84 



'TERRA NOVA" EXPEDITION. 



grooved. It is narrow, and its sides converge gradually towards the hinder end, 

 where they diverge on the arms of a Y, whose deep, backwardly directed cleft 

 contains on each side seven spines, the whole structure having a remarkably larval 

 appearance, though the specimens are quite adult. Thus, P. longispina would belong 

 to the sub-genus Phye, were the latter worth maintaining in view of the complete 

 gradation of form shown by the telson in the several species of Pasiphaea. 



One specimen was taken at Station 276, the other from the stomach of an 

 albatross, at a locality which is not stated, but must have been considerably further 

 north. 



Family PANDALIDAE. 

 Sub-family THALASSOCARIDINAE. 

 13. Thalassocaris novae- zealandiae, n. sp. Fig. 2. 



Diagnosis. — Rostrum almost straight, very slightly upturned towards the tip ; 

 its formula j, four of the teeth standing behind the orbit. A spine below the eye 

 and one behind the antenna present on the carapace. Antennular stalk reaching end 



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^^"^^^^^A '• 



Fig. 2. — Thalassocaris novae-zealandiae, n. sp., x 2^. 



of rostrum ; its last two joints subequal, together shorter than first. Antennal scale as 

 long again as antennular stalk, without teeth on outer edge, its inner edge converging 

 towards terminal spine, which projects freely. Antennal stalk slightly longer than 

 antennular. Third maxilliped outreaching antennal scale by about one-third, and 

 first leg by about one-half, of its end-joint. Second leg slightly outreaching third 

 maxilliped, its chela slender and simple, its wrist longer than its hand, but divided into 

 two by a joint slightly beyond the middle of its length. Third leg longest of all, 

 fourth a little outreached by second, fifth by first. Legs 3-5 with slender, naked 

 end-joints, but a row of spines under meropodite, carpopodite, and propodite, and 



