4 

 • 



Frotn the Axna^s ant> Magazine of Natural History, 

 Ser. 6. Vol. xii., October 1893. 



On some new or rare Crustacea from Scotland. By ThomaS 

 Scott, F.L.S., Naturalist to the Fishery Board for Scotland, 

 and Andeew Scott. 



[Plates XI.-XIII.] 



COPEPODA. 

 Diosaccus propinquus, sp. n. (PI. XI. figs. 1-6.) 



Female. — Length, exclusive of caudal setas I millim. (^V of 

 an inch). Body moderately robust. Anterior antennge eight- 

 jointed, the first four joints stout, subequal, the last four 

 slender ; the combined length of the last four is equal to 

 nearly two thirds of the combined length of the first four ; 

 the proportional lengths of the joints are shown by the 

 formula — 



14 . 1 4 ■ 12 ■ 15 . 8 . 12 . 5 ■ 9 

 12 3 4 5 6 7 8' 



Posterior antennge comparatively short and stout, secondary 

 branch two-jointed (fig. 3). Mandible-palp one-branched, 

 two-jointed as in Diosaccus tenuicornis (Glaus), but the end 

 joint is much narrower than, and only about a third of the 

 length of, the basal joint. The maxillse and anterior foot- 

 jai|s are nearly as in Diosaccus tenuicornis. The posterior 

 f^ot-jaws are stout and the terminal claw is as long as the 



