8 



rather narrow, the width at base being scarcely one-fourth of the length ; the posterior extremity 

 is 0,76 mm. broad, l / lu — y n the length of the telson and 2 /- the width at base. The posterior 

 extremity (Fig. 1^) is triangular, half as high as broad and probably armed on either side with 

 4 spinules. A much smaller spinule is moreover implanted, on the dorsal surface, just before 

 the external spinule, like in Pas. Sivado (Risso) (vide: J. Thiele, in: Zoolog. Jahrb. Suppl. VIII, 



1905, p. 467, PI- IÓ , fig- 50). 



Eyepeduncles reaching hardly beyond the middle of basal antennular article, with a 

 rather large, obtuse tubercle at the base of the inner side ; corneae blackish or slate-coloured, 

 little enlarged, situated obliquely on the distal half of the peduncle. 



Antennular peduncle reaching a little beyond the middle of the distance between the 

 orbital margin of the carapace and the tip of the antennal scales, 3 ld article a little longer than 

 2 nd ; stylocerite almost reaching to the distal end of basal article, the outer margin convex, the 

 distal half sharply pointed and, like in the other species, twisted to a right angle with the 

 basal portion. 



Inferior spine of basal antennal article well developed, antennal peduncle a little longer 

 than basal antennular article. Scaphocerite 9,1 mm. long, 2,3 mm. broad, a little more than 

 half as long as the carapace and 4-times as long as broad 5 it narrows rather much anteriorly 

 and the terminal spine is well developed, 0,4 mm. long. 



External maxillipeds reaching almost to the distal end of the antennal scales. The legs of 

 the i st pair (Fig. 1 h) reach by two-thirds, those of the 2 nd by three-fourths of the fingers beyond 

 the antennal scales. Like in Pas. Sivado (Risso) in the two first pairs of legs a spine occurs at the 

 far end of the posterior border of the basipodite, while there is a series of spines along the 

 same border of the meri and a well developed spine at the distal end of the lower border of 

 the carpus. Fingers of i st pair two-thirds or three-fourths the length of the palm, those of 2 nd 

 pair a little, viz. one-sixth, longer than the palm; like in Pas. Sivado the chela of i st pair 

 carries a small spinule on the middle and another of the same size at the distal end of the 

 palm. The following legs apparently also resemble those of Pas. Sivado, so e. g. the propodus 

 of the 5 th pair (Fig. 1 i) is 4,8 mm. long, about 20-times as long as wide; the dactylus (Fig. 1 /) 

 measures one-fourth of the propodus, is nearly 4-times as long as wide distally and is, like in 

 the other species, provided at the rounded extremity and on the lower border with long setae, 

 that, like in Pas. Sivado (vide J. Thiele, 1. c. p. 467, PI. 16, fig. 51), are armed at one side 

 of their distal half with triangular teeth and at the extremity with 5 or 6 barbed hooks. 



According to Alcock (Descript. Catal. Indian Deep-Sea Crustacea, Calcutta 1901, p. 59), 

 Pas. Sivado (Risso) should occur in the Bay of Bengal and the Andaman Sea, but unfortunately 

 he does not say in his description whether the abdominal segments are carinate or not, he does 

 not describe the shape of the front and concerning the extremity of the telson he only remarks 

 that it is not forked. It appears therefore doubtful whether his specimens really belonged to 

 Pas. Sivado, but probably it has been the case, because the carapace is described as being 

 about half the length of the abdomen without the telson, a proportion which is observed 

 in Risso's species, but not in Pas. propinqua. I therefore applied to Prof. Döderlein of 

 Strassburg, who kindly sent me 3 of the 18 specimens of Pas. Sivado from Nizza, mentioned 



