The British Oceanic Hntomostraca. 27 



afterwards, under the name of Irenceus splendidus, by Groodsir, 

 in the Edinburgh New Philosophical Journal for 1843. Dr. 

 Claus, in his recent monograph of the Copepoda, has adopted 

 Groodsir's generic name, on the ground that Anomalocera,* 

 which evidently has precedence, is inapposite, as all the family 

 to which this species belongs have the males with dissimilar 

 antennae. But if we admit the right of authors to ignore prior 

 names, merely on account of a fancied impropriety, which gives 

 rise to no manner of inconvenience, we shall speedily have our 

 nomenclature in a state of inextricable confusion. We there- 

 fore adhere to the original generic name of Anomalocera. 



A. Patersonii is the finest of all the British Copepoda, both 

 as to size and colouring. When alive it glows with a splendid 

 iridescent lustre, the prevailing colours being blue, red, and 

 green. The antennas and caudal segments are mostly a 

 brilliant blue, while the body is mottled with varying shades 

 of red and green. The specimens from which our coloured 

 plate was drawn were taken by the Eev. A. M. Norman, on 

 the east coast of Scotland, in the summer of 1 863, and having 

 been mounted while alive in a gelatine medium, still preserve 

 their colouring in its original brilliancy. The species seems 

 to be distributed generally throughout the British seas. 



Pontella Wollastonj, Lubbock. Lubbock, Ann. and Mag. 

 Nat. Hist., 2nd series, vol. xx. 



Of this species I know nothing. It is, however, in all 

 probability, identical with P. Helgolandica, Claiis. 



Pontella beevicoenis, Lubbock. ' Lubbock, Ann. and Mag. 

 Nat. Hist., 2nd series, vol. xx. 



A fine species taken by Mr. Lubbock at Weymouth, and 

 by the present writer in the Channel Islands. 



EEFEEENCE TO PLATE. 



Fig. 1. Upper antenna of male Tachidius brevicomis, mag- 

 nified 200 diameters. 



Fig. 2. Lower foot-jaw of Thalestris longimana (copied 

 from Claus). 



Fig. 3. Upper antenna of Dias longiremis, magnified 60 

 diameters. 



Fig. 4. Fifth foot (right) of male Ichthyophorba denticornis, 

 magnified 50 diameters. 



Fig. 5. Abdomen of female Temora velox, with spermato- 

 phores attached, magnified 40 diameters. 



Fig. 6. Male Anomalocera Patersonii, magnified 30 dia- 

 meters : a, rostrum, or beak;, b, upper antenna (right); c. 

 upper antenna (left) ; d, lower antenna ; e, foot-jaws ; f f f, 

 swimming feet ; g, fifth foot (right) ; h, fifth foot (left) ; i, ab- 

 domen; h, eye. 



* From avo>fj.a\os, dissimilar ; and Kepas, a horn. 



