172 Papers from the Department of Marine Biology. 
the sting of this medusa is very severe and may even be fatal to man. The 
Dactylometra of the Philippines is also a dangerous form, but Lobonema, which 
some of the members of the Albatross expedition believed to be virulent, is not 
capable of inflicting a very severe sting (see Light, 1914, Philippine Journal of 
Science, vol. 9, pp. 291-295). 
The following is a record of specimens of Chiropsalmus quadrigatus obtained 
by the Albatross in the Philippine Islands: 
Locality. 
Subig Bay, Luzon, caught in a 
Do 
Mausalay, Mindanao 
Point Janelo, Southern Luzon, 
one specimen. 
Tilig Bay, Southern Luzon, one 
specimen. 
Malecochim Harbor, Linapacan 
Island, 7 specimens. 
. . Number of 
Height} Width 
of bell| of bell| tentacles 
. . upon each 
jin mm. : 
EN ae ™.) pedalium. 
Remarks. 
No gastric saccules and no gonads. 
With well-developed but immature 
gonads; large cock’s-comb- 
shaped gastric saccules. 
Immature. The 8 gastric saccules 
sd beginning to appear. 
0. 
Do. 
Apparently mature. 
Immature. Caught in a seine ata 
depth of 150 feet. 
Immature. Caught in a seine ata 
depth of 130 feet. 
Cock’s-comb-shaped saccules. 
Gonads small. 
No saccules. No gonads. 
Cock’s-comb-shaped saccules. 
Gonads small. 
All small. Caught in seines. 
Beach near mouth of Malam- 
paya River, Palawan Island, 
2 specimens. 
Ulugan Bay, Palawan Island, 
near mouth of Baheli River, 
6 specimens. 
Immature. Cock’s-comb-shaped 
saccules. 
Do. 
Do. 
San Miguel Bay, east coast of 
Luzon, 8 specimens. 
se. 
Cock’s-comb-shaped saccules well 
developed. Immature gonads 
very small. Height of sensory 
niche above margin 11.5 mm. 
6,6,6,5 | No gastric saccules and no gonads. 
Smallest Bell more transparent than in 
specimen. adult. Sensory niche 3 mm. 
above margin. 
Bolinao Bay, west coast of 
Luzon, seine 130 feet, 13 
specimens. specimen. 
Genus PERIPHYLLA Steenstrup, 1837. 
Periphylla, SreENsSTRUP, 1837, Acta et Cat. Mus. Hafniensis—Mayer, 1910, Meduse of the 
World, vol. 3, p. 543.—Brownp, 1910, National Antarctic Expedition, vol. 5, Meduse, p. 42. 
GENERIC CHARACTERS. 
Coronate with 4 interradial rhopalia and 12 tentacles, 4 perradial and 8 
adradial. 16 marginal lappets grouped into 4 pairs of rhopalar and 4 pairs of 
tentacular lappets. A deep annular furrow separates the dome-like apex of 
the exumbrella from marginal zone of bell. Between this ring-furrow and the 
lappets is a zone of 16 pedalia, 12 in the tentacular and 4 in the rhopalar radii, 
and these are separated one from another by 16 deep, radiating clefts, which 
extend down the mid-axial lines of the lappets. There are 4 deep, interradial 
subgenital pits in the floor of the subumbrella, lined above their edges by rows 
of internal gastric cirri. The large central stomach extends peripherally out- 
ward into the subumbrella in the 4 perradii. These 4 openings lead into a 
wide ring-sinus in the subumbrella, which in turn sends out a radiating vessel 
