 
D 5652, Dec. 17, 1909, 
Gulf of Boni, depth 
525 fathoms, near 
Lamulu. 
D 5201, Apr. 10, 1908, 
south end of Leyte 
Island, depth 554 
fathoms. 
D 5631, Dec. 2, 1909, 
south of Pariente 
Strait, depth 809 
fathoms. 
D 5471, June 19, 1909, 
off Sialet Point 
Light, east coast of 
Luzon, 568 fathoms. 
91 44 
Diameter of entire medusa....... 89 55 68 
PRhicknessOL Delle case actos osle < 15 26 ae 19 8 
Number of tentacles............ 31 23 23 29 26 
Diameter of central lens of exum- 51 40 45.5 54 25 
brella. , 
Condition of margin of central 
Notched with about 
Notched with 22 ra- 
Only slightly wayy 
Faintly wavy in out- 
lens of exumbrella. 5 more or less dis- dial furrows. in places, no dis- line, no furrows. 
tinct radial furrows. tinct notches. 
Depth of coronal furrow.........| 13 3 SANG 9.5 4 
Length of tentacular pedalia.... .! i 6.5 5.75 8.25 6 
Width of tentacular pedalia...... Go 6 6.75 weo 4.5 
Length of rhopalar pedalia....... 6.5 6.5 6.75 6.25 3.5 
Width of rhopalar pedalia....... 5 5 5.25 5.75 3 
Length of marginal lappets...... 8 Ses Be don 
Length of tentacles............. | 19 13 14 
Diameter to outer ma of ring- | 73 48 56.5 75 39 
muscle of subumbrella. 
Width of subumbrella ring-muscle. | 5.5 3 4 4.5 2.75 
Diameter across zone of gonads. .| 47 28.5 338 | 50.5 25.5 
Dimensions of each gonad (cir- | ae 7X5 Spherical. 
cumferential X radial). | 
Diameter of central stomach..... | 37 21 24 37 18 
Length of manubrium........... 22 22 Dates 
