116 LIVERPOOL MARINE BIOLOGY COMMITTEE REPORT. 



only make out one colourless tubercle between the tentacles, 

 whereas Forbes describes two. This species is new to the 

 locality. 



Thaumantias convexa, Forbes. 



Found by Mr. I. C. Thompson, off Penmaenmawr, in 

 July, 1885. This species is new to the locality. 



Thaumantias thompsoni, Forbes. 



This species was obtained in fairly large numbers, on four 

 different occasions, off Port Erin, Isle of Man, viz., on 

 August 1st, 19th, 21st, and 22nd. 



The specimens are generally small and contracted, the 

 breadth of the umbrella varying, after preservation in picric 

 acid and alcohol, from about tV inch to ^ inch ; while Forbes 

 describes it as being, when living, and full-grown, about 

 J inch across the umbrella. This species is new to the 

 locality. 



Thaumantias hemisphcerica, Miiller. 

 This species was obtained in great profusion on August 

 21st, from the sheltered harbour of Port Erin, Isle of Man, 

 inside the Breakwater. I may here remark that the surface 

 material of August 21st was the most fruitful in Medusoid 

 G-onophores, four species in all being obtained ; thus bearing 

 out Forbes' statement, that '* they (Medusoid Gonophores), 

 abound most in sheltered bays." This species was also 

 obtained on the following day, August 22nd, but in much 

 smaller numbers. The specimens varied very much in size, 

 and the adult formula of Forbes for the tentacles (7x4 + 4) 

 was by no means constant. This species is new to the 

 locality. 



Thaumantias lucida, Forbes. 



Medusa hemisphcBrica, var. lucida, Macartney, Phil. Trans. 

 (1810). 



Two small specimens only of this species occurred on 



