456 Holt — On the Eggs and Larvce of Teleosteans. 



Clupea harengus (Linn.). The Herring. 



A post-larval herring, 1^ inches in length, occurred in the trawl in Birturbuy 

 Bay in the early part of June. 



Syngnathid^. 



Siphonostoma typhle (Linn.). The Broad-nosed Pipe-fish. 



This species was found to be very common amongst the Zostera beds in Clew 

 and Blacksod Bays on the 2nd and 6th July. A single specimen was taken in the 

 shrimp trawl in Killybegs Bay on the 23rd June. Many of those taken in the 

 Zostera beds presented an exact imitation of the colour of the Zostera. All the 

 males observed carried either well-advanced ova or young. The latter were of 

 different sizes in different parents, some being so far advanced that they readily 

 quitted the parent in the bucket in which they were placed on capture. Ryder 

 has described the development of an American species [S. fiiscum) (op. cit., p. 508). 



Syngnathus acus (Linn.). The Great Pipe-fish. 



Abundant in the same locality as Siphonostoma typhle, and agreeing with it in the 

 condition of the eggs and young. This species occurred also at Inishboffin and 

 other places, and was obtained whenever the shrimp trawl was worked on weedy 

 ground. Young specimens were occasionally obtained in the surface-net, amongst 

 floating weeds, in Blacksod Bay. 



Nerophis aequoreus (Linn.). Snake Pipe-fish. 



Abundant in the Zostera beds, on the same dates as the Siphonostoma. Many 

 of the males carried ova more or less advanced. As in Siphonostoma, the coloura- 

 tion, save for the transverse bars, presents an exact mimicry of the surrounding 

 Zostera. The same condition was noticeable in specimens of Hippolyte varians. 



Nerophis lumbriciformis (Will ugh). "Worm Pipe-fish. 



Specimens of this species occurred frequently. A few males, taken amongst 

 the rocks in Killeany Bay, Aran Islands, carried advanced ova (3rd June). 



