148 MARINE FAUNA OF ST. ANDUEWS. 



Genus Ceeapus, Say. 



Cerapus diffonnis, M.-Edwards ; B. & W. op. cit. i. 

 p. 457. 



Common in deep water. The straw-coloured body is marked 

 with dark grains ; and the superior antennae have the basal 

 third of the second and third segments tinted of a crimson 

 hue, the flagellum being similarly coloured for its proximal 

 half; the eyes have black centres and, as usual, a pale 

 margin. 



Genus SiPHONCECETUS, Kroyer. 



Si]}hona!cetus typicus, Kroyer ; B. & W. op. cit. i. p. 465. 



Abundant in the laminarian region in 3 to 6 fathoms off 

 the East Rocks, where it constructs nests on the inner surface 

 of bivalve shells. 8. Whitei, Gosse, is probably the female of 

 this species. 



Genus N^nia, Bate. 

 NcBtiia tuberculosa, Bate ; B. & W. op. cit. i. p. 472. 

 Occasionally in the d(5bris of the fishing-boats. 



Ncenia rimapalmata, Bate ; B. & W. op. cit. i. p. 474. 

 With the former. 



Nmnia excavata, Bate ; B. & W. op. cit. i. p. 476. 

 Common in the same debris from the coralline ground. 



Subfamily Cobofriides. 

 Genus Corophium, Latreille. 



Corophiumgrosstpes, L. ; B._ & W. op. cit. i. p. 493 (as C. lon- 



gicornis). 



Abundant in the brackish pools near the moutli of the Eden, 

 and occasionally at the West Rocks. It is common in July : 

 swims excellently on its back. 



