[SCIENTIFIC RESULTS OF THE PHILIPPINE CRUISE OF THE FISHERIES STEAMER 

 "ALBATROSS," 1907-1910.— No. 22.] 



PRELIMINARY ACCOUNT OF ONE NEW GENUS AND THREE 

 NEW SPECIES OF ^lEDUS.E FROM THE PHILIPPINES. 



By Henry B. Bigelow, 



OJ the Museum of Comparative Zoology, Cambridge, Mass. 



The MeduscC described below were collected by the Fisheries steamer 

 Albatross among the Philippine Islands dming 1907-1910. A complete 

 account of the collection, with figures, is now in preparation. 



Genus PROTIARA Hseekel, 1879. 



PROTIARA TROPICA, new species. 



Station 5500, 200 fathoms, August 4, 1909, one specimen 9 mm. 

 high by 9 mm. in diameter; the tentacles 3 mm. long. 



In general appearance the specimen is so Sarsia-hke that until I 

 examined the gonads I referred it to that genus. Perhaps other 

 Protiaras have passed as Sarsias, and thus escaped notice. The gelati- 

 nous substance is thick, the subumbrella cavity comparatively small, 

 and higher than broad. 



Tentacles. — There are four simple, hollow radial tentacles, the lumen 

 of each being so large that it is easily seen on dissection. The ten- 

 tacles are cjdindrical and have no distinct basal swellings. There 

 are no ocelli, either axial or abaxial, nor are there any pigment 

 granules at the tentacle-bases. 



Canals. — The margins of the canals, both radial and circular, are 

 smooth, and all are rather narrow. In a Sarsia such a conformation 

 might be taken for granted, but among the Pandeidse their edges often 

 show diverticula of one shape or another. 



Manubrium and gonads. — The manubrium extends to about the 

 mid-level of the bell cavity, but it is evidently somewhat con- 

 tracted. The mouth is surrounded by a simple lip which is not crenu- 

 lated or folded but merely slightl}^ quadrate. As seen aborally the 

 manubrium is distinctly cruciform, there being four prominent radial 

 longitudinal ridges extending from the base nearly to the mouth 

 opening. 



Proceedings U. S. National Museum. Vol. 43— No. 1931. 



253 



