igii. Notes. 199 



Utricularia ochroleuca, Hartm. 



In 1894 I collected at Recess a puzzling Bladderwort, which I labelled 



" Utricularia intermedia ? with bladders on leafy stems. Growing with 



typical U. intermedia and U. minor, bog-hole, Recess, Connemara, May, 



1894." The plant has lain so named in my herbarium until September last. 



when a visit of Dr. Gliick of Heidelberg, a special student of this group, 



has resulted in its being identified as U. ochroleuca. This plant, but 



recently definitely recorded from the British Isles (/. N ., 1910, p. 237) 



is now known from a number of stations in Scotland, its only Irish (and 



first Britannic) station being Kylemore in Connemara, Druce, 1875. 



Mr. Druce has fullv discussed this plant and its distribution in a recent 



number of this journal (pp. 120-123 supra). I may add that another 



feature, which Professor Gliick says is characteristic, is conspicuous in 



my specimens, namely, that the hybernaculum, instead of being compact 



and egg-shaped as in U. intermedia, becomes lax, slender, and elongate, 



being about half an inch in length, and only half the breadth of those 



of U. intermedia. 



R. Lloyd Praeger. 



Dublin. 



ZOOLOGY. 

 The Distribution of the Marine Copepoda. 



The distribution of the Copepoda is a subject which has received in- 

 creasing attention in recent years, and in this connection it is interesting 

 to note the issue of the first parts of a work on the subject by Mr. G. P. 

 Farran. We have received copies of the first two parts which are published 

 by the Conseil permanent iJitcrnational pour I' Exploration de la Mer. Mr. 

 Farran's work is a summary of the results of the international investi- 

 gations carried on in the waters of north and west Europe in the years 



IQ02 1908. In these two parts twenty-three species are dealt with in 



detail. Each is taken up individually and the facts relating to its dis- 

 tribution are summarized under several headings, such as : — " General 

 Distribution and Biology " " Distribution within the regions investigated " 

 " Relations to the hydrographical conditions " ; " Economic importance " 

 and "Observations still to be made." , 



Of special interest are the results which have shown the existence of 

 a distinct periodicity in the occurrence of certain species. This has been 

 done particularly in the case of Paracalanus parvus, Pscitdocalanus 

 elongatus, Metridia liicens, and Calanus finmarchicus. As regards dis- 

 tribution in Irish waters the last two are the most interesting. From 

 February to May Metridia luccns is abundant on the west coast as far 

 north as Belmullet, and only moderately common in the Irish Sea. From 

 August to November on the other hand it extends northwards only as 

 far as Aran, while it becomes at the same time extremely abundant in 

 the Irish Sea. The facts with regard to Calanus finmarchicus are more 

 accurately known than in the case of most of the species, and the seasonal 

 fluctuations in its occurrence are well established. Speaking of the west 



