180 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
derm of the feeding polyps is rose colored, and the nematocystic bulbs of the 
tentacles are orange-yellow. 
This is the largest species of Diphyid known at the present time. 
Common among the Fiji Islands in December, 1897. 
Abyla quincunx, Caux. 
Abylopsis quincunz, Chun, C., 1888, Sitzungs Berichte Akad. Wissen. Berlin, 
p. 1160. 
Abyla (Abylopsis) quincunz, Chun, C., 1897, Verhandl, Deutsche Zool. Gesell., p. 71, 
Fig. 13. 
A large number of specimens of a polygastrie Cal yconectes that appears to be 
identical with Abyla quincunx, Chun, of the Tropical Atlantic, were found by 
us among the Fiji Islands. Huxley (1859, p. 58) mentions having found this 
form in the Indian and Pacific Oceans, and he describes it under the name of 
Abyla pentagona. Several specimens of the Eudoxia form of this species (see 
Aglaisma quincunx, Chun, 1888) were found by us while in the Fiji Islands. 
This Fiji form appears to be identical with one observed by us at the Dry 
Tortugas Islands, Florida. 
Agalma Pourtalesii, nov. sp. 
We obtained this beautiful new Siphonophore near the mouth of Suva Har- 
bor, Viti Levu Island. We have also found a number of specimens that appear 
to be identical in all respects with the Fijian form, at the Dry Tortugas 
Islands, Florida. We hope soon to present a number of figures of this animal 
that is now in preparation, 
33 
in a paper upon “Medusæ from the Tortugas 
and will appear in the Bulletin, At present we will content ourselves by pre- 
senting a description of the species. 
Generic Characters. Agalma, Eschscholtz, 1825. Siphosome short and rigid, 
about as long as the nectosome. The whole siphosome is densely covered with 
thick prismatic bracts. The dactylozooide and feeding polyps are thickly 
scattered along the stem of the siphosome. The gonostyles spring from the 
internodes between the dactylozooide and feeding polyps. The tentilla are 
tricornuate, with a terminal ampulla and two paired horns. 
Specific Characters. The entire animal is about 25 mm. in length. The 
feeding polyps, tasterns, gonostyles, and tentacles all spring from the ventral 
side of the siphosome. The float is of small size, and is balloon-shaped, and the 
pneumatopore is surrounded by radially arranged streaks of dark red pigment, 
The swimming bells are dovetailed alternately on either side of the nectosome, 
so that their velar openings are found on two diametrically opposite sides of the 
nectosome. The siphosome is densely covered upon all sides with thick pris- 
matic bracts, The feeding polyps are somewhat stouter in shape than the 
tasterns, but in other respects are quite similar to them in appearance, The 
