Browne — Fauna and Flora of Valencia Harbour, Ireland. 709 



The large compouncl tentacular bulbs are either epatilette- 

 shaped or -^ell curved ; but in the intermediate stages the bulbs 

 are only slightly CTured. In these specimens the tentacular 

 bulbs are not so large and not so much ciu'ved as in specimens 

 taken at Plymouth and Port Erin. 



The tentacular bulbs are of a dark broTm colour, ^vith longi- 

 tudinal rows of pigment corresponding to the tentacles in 

 position. The ocelli are large and black. 



Dr. Hartlaub has recently published a revision of the geniis 

 Bougainvillia in his Pteport on the Hydjomedusae of Heligoland. 

 I have here used Haeckel's generic name Margelis in place of 

 BovgainvUlia, as I prefer the latter name for those Medusae 

 which have been traced to Hydroids belonging to the genus 

 Bougainvillia. Up to the present none of the Talencia species 

 have been traced to Hydroid forms. 



I believe the Talencia specimens belong to the species 

 which I have called Margelis principis in my Eeport on the 

 Medusae of the Isle of Man (1895). But Hartlaub' s revision 

 causes me to reconsider the correctness of the former identi- 

 fication. If the exact position of the gonads is to be taken 

 as one of the characteristic features in deter minin g the species 

 of this genus, then my specimens certainly do not agree 

 with Haeckel's figures of the specimens in the Copenhagen 

 Museum, collected by Streenstrup. It was the very large 

 epaulette-shaped or crescent-shaped tentacular bulbs in the 

 Port Erin specimens which led me to adopt the name of 

 M. principis^ for they corresponded with the figui'es given by 

 Haeckel. As I have already used the name M. p>rincipis for 

 these Medusae with large epaulette-shaped bulbs, it will be best 

 to continue the use of the name until the correct determination 

 of the species has been made. 



I have rarely seen specimens with the large epaulette-shaped 

 tentacular bulbs, and it is probable that they represent this 

 species, at its maximum growth, with the greatest number of 

 tentacles. 



Margelis pyramidata (Forbes and Goodsir). 



Hippocrene pyramidata., Forbes and Goodsir, 1851, p. 312, pi. x. ; 

 Haeckel, 1879, p. 635. 



In 1897, about twenty specimens were found in the tow- 

 nettings taken dming June and July. 



