24 The British Oceanic Entomostraca. 



Whether this be referable to the following species I cannot 

 determine, not having seen authentic specimens of it. The 

 only habitat given by Dr. Baird is Berwick Bay, where, he 

 says, it is not common. It is to be hoped that A. depressa 

 may again be captured, in order that its relation to the follow- 

 ing species may be definitely made out. 



Alteutha bopyroides, Claus. Claus, Copepoden, p. 143, 

 t. xxii., figs. 10 — 17. 



This species agrees in most of its characters with A. 

 depressa, as described and figured in Dr. Baird' s work; but 

 the details of structure there given are not sufficient to allow 

 of certainty in the matter. My specimens were taken in the 

 towing net, three or four miles off the Durham coast. 



Zaus spinosus, Claus. Claus, Copepoden, p. 146, t. xxii., 

 fig. 25; t. xxiii., figs. 1 — 10. 



The genus Zaus is nearly allied to Alteutha, from which it 

 is separated by having both (instead of only the outer) 

 branches of the first pair of feet armed with terminal 

 claws, and also by the greater breadth of the rudimentary 

 fifth feet. 



I have a few specimens of Z. spinosus taken in tide-pools 

 at Boker near Sunderland. 



Zaus ovalis, Goodsir. Claus, Copepoden, p. 146, t. xxii., 

 fig. 18 ; t. xxiii. figs. 11—18. 



A much larger species than the foregoing. It is very 

 much more elongated, has comparatively short tail setee, and 

 a different shell structure. I am indebted to C. Spence Bate, 

 Esq., for specimens recently taken at Banff. I am not aware 

 that it has previously been noticed on our shores. It was 

 originally described by Mr. Goodsir in the Annals of Natural 

 History for 1845. . . 



Monsteilla anglica, Lubbock. Lubbock, Ann. and Mag. 

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



CoRYoaaus anglicus, Lubbock. Lubbock, Ann. and Mag. 

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



The descriptions given by Mr. Lubbock (loc. cit.) are our 

 only authority for the existence of these two species. They do 

 not appear to have been found by any other observer, and the 

 characters given by their discoverer would lead us to suppose 

 them referable to the Psecilopoda or fish parasites. 



Cetochilus septentrionalis, Goodsir. Baird, Brit. Entom., 

 p. 235, plate xxix., figs, a — g. 



Dr. Claus has divided this into two species, C. longiremis 

 and C. Helgolandicus, and being Unable to determine to which 

 of these two forms Goodsir' s description was meant to apply, 

 has dropped the original specific name altogether. This is to 

 be regretted, as it is almost impossible that, in the early 



