232 
BRITISH ENTOMOSTRACA. 
From a careful examination of specimens sent me by 
Mr. Thompson, of Anomalocera Patersonii from Ireland, 
and Irenceus splendidus from Scotland, from an exami- 
nation of the specimens of Irenceus sent by Mr. Goodsir 
himself to the British Museum, and from the figures of 
the two given by Mr. Templeton and Mr. Goodsir, I have 
no doubt they are identically the same. The tubular 
organ in which the eye is situated in Irenseus, and which 
forms, according to Mr. Goodsir, the chief generic cha- 
racter, is merely the peduncle upon which the eye is 
placed, and which is well described in Anomalocera, by 
Mr. Templeton. Mr. Goodsir’ s description of Irenaeus 
seems to have been taken from a male specimen. He 
describes the little animal, when alive, as of a very bril- 
liant appearance. “ The whole animal,” he says, “ gives 
forth a kind of luminous appearance, which is apparently 
caused by the splendid metallic colours with which it is 
adorned. The prevailing colours are sapphirine and 
emerald.” 
“ The colour of the animal,” says Mr. Paterson, as 
quoted by Mr. Templeton, “ is a bright green, mottled 
with darker shadings ; the green colour is very fugacious, 
and observable only in recent specimens .... The first 
time,” he continues, “ on which I took any of these, was 
in crossing the ferry at the mouth of Larne Lough, 
county Antrim, in the evening of the 2d of May. They 
were so numerous, that in the space of fifteen minutes 
above three hundred were taken. Though kept in a 
glass jar of sea- water they all died during the night, and 
were almost colourless next morning .... They swim 
with a lively and constant motion, and jerk themselves 
out of the way when pursued. They form a portion of 
the food of a tentaculated Beroe.” (pp. 39, 40.) 
Hab . — Mouth of Larne Lough, county of Antrim, 
Mr. Templeton, W. Thompson, Esq. (Anomalocera) ; 
Frith of Forth, Mr. Goodsir; Kyles of Bute, W. Thompson, 
Esq. {Irenceus) ; Brit. Mus. 
