MEDUSAE OV WOODS HOLE REGION. 



Height of bell from 2 to I mm. h 



35 



slightly more than 



walls; mouth simple with slightly lobed lipt 

 half as broad. < mtogeny entirely unknown. 



Colors. — Bell very transparent, manubrium and gonads milk-white. 



Distribution. — Off Gay Head and Romans I. ami Vineyard Sound. Several specimens were taken 

 oil two occasions during the summer (July and August) in the same general region. 



Pruliara fun da li. 



Stomotoca apicala, 

 Mayer, i 



Alter 



Stomotoca apicata, '. (After Mayer.) 

 STOMOTOCA L. Agassiz I 1862). 



Stomotoca apicata iM.Ca.lv,. Text cuts. 



Saphenia apicata McOrady, Proceedings Elliott Society of Natural History, Vol. I. 1857, p. 129. 

 Stomotoca apicata L. Agassiz, Contributions Natural History United States, Vol. IV. 1862, p .17 

 JKnamatcUa carom Fewkes, Bull. 'tin Museum Comparative Zoology, Vol. VIII, 1881, p. 151. 

 Amphinema apicatnm Haeckel, System der Medusen, 1879, p. 50. 



This species presents rather striking sexual dimorphism; the male has a long tapering apical pro- 

 jection which is solid, while in the female it arises abruptly from the bell and is hollow. The colors 

 of the two sexes also differ, the male showing a preponderance of green, while the female is dull 

 brownish ocher. Radial canals wide, tentacles two, highly contractile and with prominent basal 

 bulbs; rudimentary bulb-like processes at the intermediate radial points, and often interradial bulbs 

 about the margin: manubrium large, quadratic in section, with broad base; gonads in four masses on 

 manubrial walls; month with prominent everted lobes. Ontogeny unknown. 



Colors as indicated above. Distribution chiefly southward in Woods Hole region: Newport. 



II. 1., etc. Mid-summer. 



Stomotoca rugosa Mayer. 



v., „i,,h.,-,i apicata Fewkes, Bulletin Museum of Comparative Zoology, Vol. VIII, 1881, p. 152. 



Amphinema apieatum. Brooks. Studies Biological Laboratorj Johns Hopkins Cniversity, Vol. II. lssx, p. 17:;. 



Stomotoca rugosa Mayer, Bulletin Museum Comparative Zoology, Vol. XXXVII, 1900, p. 32. 



Shape of boll similar to that of preceding species, but of larger si/..-. 5 mm. high by •"• mm. broad. 



