A COLLECTION OF HYDEOIDS. 269 



On a Collection of Hydroids, mostly from the 

 Natal Coast. 



By 

 Ernest Warren, D.Sc.L.oii(l. 



With Plates XLV— XLVIII. 



DuEiNG the last few years a collection of tlih'ty-one species 

 of hydroids has been made while shore-collecting on the Natal 

 and Znluland coasts. In addition, some fonr species have 

 been dredg-ed from a depth of 40 fathoms in the neighbour- 

 hood of Bird Island, near Algoa Bay. 



In the following list the species are enumerated under their 

 various families, and the localities are also given. 



Except when otherwise stated, the specimens were obtained 

 from the rock-pools at low-tide. They were generally fixed 

 with a half-saturated solution of corrosive sublimate in 30 per 

 cent, spirit, with 1^ per cent, acetic acid. The best results 

 were obtained when the solution was applied fairly hot. 



For staining the hydroids whole, Mayer's paracarmine was 

 found satisfactory, and for sections, Delafield's hematoxylin, 

 or iron-ha^matoxylin followed by orange, were employed. 



Fam. BimeriidcV. 



(1) Parawrightia robusta Warre)i. 



Loc. : Isipingo, Scottburgh, Park Eynie. 



