4-02 



the posterior pair a little farther distant from the anterior pair than from the posterior margin 

 or just as far distant. In the adult specimen from Stat. 19 the lateral spinules are missing, but 

 in the other, younger specimen the longer inner spinules reach almost to the end of the telson. 

 The tvvo spines of the basal joint of the uropods are very small, especially the outer, which 

 sometimes even is wanting entirely; the uropods are little longer than the telson. 



Second antennular article slender, 5-times as long as thick in the middle, almost twice 

 as long as the visible part of the i st ; in the young female from Sapeh-bay, long iS mm., it 

 appears but little longer than the i st . Stylocerite a little shorter than basal article, terminating 

 in a slender spine, that is turned outward. 



Spine on the basicerite small. Carpocerite hardly reaching to the end of second antennular 

 article. Scaphocerite slender, a little shorter than the antennular peduncle, ter- 

 minal spine as in A . macrosceles, hardly reaching beyond the obtuse tip of 

 the blade, stout, its width at base being one-third its length (Confer: H. 

 Coutière, Buil. Soc. Entom. France, 1898, p. 32, fig. 3'); outer margin of the scaphocerite very 

 slightly concave. 



External maxillipeds slender, as long as the antennular peduncle; penultimate joint 

 appearing, in a lateral view, 3-times as long as thick distally, terminal joint one and a half 

 as long as the penultimate, tapering, seven times as long as broad at its base and with obtuse 

 extremity. 



Thoracic legs as slender as those of A. macrosceles and A. Talismaui. In the adult 

 male from Stat. 19 the large cheliped, 24,5 mm. long, appears a little shorter than the body. 

 The merus, 6,8 mm. long, reaches as far forward as the antennular peduncle and its form is 

 slender, for it appears six times as long as broad in a lateral view; the upper maro-in is 

 unarmed, without a spine near the far end, the infero-internal margin carries a few finely- 

 aciculiform spinelets and a somewhat larger one at the distal extremity, the longitudinal ridoe 

 on the lower face and the infero-external margin are beset with small, acute granules, that 

 exist also here and there on the outer face like also on the ischium. Carpus short, nearly one 

 and a half as long as thick. Chela, 12,9111111. long, almost one and a half as lono- as the 

 carapace and almost twice as long as the merus, slender, six times as lono- as broad 

 (high), the greatest breadth situated at the proximal fourth; the palm, that measures nearly 

 two-thirds the length of the chela, viz. 8,3 mm., is slightly compressed, about in the proportion 

 of 4 : 3 and it decidedly tapers towards the articulation of the fingers. Both the upper and the 

 lower border of the palm are obtuse, fringed, like in other species, with hairs at the inner side 

 and they are entire; the slightly convex, outer and inner surfaces show no carinae, rido-es 

 or depressions at all, but they are finely granulate, especially the inner. Fingers measurino- 

 little more than one-third the length of the chela and three-fifths that of the 

 palm, slender, compressed and smooth; dactylus carinate above, obtusely pointed and a little 

 shorter than the immobile finger, the tip of which is more acute; the dactylus bears in the 

 middle an elongate, concave prominence that fits into a hole of the other fïno-er. 



The large cheliped of the female resembles that of the male, but is shorter, the chela 

 being hardly longer than the carapace. 



270 



