tlie ScMzopocls collected by the ' Oceana.'' 3 



Of tliese species two were found to be new to scienee, viz. 

 Katerythrops Oceana and Gnuthojjhausia drepanephora. 

 Descriptions and figures of these have ah^eady appeared 

 (H. & T. loc. cit.), but it has been thought advisable to give 

 brief diagnoses in the present report as well. 



Three of the above species were taken by the * Oceana * 

 for the first time in British waters, viz. : — 



Euphausia pellucida. 

 Thysanoessa gregaria. 

 ^tylocheiron . Suhmii. 



Stylocheiron abbreviatwn and Euco^na australis were only 

 taken in those hauls made outside the British Area, and so 

 cannot be admitted to the British list on the evidence of the 

 'Oceana' collections, though both species have since been 

 met with in British waters (H. & T. loc. cit.). 



Schizopods occurred in thirty out of a total of forty '^' 

 hauls with the tow nets — a very fair proportion. It is 

 interesting to note that no Schizopods occurred in the 

 surface-hauls at any of the stations, nor in any net fished at 

 less than 230 fathoms, while seven of the nine species w^ere 

 taken only in those nets towed at greater depths than 500 

 fathoms. Very few hauls were made, however, at less depths 

 than 500 fathoms, which, in so far as Schizopods arc con- 

 cerned, is to be regretted, since many of the species captured 

 have been shown to belong essentially to the upper strata by 

 the collections made in the Bay of Biscay in July 1900 by 

 Dr. Fowler. It would have been interesting to have seeu 

 whether this holds for tlie same species in November, in so 

 far as it may be legitimate to compare July of 1900 with 

 November of 1899. It is possible that the absence of 

 Euphausians from the surface and upper waters may be ex- 

 plained by the consideration that most of the 'Oceana' 

 hauls were made during the daytime, and we have evidence 

 from Dr. Fowler's collections that certain Euphausians, such 

 as Evphausin jjellucida, rise to the upper strata by night and 

 sink by day ; or, if this be not admitted us fully proven, it is 

 at least certain that the more active forms are exceedingly 

 difficult to catch in the upper strata during daylight, espe- 

 cially in ordinary fine mesh silk tow-nets, such as were used 

 by the ' Oceana/ We are iinable to conclude that the 

 absence of Schizopods from the nets fished from 230 fathoms 

 or less furnishes material evidence of the distribution of 



* Including: some hauls made at St. 1, soundings 89 lath., in which no 

 Schizopods wvre taken, 



1-^ 



