HYDROIDS OF THK WOODS IIOLK REGION. 



373 



Dipurena coiiica A. Ag. 



(North American Aralepha?, p. 181.) 



Bell a rounded cone. Marginal tentacles 4, rather short, each with a rounded knob on the diatal 

 end and a pigmented spot and eye-speck at the base. Proboscis long, when fully extended reaching 

 far below the rather broad velum, but capable of great retraction; attenuated proximally and swollen 

 dietally; mouth plain, without mouth tentacles. Radial canals 4, slender. Young specimens are 

 almost globular in form. 



Colors. Distal and proximal ends of tentacles reddish. Eye-specks black. 



Distribution. Naushon (A. Agassiz). 



I have not seen this species; the above description is condensed from that of Dr. A. 



A. 



s:l. Krlnfilfiirn iicltramt A. Agr. 

 A. [.literal view. B. Aljornl view. 



82. Cbrync mfmbills (Ag.) 



B. 



81. Pri!ai-iirtfaMcCr. 



A. Mt'ilum from which the ova has been expelled. 



B. Medusa expelling an ovum. 



Ectopleura ochracea A. Ag. Fig. 83. 

 (In L. Agassiz Cont. Nat. Hist. U. S., vol. IV, p. 343.) 



i Bell longer than broad, subpyriform in shape, the upper end being the smaller; surface orna- 

 mented by eight meridional bands of nematocyste, a band originating on each side of each tentacle 

 base and passing directly over the surface of the bell to its apex. Tentacles 4, short, usually carried 

 so closely coiled as to appear like mere knobs. Proboscis terete, not reaching to the bell opening, and 

 ending in a simple mouth. Radial canals 4. 



Colors. Manubrium bright yellow proximally aWd'distally, the middle part being rose pink. 

 Tentacular bulbs ochraceous, with a red eye-spot on each. 



Distribution. Abundant at Newport in August. Woods Hole. Probably common throughoat 

 the region discussed in this work. 



