102 BRITISH ENTOMOSTRACA. 
2. Moina brachiata. Tab. IX, figs. 1, 2. 
Monoculus brachiatus, Jurine , Hist. Monoc., 131, t. 12, f. 3, 4. 
Daphnia brachiata, Desmarest, Cons. gen. Crust., 373. 
— M. Edwards , Hist. Nat. Crust., iii, 383. 
— Baird , Zoologist, i, 196, fig. at p. 193; Trans. 
Berw. Nat. Club, ii, 148. 
The length of this little creature is about half a line. 
The shell or covering is of an olive colour, transparent, 
showing the stomach and intestine very plainly. It bulges 
out very much posteriorly, giving the animal a very jolly 
appearance, and is ciliated anteriorly. 
The superior antennae are large and long, projecting 
straight out from the beak, somewhat cylindrical in shape, 
giving off from their upper margin one or two small 
spines, and terminated by several short setae. The main 
stalk, or basilar joint of the inferior antennae, is very 
large, and fleshy-looking ; the under edge, for about 
half its length from the base, being crenated, and having 
two short setae springing from one of the crenations, or 
small lobes, at about the middle of its length ; the upper 
edge also is crenated. The articulations of the branches are 
somewhat serrated on the edges, and the long setae with 
which they are furnished are all finely plumose, and jointed 
about the middle of their length. 
The abdomen has at its extremity eight short spines 
on the inner edge, and two long, stout claws. The two 
setae on the seventh joint of body are long, plumose, and 
jointed. 
This species is not so active as some others of this 
genus, owing perhaps partly to the form. It has a great 
many ova. 
Hab . — I first found this species in a stagnant pool in 
old St. Pancras road, London, nearly opposite old St. 
Pancras Church, in the summer of 1844. Since then, 
the pool in which it occurred has been built over. Pond 
on Blackheath, June 1848. 
