3§4 



appearing only slightly concave at either side of the rostrum. The orbits are quite open anteriorly 

 and the eyes that reach with their corneae to the anterior margin of the orbits, are perfectly 

 visible from before; as in A. alpheopsides, the rostrum is not thickened inferiorly, but one 

 observes a narrow tooth that arises from between the eyes but that does not extend upward 

 as far as the rostrum. Pterygostomian angle obtuse. 



The telson is much more nar r o wed backward than that of A. paracrinitus or 

 A. alpheopsides and much resembles that of A. paralphcopsides Cout., as is proved by the 

 Table of measurements, but, while in A. paralpheopsides the telson is 4-times as long as the 

 posterior margin is broad, it is almost 5-times in A. tcnuipes. Spinules of the upper surface 

 o, 14 mm. long, situated as in A. paralphcopsides. 



In the larger specimen that unfortunately has lost all its legs, the antennular peduncle 

 is 5-times as long as thick in the middle; the 2 nd article, twice as long as thick, appears 

 one-fourth longer than the visible part of the i st , while the 3 rd or distal article appears 

 a little more than half as long as the 2 nd and one-fifth shorter than the visible part of the 

 i st . The other specimen only differs by the meclian article being about as long, but not longer 

 than the visible part of the i st . Stylocerite pointed, as long as basal antennular article. 



Basicerite with a very small spinule at the lower side. Carpocerite 4,2 — 4, 4-times as long 

 as thick, reaching beyond the tip of the antennular peduncle by half the 3 vd article. Scaphocerite 

 as in A. paracrinitus var. óeuga/ensis, but shorter, the blade reaching in the larger specimen 

 to the middle of 3 rd antennular article, while the terminal spine which is slightly curved inward, 

 hardly extends beyond the blade ; in the egg-bearing female the blade hardly reaches beyond 

 the median article, but the terminal spine is a little longer, reaching almost to the middle 

 of 3 rd article. 



Ischium of the large cheliped of the egg-bearing female unarmed. Merus slender, 5-times as 

 long as broad; upper margin unarmed at the apex, infero-internal margin with 4 small, movable 

 spinules that slightly increase in length from the i st or proximal to the 4 th and with a somewhat 

 larger, immovable spine near the extremity. The large chela, which is as long as the carapace, 

 viz. 4,42 mm., is just 4-times as long as high in the plane of the fingers and appears 

 therefore a little more slender than that of A. paracrinitus var. bcngaknsis (Coutière, 1. c. 

 Fig. 37#), with which it for the rest fully agrees, the palm being nearly cylindrical, unarmed 

 and without a transverse groove. Merus of the small cheliped 6-times as long as broad, with 

 2 very small, movable spinules and with a somewhat larger, immovable tooth near the apex. 

 The small chela resembles that of A. paracrinitns var. bengalcnsis\ it is but a little more 

 than half as long as the larger, the proportion being as 1 : 1,67; the fingers are one-fifth 

 longer than the palm, which is about 3-times as long as high and unarmed near the articulation 

 of the fingers. 



The 2 nd and the 4 th legs are missing in this female. The legs of the 3" 1 pair resemble 

 those of the quoted species, but they are still more slender. The relative climensions are: 

 merus 1,8; carpus i; propodus 1,44. Ischium with a strong movable spine near the base. 

 Merus 8, 5-times as long as broad, carpus 6, 4-times as long as thick at the distal extremity; 

 propodus 12-times as long as broad, with 4 or 5 spinules on the posterior margin and slightly 



