138 



THE MEDUSAE. 



Halicreas Fewkes, 1882. 

 sens. em. Maas, : 05. 



Halicreasidae with exumbral warts ; with eight radial canals. 



The original specimens for which Fewkes ('82'') founded this genus were 

 so fragmentary that little more than the chief generic character, the exum- 

 bral warts or papillae, could be distinguished. Fortunately, since these 

 structures are so far unparalleled among Medusae, the generic identity 

 of his material is not in doubt; but his description ('82'', '86) and figures are 

 so incomplete, omitting as they do any reference to tentacles or sensory 

 clubs, that I prefer to follow Maas (: 05) in adopting H. papillosum as 

 proposed by Vanhoffen. VanhofFen's other species, H. glabnim, and H. 

 rotundatum must be transferred to the genus Homoeonema, because they lack 

 the exumbral papillae. 



Halicreas papillosum Vanhoffen. 



Halicreas papiUosum Vanhoffen, : 02^, p. 68, taf. 9, figs. 7, 8, taf. 11, fig. SO; Maas, : 05, 



p. 57, taf. 10, fig. 70, taf. 11, fig. 71. 

 ? Halicreas minimum Fewkes, '82b, p. 306 ; '86, p. 953, pi. 8. 



Stati 



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Plate 3, Fig. S; Plate 33, Figs, 8, 9; Plate 34, Figs. 1-3, 5, 8, 10, 11. 



1 specimen. 



in trawl from 774 fathoms; 1 fragmentary specimen. 



in trawl from 2,005 fathoms ; 3 specimens ; fair condition. 



in trawl from 536 fathoms; 1 specimen. 



in trawl from 1,036 fathoms ; 2 specimens ; fragmentary. 



300 fathoms to surface ; 1 fragmentary specimen. 



in trawl from 2,600 fathoms ; 1 large specimen. 



300 fathoms to surface ; 3 specimens. 



300 fathoms to surface ; 2 small specimens. 



in trawl from 3,209 fathoms ; 1 specimen ; fair condition. 



300 fathoms to surface ; 1 specimen, 6 mm. in diameter. 



300 fathoms to surface ; 2 specimens ; fair condition. 



surface ; 1 specimen ; the disc only. 



300 fathoms to surface ; 3 fragmentary specimens. 



300 fathoms to surface ; 1 specimen. 



in trawl from 2,035 fathoms ; fragments. 



300 fathoms to surface; 2 fragmentary specimens. 



on 4621 

 on 4631 

 on 4647 

 on 4653 

 on 4654 

 on 4665 

 on 4666 

 on 4668 

 on 4669 

 on 4670 

 on 4671 

 on 4676 

 on 4685 

 on 4691 

 on 4707 

 on 4709 

 on 4711 



