28 IIYDROIDS COLLECTED BY THE " HUXLEY " FKOM 



(1134 metres), 0-97° C. ; 72° 27' K, 35° 1' E, 136 fathoms (249 metres), 

 0° C. (Bonnevie). Norway, Hardangerfjord, 90-100 fathoms (Sars). 

 Between Iceland and Greenland, 66° 42' N., 26° 40' W., 320 fathoms, 

 + 0-11° C. (Broch, 1903). Faeroe Channel, 61° 10' N., 2° 21' W., 345 

 fathoms, 30° F. ; 61° 21' K, 3' 44' W., 640 fathoms, 30° F. (Allman, 1874). 

 Off north-west of Scotland, 59° 28' K, 8° 1' W., 600-700 fathoms 

 (1100-1300 metres) (Broch, 1903). North-west of Faeroe Islands 

 (Broch, 1903). Bay of Biscay, off north coast of Spain, 43° 4' K, 

 8° 55' W., 80 fathoms (Pictet and Bedot). 



Filellum serpens (Hassall). 

 Lafo'ea scrpe7is, Bonnevie, 1899. 



This species was very common on Scrtulardla ahietina at Stations II. 

 and IX., 75-240 fathoms. 



Both Levinsen and Bonnevie state that the gonosome belongs to the 

 Coppinia type, and a figure of it is given by Bonnevie. 



Filellum serpens has recently been recorded by Jaderholm from the 

 Falkland Islands and Tierra del Fuego. It was found by the 

 Norwegian North Atlantic Expedition at many different stations, 

 10-328 fathoms (Bonnevie). 



Perisiplionia pectinata, Pictet et Bedot. 



Perisiphonia pectinata, Pictet et Bedot, 1900, p. 18, PL IV. V. 



There is only one specimen of this interesting Hydroid, which was 

 taken at Station XIII., 412 fathoms, and found attached to the coral 

 Zophohelia. The main stem is about 20 mm. in height, and has twelve 

 alternating branches. 



There are some exceedingly beautiful figures of this species drawn 

 by Bedot, who believes that his specimens, taken in the Gulf of 

 Gascogne and at the Azores, are identical with those described by 

 Allman (1888) under the name of Perisiphonia pectinata. Allman 

 has described two species of Perisiphonia — P.Jilicula from the Azores 

 and Australia, and P. p)cctinata from off the coast of New Zealand. 

 My specimen agrees very well with Bedot's figures, but I am not sure 

 that it is identical with either of Allman's species. 



The stem and branches have a principal axial tube from which the 

 hydrothecae arise, and it is surrounded by a number of auxiliary tubes, 

 which do not bear hydrothecae, but numerous minute sarcothecte. The 

 presence of sarcothecse is the characteristic feature of the genus. 



The hydrothecse are adnate for about half their length to the axial 

 tube. According to Allman, a pedunculated hydrotheca is one of the 

 characters of the genus, but I think that tliis detail might be omitted 

 from the generic characters and passed down to the species. At the 



