Browne — Fauna and Flora of Valencia Harbour, Ireland. 703 



3 mm. in wiclth. A few of the Valencia specimens measured 

 6 mm. in length. 



The abundance of the Medusae clearly shows that the Hydroid 

 must be very abundant somewhere in the neighboui'hood of 

 Valencia Island, but it has yet to be found. This Hydroid 

 is a difficult object to di-edge, as it usually lives rooted in sand. 



Cytseandra areolata (Alder). 



Cytceandra areolata, Haeckel, 1879 ; Browne, 1897, P. Z. S., p. 817, 

 pi. xlviii. 



A very scarce Medusa, occurring at irregular intervals from 

 April to Ifovember. Solitary specimens were taken on the fol- 

 lowing dates : — 



1895, April 12th and 29th, May 14th, July 8th. 



1896, July 18th, I^ov. 2nd. 



1897, September 8th. 



1898, July 27th (two specimens). 



An adult with ripe ova was taken in April, 1895. 



This Medusa is probably liberated from one of the species 

 belonging to the Hydroid genus Podocoryne. 



Dipurena ophiogaster, Haeckel. 



Sarsia strangulata, Allman, 1871, p. 46, fig. 17. 

 Dipurena opMogaster, Haeckel, 1879, p. 29. 



In 1896, only a few specimens were taken during the summer. 



In 1897, it first appeared in May and disappeared in Septem- 

 ber ; fairly common duiing June. 



In 1898, it was very scarce, only seen in May and Sep- 

 tember. 



The largest specimen measui'ed 5 mm. in length and width. 

 The manubrium, when fully expanded, was 40 mm. in length, 

 and carried four oval masses of generative cells, in addition to a 

 large mass of cells adjacent to the stomach. 



This species was first taken by Allman on the south-west 

 coast of Ireland, and figured in his monograph under the name 

 •of Sarsia strangidata. I have retained Haeckel's specific name, 

 as there is an American species called Dipurena strangulata 

 (MacCrady, 1857). 



Haeckel records D. opMogaster from Granville in Normandy, 

 and from Jersey. I have also taken it at Jersey and Plymouth. 



