830 Froceedings of the Royal Irish Academy, 



Iiineus longissimus (Gimnerus). 



Abundant and generally distributed in Valencia Harbour on 

 the shore and on dredging grounds. 



Iiiueus bilineatus (Eenier), M'Intosli. 



Dredged in most parts of the harbour, but nowhere at all 

 abundant. Mostof the specimens were very small. The largest 

 perfect one was 15 cm. long. Fragments of a large IN'emertine, 

 believed to belong to this species, were dredged at the mouth 

 of the harbour. It may, however, have been referable to the 

 L. Kenneli of Biirger, supposing that species to be distinct. 



Genus — Micruea. 

 Micrura purpurea (Dalyell). 



ifot uncommon in most parts of Valencia Harbour ; occasion- 

 ally found under stones on the shore. A single example was 

 di'edged in Dingle Bay on August 12th (exact locaKty not 

 known). The largest obtained measui'ed 10 cm. in length. 

 Colour, pui'ple and red-brown, and dark green. 



Ulicrura fasciolata (Ehrenberg). 



Generally distributed and abundant on dredging grounds 

 and between tide-marks in Valencia Harbour. Several small 

 examples (5-25 mm.) were dredged in Dingle Bay — one from 

 sandy ground, in about 25 fms., north of Doulus Head ; the 

 exact localities whence the others came was not ascertained. 



A few of the unhanded variety were met with at Valencia. 

 These differ, however, from Biirger' s figui'es and description of 

 M. tristis (JiMbxeohi) in the shape and pale unpigmented border 

 of the head. 



Genus — Ceeebeattilus. 



Cerebratulus fuscus, M'Intosh. 



Examples, ranging from 1^ to 5^ cm., were dredged in vaiious 

 parts of A'alencia Harbour. They exhibited a good deal of 

 variation in the amount of reddish brown pigment on the 

 dorsal surface and in the relative distinctness of the eyes, but 

 all had the characteristic shape. The head ends of two speci- 

 mens, probably of this species, were di'edged in Dingle Bay, in 

 about 25 fms., both on fine muddy sand. 



