()() BULLETIN OB" THE BUREAU OF EISHERIES. 



Family EPHYRin£. 



KEY TO THE GENERA. 



1. Gonads 4, lobular pouches lfi. 8 ocular and 8 tentacular Batiiyluca 



2. Gonads 4, simple, horseshoe-shaped; marginal lobes 16-32 Bphyroides 



3. Gonads 8, symmetrically disposed; lobular pouches 16, ocular Nausit/m 



1. Gonads s, symmetrically disposed; lobular pouches 32, 16 ocular, 16 tentacu' ir Nauphantopsit 



5. Gonads 8, arranged in pairs; lobular pouches numerous Atotta 



BATHYLTJCA Mayer (1900). 



Bathyluca Solaris Mayer. 

 Bathylaca solaria Mayer, Bulletin Museum Comparative Zoology, Vol. XXXVII, 1900, p. 2. 



Umbrella rather flat and thick, alioral surface clotted with batteries of nematocysts; marginal lap- 

 pets 24; tentacles 16, long and hollow; rhopalia 8; manubrium. cruciform, simple, devoid of arms or 

 appendages. Gonads 4, horseshoe-shaped; 4 subgenital pits beneath them on the subumbral wall. 

 Stomach large and with 16 gastric pouches, 8 of which extend to the ocular lobes and 8 to the tentac- 

 ular lobes. 



Colors. — Disk translucent, slightly bluish; clusters of nematocysts dull yellowish-brown; tentacles 

 slightly greenish. 



Distribution. — Narragansett Bay, R. I. Condensed from Mayer's description, which is the only 

 record for this region. 



EPHYB.0IDES Fewkes (1884.) 



Ephyroides rotaformis Fewkes. 

 Ephyroides rotaformis Fewkes. Report I*. s. Fish Commission 1884, p. 949. 



Fewkes describes what he considers both a new genus and species. The generic characters are 

 not definite, no mention being made as to gonads, radial pouches, etc. The following description is 

 condensed from the report above cited: 



Umbrella flat discoid, and viewed from the aboral aspect comprises three zones — "discus cen- 

 tralis," "zona coronalis," "zona marginalis." The last-named zone is marked by definite marginal 

 lappets of large size with rounded outlines twice as long as broad and 16 in number. Interposed 

 between the lappets are a similar number of gelatinous elevations — "socles" — ending a short distance 

 from the deepest point of the marginal incision of the discus centralis and zona coronalis. The mar- 

 ginal lappets are supported at their base by a pair of gelatinous socles. 



NATJSITHOE Kolliker (1853). 



Nausithoe punctata Kolliker. 



Nausiihoe punctata Kolliker. Zeitsehrift fur Wissenschiiftliche Zoologie, Vol. IV, 1853, p. 323. L. Agassiz, Contributions 

 Natural History United States. Vol. IV, 1862. pp. 122. 167. Mayer. Bulletin Museum Comparative Zoology. Vol. 

 XXXVII, 1900, p. 67. 



Reported by Mayer from the Bahamas and Tortugas, and therefore likely to be found in the 

 Woods Hole region, though not yet recorded there. 



NAUPHANTOPSIS Fewkes (1884). 



Nauphantopsis diomedese Fewkes. 



Nauphantopsis diom£deas Fewkes, Report U. S. Fish Commission 1884. p. 944-946. 



From fragmentary specimens collected by the Albatross in the Gulf Stream, Fewkes has described 

 this genus ami species as new. The following brief synopsis of characters is taken from the report 

 cited. 



Umbrella high disk-shaped, with somewhat vertical walls, as in Linerges. Exumbrella divided 

 into a central disk and a peripheral corona by a shallow coronal furrow. Corona crossed by 32 radial 

 furrows alternating with same number of radial rounded elevations. Marginal lappets 32, rectangular 

 in shape with rounded free angles. Tentacles -4, long and flexible, arisiiiLt from the incision between 

 the marginal lappets. Rhopalia 8 (?). 



Thstnbutum. — Latitude MS, longitude 69; depth 2,033 fathoms. 



