PUNNETT AND FOESTEE COOPEE — NEMEETEANS. 3 



Geographical distribution. — The present collection is on the whole what our previous 

 knowledge of the forms from the Indian Ocean might have led us to expect. The 

 genera Drepanophorus and Baseodiscus together with the Lineidas are well represented, 

 and there is also a species of Frosadenoporus. But the collection is remarkable for the 

 presence of a Tubulanus — a genus not hitherto recorded among any of the collections 

 from the Indian Ocean. With the increase of our knowledge it is probable that other 

 genera will turn out to be cosmopolitan. Of the present genera, however, one may be 

 of some interest from the point of view of distribution. The records given in this paper 



Distribution of Diplopleura. 



make it clear that Diplopleura extends right across the Indian Ocean, finding its way 

 eastwards to Japan and New Florida, and pushing up on the west into the Red Sea and 

 the Mediterranean. It is a highly specialised form, and undoubtedly one of the most 

 recent productions of the Lineid family. "We give a map of the distribution of this 

 peculiar and striking genus, which is complete so far as is at present known. Its 

 occurrence both in the Mediterranean and Indian Ocean may possibly be of significance 

 for problems connected with the distribution of the marine fauna of these areas. 



