1 L36 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
The manubrium is wide and shallow, with a four-cornered mouth, and simple lips. There are 
numerous short, simple, unbranched gastric cirri, in crescent-shaped areas, at the four interradial 
corners of the stomach. 
The central stomach gives rise to 4 radial pouches, which extend out into the substance of the bell. 
These pouches are incompletely separated one from another by 4 narrow interradial septse, which extend 
from the interradial corners of the stomach to near the basal stalks of the pedalia. 
The gonads are leaf-like, are attached to the sides of the interradial septse, and extend from the 
corners of the central stomach to within 8 mm. of the level of the velarium. 
In medusae preserved in formalin the flexible shafts of the tentacles are slightly pink, the eye 
spots are dark brown, and the gonads are milky yellow. The gelatinous substance of the bell is thin 
and hyaline, but of fairly rigid consistency. 
This medusa resembles in some respects the form figured and briefly mentioned by Semper (1863) 
from the Philippine Islands. It is distinguished from Semper’ s medusa, however, by the very short 
basal stalks, and the different shape of the spatula-like “wings” of the pedalia. It can readily be 
distinguished from C. rastonii in all stages by its high, narrow bell, and wholly different pedalia. Also 
in C. rastonii the gonads are seen even in medusae whose bells are but 12-13 mm. high, whereas in 
C. moseri the gonads do not begin to develop until the bell is fully 60 mm. high. 
Twenty-three specimens of C. moseri were obtained by the Albatross among the Hawaiian Islands. 
With the exception of one specimen they were all obtained at the surface, the exceptional specimen 
being a small one from a depth of 25 fathoms. Type no. 21800 U. S. National Museum. 
Record of Hawaiian specimens. 
No. of 
speci- 
mens. 
Date. 
Station. 
Geographical position. 
Depth. 
Remarks. 
1902. 
Fathoms. 
1 
Mar. 22 
3806 
23° 25' 36" N.; 152° 24' 
30" W. 
25., 
Small. No gonads. 
10 
Apr. 1-2.... 
3829 
Avalu Point, Lanai 
Island. 
Surface . 
Bells about 80 mm. high. Well developed gonads; one 
of them figured. 
2 
May 11 
3927 
21° 31' N.; 161° 55' W. . 
Surface. 
Medium size. No gonads. 
x 
Mav 13 
3929 
23° 19' N.; 166° 54' W.. 
Surface . 
Do. 
1 
May 15 
3930 
25° 07' N.; 170° 50' W_. 
Surface . 
Do. 
6 
June 9 
3980 
21° 23' N. ; 158° 19' W.. 
Surface . 
Various sizes. One with bell 33 mm. high, with no 
gonads. One with bell 67 mm. high, with small gonads 
only 4 mm. wide. 
2 
June 17 
4009 
21° 50' 30" N.; 159° 
15' W. 
Surface . 
One with bell 61 mm. high, with no gonads. Other small, 
with no gonads. 
Genus PERIPHYLLA Steenstrup. 
Periphylla Steenstrup, Acta Musei Hafniensis, 1837. Haeckel, Syst. der Medusen, p. 418, 1880. Maas, Result. Camp. 
Sci. Albert I", Prince de Monaco, fasc. xxvm, p. 44, 1904. 
Generic characters: Periphyllidse with 4 interradial marginal sense organs; with 16 (8 double) 
marginal lobes; with 12 solid tentacles, three between each successive pair of marginal sense organs. 
Periphylla dodecabostrycha Haeckel. 
PI. HI, figs. 5, 6. 
Chrysaora ( Dodecabostrycha ) dubia , Brandt, J. F.,.Mem. Acad. Imp. St.-P§tersbourg, Sci. Nat., vi e s6r., par. 2, tom. 2, 
4 me liv., p. 387, 1838, taf. xxix. Haeckel, E., Syst. der Medusen, p. 421, 1880. Vanhoffen, E., Acalephen der 
Plankton-Expedition, p. 10, taf. ii, fig. 1, 1892; Die Acraspeden Medusen, Wissen. Ergeb. der Deutschen Tiefsee- 
Expedition, “Valdivia,” bd. m, p. 23, 1902. Maas, O., Scyphomedusen der Siboga-Expedition, 11 monogr., 1903. 
p, 6, taf. n, fig. 15; taf. xii, fig. 107; Mem. Mus. Comp. Zool. at Harvard Coll., vol. xxiii, No. 1, 1897, p. 64, taf. xi, 
fig. 1. Rfeultats Campagnes Scientifiques Albert I« r , Prince de Monaco, etc., fasc. xxvm, p. 47, pi. v, fig. 36-37, 1904. 
There are five specimens of Periphylla in the Albatross collection which appear to be Periphylla 
dodecabostrycha in three different stages of growth. The bell of the smallest medusa is 55 mm. high 
and 50 mm. wide at the tentacular zone (fig. 5, pi. ii); while that of the largest is 100 mm. wide and 
only 70 mm. high (fig. 6, pi. ii). Another somewhat damaged specimen of intermediate size is 45 mm. 
wide and about 45 mm. high. As the color, shape of lappets, etc., remain the same in all of these 
