Stkphenson — Certain Actiniaria collected off In- lain!. ] 17 



7. SR. 188. Feb. 3, 1905. 50 miles W. f N. of Tearaght Light. Lat. N. 

 51° 53' ; Long. W. 11° 59'. 320-372 fathoms. Trawl. 2 specimens without 

 tentacles, with several Artinaugc richardi. 



8. SR. 502. Sept. II, 1907. Lat. N. 50° 40' ; Long. W. ll c 21'. Trawl. 

 447-515 fathoms. 5 specimens, with most of the tentacles gone. 



I having nothing further to add to the history of this species. 



Family CRIBRINIDAE McMurrich. 



"Actiniina with an adherent base. The column usually more or less 

 verrucose and frequently with acrorhagi at the margin ; these, however, 

 never being ramose or frondose. Sphincter endodermal, circumscribed. 

 Usually more than the first cycle of mesenteries perfect. No acontia." 

 (McMurrich, 32.) 



URTICINA Ehrenberg. 



Cribrinidae without acrorhagi, but with definite verrucae which are not 

 arranged in definite vertical rows as in Cribrina, but are irregularly scattered 

 over the surface. Numerous (more than six) pairs of perfect mesenteries. 

 Longitudinal musculature of tentacles mesogloeal. 



6. U. coriacea Cuvier. 



(For synonymy of this species and genus see Carlgren, 1893, p. 58.) 

 1. W. 131. March 11, 1910. Blacksod Bay, Feorinyeeo Bay, North. 

 Shore collection. 2 specimens. 



Anthopleura Duch. and Mich. 



Cribrinidae with definite acrorhagi containing batteries of nematocysts. 

 Verrucae present, and arranged in definite vertical rows. Numerous perfect 

 mesenteries. Longitudinal musculature of the tentacles ectodermal. 



7. A. alfordi Gosse. 

 {Aegeon alfordi, Gosse, 1S65.) 



1. St. vii. February 28, 1899. Ballynakill vii. Coastguard Hay. Shore 

 collection. 8 specimens. 



2. March 3, 1899. On the Bar, Fahy Bay. 1 specimen. 



This species has already been described by Miss O. M. Rees (47), and 1 

 have very little to add. One of my specimens has produced a small lateral 

 bud which has developed tentacles. I can state that tin' large tooth-like 

 marginal verrucae are truly acrorhagi in that they contain a battery of 

 nematocysts. There is one point in which I should like to add t<> Misa Kees' 

 description. My sections show the character of the .sphincter to be, typically, 



