TAKEJSr AT ALNMOIJTH, NOEXHUMBEELAND. 433 



joints of the furca quite four times as long as broad, distinctly 

 constricted in front of the middle, each bearing two terminal 

 setse. 



Hah. — Among Fuci in pools near low-water mark. Only one 

 example of this Cyclops was seen, and it was not in quite per- 

 fect condition, but the genus is so little known as inhabiting 

 salt water that it seems desirable to make a record of this 

 species which is undoubtedly distinct from those hitherto de- 

 scribed. The marine species already recorded are Cyclops magn- 

 ociavus, Cragin, found by Mr. I. C. Thompson in "low-water 

 marine pools at Lytham," but which is also a fresh- water 

 species ; C. marinus, Thompson, dredged in 20 fathoms in the 

 Irish Sea, and C. Eivarti, G. S. Brady, which was first found 

 in the Firth of Forth, but has since been noticed by I. C. 

 Thompson in a 20 fathom dredging from the Isle of Man, and 

 by myself in tow-net gatherings from New Zealand. There have 

 also been described two Scandinavian species, C. magniceps, 

 Lilljeborg, and C. christianensis, Boeck. 



Ectinosoma melaniceps, Boeck. 



This pretty little species, — easily recognized by the dark grey 

 patch upon its head — is generally distributed round the British 

 shores, though nowhere very common. Several specimens oc- 

 curred in gatherings from among Algae in tide pools. This is the 

 first record of its appearance in our district, but I have lately 

 found it abundantly in a gathering from Cullercoats. 



Platychelipus littoralis, Gr. S. Brady. 



This interesting species is tolerably abundant in the mud of 

 the River Aln and in the tidal pools of the adjacent marshes. 

 Delavalia palustris occurs as usual in company with it, and 

 with these species one almost always finds associated Cythere 

 castanea and Loxoconcha viridis. 



Stenhelia limicola, sp. n. (Plate XII., figs. 1-7.) 



In general appearance like Canthocamptus, slender, and with 

 very short antennae and limbs (fig. 1). Anterior antennae ex- 

 tremely short, scarcely longer than the rostrum (fig. 2) eight- 

 jointed, the peduncle much stouter than the distal portion. 



