102 



THE VOYAGE OF H.M.S. CHALLENGER. 



Zaus spinatus, Goodsir (PL XL. figs. 12-16, and PL XLI. figs. 13-17). 



Zaus spinatus, Goodsir, On several new species of Crustaceans allied to Saphirina, Ann. and 

 Mag. Nat. Hist, vol. xvi. p. 326, pi. xi. figs. 1-8 (1845); Brady, Mono- 

 graph of British Copepoda, p. 153, pi. lxvi. figs. 1-9 (1880). 

 „ spinosus, Claus, Die frei lebenden Copepoden, p. 146, pi. xxii. fig. 25, pi. xxiii. figs. 1-10 

 (1863) ; Boeck, Oversigt Norges Copepoder, p. 40 (1864). 



This well-known European species needs no detailed description here. The specimens 

 brought home by the Challenger were taken in Balfour Bay, Kerguelen Island, and differ 

 in no respect from those found in Europe, except, perhaps, that the marginal cilia of the 

 spines of the feet and posterior antennae are somewhat less fully developed. 



Zaus spinatus affords an interesting illustration of the close resemblance borne by 

 the Kerguelen Island Entomostracan fauna to that of Northern Europe, — a matter already 

 noticed in the preface. 



Miracia, Dana. 

 Miracia, Dana, Proc. Amer. Acad. Sci., 1849. 



Body subcylindrical ; forehead produced into a short blunt rostrum. Anterior 

 antennae eight-jointed, short, in the male geniculated, but without any vesiculiform enlarge- 

 ment. Posterior antennae two-jointed, and bearing a small single -jointed secondary branch. 

 Maxilla toothed and broad at the apex, and provided with a small (one- or two-jointed V) 

 setiferous palp. Mandible composed of a toothed cylindrical segment, without a palp. 

 Anterior foot-jaw small, divided into several small marginal setiferous processes. Posterior 

 much larger, two-jointed, joints long and narrower, the last truncated at the apex and 

 bearing a short falciform claw. Four pairs of feet adapted for swimming and non- 

 prehensile ; fifth pair foliaceous. Eyes very prominent, placed in the forehead, and 

 covered with two confluent refracting lenses. Abdomen four-jointed in the female, 

 five-jointed in the male. 



Miracia efferata, Dana (PL XXIII. figs. 1-16). 



Length, 1-1 2th of an inch (2*1 mm.). Integument tough; body slender, ten-jointed, with 

 distinct constrictions between the several somites ; abdomen nearly equalling the cephalo- 

 thorax in length. Eyes composed of two large confluent and extremely prominent lenses, 

 situated on the very front of the head (figs. 2, 16). Anterior antennae shorter than the 

 first body segment, eight-jointed ; in the female (fig. 4) slender, and gradually tapering 

 to the apex ; the third, sixth, and eighth joints are the longest, nearly equal, and together 

 make up half the length of the limb ; the fifth and seventh joints are the shortest ; each 

 joint bears about two or three setae of moderate length, and the fourth has a rod-like 



