1188 



CRUSTACEA. 



feet quite unequal, and just beneath a prominently projecting apex 

 there appeared to be two short claws. 



Ovarian appendages to first joint of abdomen. Ovarian sac is 

 nearly oval, and projects some distance beyond the extremity of the 

 abdomen. Eggs few, of a grayish or light brownish red colour. 



The animals live ten days without changing the water, and produce 

 numerous young in that time, which were one-seventy-second of an 

 inch in length, and colourless. 



Earpacticus virescens, Dana, Proc. Amer. Acad. Sci., i. 151, 1847. 



Canthocamptus linearis. 



Corpus fere lineare, abdomine non suhito angustiore, postice parum 

 attenuatum. Antennae anticce brevissimce, 7-articulatce; articalis basa- 

 libus duobus crassissimis, prima majore, secundo perbrevi, setis totis 

 brevibus. Styli caudce styliformes, articulo abdominis ultimo Ion- 

 giores, parum divaricati, seta) secundd longitudine fere dimidii cor- 

 poris. 



Body nearly linear, the abdomen not abruptly narrower than thorax, 

 posteriorly a little narrower. Anterior antennae very short, seven- 

 jointed, basal joints two, very short, the first larger, the second 

 very short, the setse throughout short. Caudal stylets styliform, 

 longer than last segment of abdomen, a little divaricate, second seta 

 nearly half as long as body. 



Plate 83, fig. 9 a, female, enlarged; b, antenna. 



From the sea, among the Feejee Islands, July, 1840. 



Length, one-twentieth of an inch. Anterior antennae scarcely 

 longer than breadth of cephalo thorax. Anterior legs short and small. 

 Moves rapidly over a wet surface, with a wriggling motion, like other 

 species of this genus. 



Harpacticus linearis, Dana, Proc. Amer. Acad. Sci., i. 152. 



