99 



The merus of the 5"> legs of the male is almost twice as long as the ischium and 5-tinies 

 as long as broad in the middle; the lower margin is armed with 4 spines that are much smaller 

 than those of the 3''' and 4"' pair, and implanted along the whole length of the margin, while 

 the lower border of ischium and merus is fringed with long feathered setae. Carpus about half 

 as long as the merus, a little more than 3-times as long as thick, with a comparatively small 

 spine at the far end of the posterior margin, but with no spine on the middle, propodus a little 

 longer than merus, twice as long as the carpus and about 7-times as long as broad; dactylus 

 measuring one-third the length of the propodus, 5 -times as long as broad, gradually narrowing, 

 no spinules on the upper margin but with 5 on the lower or posterior, that gradually increase 

 in length like the interspaces between them, terminal claw measuring one-fourth the whole length 

 of the dactylus. Fifth leg of the female resembling that of the male. 



Ova comparatively large, 0,7 — 0,74 mm. long, 0,44 mm. broad and not very numerous. 



The adult male from Stat. 138 is 18 mm. long from tip of rostrum to tip of telson, 

 the abdominal pleura are armed with spines like in the preceding specimens and the 2"'' pleopod 

 bears a stylamblys and an appendix masculina ; in the two young specimens that are of etpial 

 size, 10 mm. long, the pleopod of the 2"'^ pair has only one appendage, the stylamblys, but 

 they are considered as males, because the abdominal pleura resemble those of the adult male. 

 The rostrum of the adult male is \''-dentate, of the upper teeth two stand on the carapace, 

 the 3''^ immediately before the orbital margin, the teeth increase distinctly in size from the 1^' 

 to the last and the latter is a little farther distant from the t\\) than from the penultimate. 

 Teeth of the lower margin like in the preceding specimens. The rostral dilatation appears as 

 long in proportion to the rest of the rostrum as in D.\na's figure 6/\ but the dilatation is 

 anteriorly only 1,1 mm. broad, less broad than in the other adult specimens, posteriorly, however, 

 0,9 mm., so that the straight, not concave, lateral margins converge less strongly than in 

 D.\N.\'s figure. 



The spine of the 3''^' tergum reaches not yet to the middle of the 4'''. 



Terminal joint of external ma.xillipeds only 3-times as long as the penultimate. In the 

 peraeopods of the i^' pair the merus is still a trifle longer than the ischium, the carpus measures 

 ii of the merus and the terminal joint is but one-fourth longer than the carpus. The legs of 

 the 2°<i pair resemble those of the adult female from Stat. 99 (F"ig. 22/). Those of the 3'^'^ and 

 4'!^ pair also agree with the male from Stat. 282, the merus of these legs is, 'however, armed 

 with four teeth, the dactylus of the y^ pair has only 4 spines on the upper and 14 on the 

 lower margin besides the terminal claw; the dactylus of the 4*'' pair, 6-times as long as broad 

 at base, bears only 2 spines on the upper and 9 on the lower margin besides the terminal 

 claw. The merus of the 5"* leg bears 3 spines on the lower margin, 2 on the proximal half 

 and one near the distal extremity. Dactylus of last pair 5-times as long as broad, with 7 spines 

 on the lower margin besides the terminal claw. 



In the two young individuals the rostrum is not yet laterally dilated and the legs 

 show also some slight differences from the adult species: ischium and merus of the 2"'' pair 

 are still devoid of spines and prominences and the dactyli of the following legs show a more 

 slender form. 





