THE MEDUS-^ AND CTENOPHORA. 115 



Of the four species of Medusoid Gonophores recorded by 

 Byerley, in 1853, not one has been found by the L. M. B. C. ; 

 and of the four species of the true Medusae, recorded from 

 the neighbourhood by Byerley, only the two commoner 

 species were obtained during last Summer's investigations. 



HYDROMEDUS/E.* 

 Order.— HYDEOIDA. 

 Family. — Clavid^. 

 Turris neglecta, Lesson. 

 " Taken rarely in the Mersey, by Mr. Price " (Byerley). 



Family. — CoRYNiDiE. 

 Sarsia tubulosaf Sars. 

 " Caught in the Mersey. Rare. Mr. Price " (Byerley). 



Family. — Atractylid-e. 

 Bougainvillia hritannica, Forbes. 

 Several specimens of this species were taken on August 

 1st (mid-day) ; on August 21st ; and one specimen on 

 August 22nd (noon, stiff breeze), off Port Erin, Isle of Man. 

 The specimens were all small. This species is new to the 

 locality. 



Family. — Companulariid^. 



Thaumantias pilosella, Forbes. 

 Found abundantly by Mr. Garner,! in Douglas Bay. 



Thaumantias octona, Forbes. 



This species is fairly common off Port Erin, Isle of Man. 

 Specimens were obtained on August 19th, 21st, and 22nd. 



Some of the specimens differ from Forbes' description in 

 having the tentacles much shorter and thicker, and the 

 tentacle-bulbs larger. Also, in one or two specimens, I could 



* For the Hydroid forms of the Hydromedusae, see Report on the 

 Hydro ida, p. 95. 



t Holiday Excursions of a Naturalist, p. 82. 1867. 



