Medusce 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. wyvillei. 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. wyvillei. 



DJ5631, 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. wyvillei 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 is a plain-edged, projecting annular ridge 

 on outer side of ring-furrow, as in A. bairdii. It thus combines characters 

 of A . wyvillei 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. wyvillei 54 mm. wide, cen- 

 tral lens 41 mm. wide, 25 tentacles. 



Dimensions (in mm.) of some specimens of non-typical and typical A. wyvillei, collected by the 



Albatross in the Philippine Islands. 



