28 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



microscopic objects, Mr. Lea has a number of views into 

 rock pools, taken with his vertical camera, showing 

 anemones fully expanded and fish lying on variously 

 coloured floors. Some of the foreign Biologists were 

 much pleased with these photographs, and Mr. Lea has 

 supplied Prof. Chodat with a number of reproductions of 

 the lantern slides for use in lectures at the University of 

 Geneva. Mr. Lea has kindly presented the complete 

 series of his photographs as lantern slides to the New 7 

 Museum of Zoology at University College, where they 

 will be permanently on exhibition, classified and labelled, 

 so as to illustrate the littoral fauna and flora at the south 

 end of the Isle of Man . 



The large green Thalassemia of which several specimens, 

 all more or less mutilated, were trawled from the deep 

 water to the S.W. of Port Erin at Easter, seems to be an 

 undescribed form. It must be, when perfect, about 20 

 cm. in length over all, and 10 or 12 mm. in average thick- 

 ness. The extended proboscis measures about 10 cm. in 

 length, and 15 to 20 mm. in breadth. In appearance it 

 most nearly resembles T. gigas, M. Miiller, but differs 

 from that species in the relative proportions of body and 

 proboscis, in the greater breadth of the proboscis, and in 

 the shape of its extremity. The colour is a rich green. 

 Prof. Lankester, who has seen one of the specimens, calls 

 it a " beautiful chrome green," and says " it is exactly the 

 colour of my specimen of Hamingia." 



Our species differs from Hamingia (as defined by 

 Lankester) in having strong setse present at the genital 

 pores in the female, and from Bonellia (another allied, 

 green form) in the shape of the proboscis and other 

 particulars. It is, in its anatomical characters, a member 

 of the genus Thalassemia, but differs in some points from 

 all the known species. The ciliated funnels of the cloaca! 



