42 THE VOYAGE OF H.M.S. CHALLENGER. 



and the eyes are directed forward, side by side, and swollen near the base. The first 

 antennse are about equal to ^ (^nj) of the total length of the body, and their somite 

 ends dorsally in a pair of acute spines which point almost directly forward. The 

 flao-ellum of the second antenna, including the shaft, is more than f (|^) as long as the 

 first, and the scale is only ^V ^s long as the animal. The width of the carapace 

 between the antero-lateral angles is about half (^|~) of its greatest width and about ^ 

 (^) of its length. The dactylus of the raptorial claw of the second maxilliped is armed 

 with five acute curved teeth, which are finely serrated on their outer edges and increase 

 uniformly in length distally. The second joint has three movable spines on its inner 

 margin, and the pectinations on its outer margin are arranged in an undulating line, 

 with a convexity under each tooth. The appendages of the three pairs of exposed 

 thoracic limbs are strap-shaped and dilated at their tips. The first thoracic somite is 

 entirely exposed dorsally ; the second ends laterally in acute spines which are straight 

 and transverse ; and the lateral edges of the third and fourth are rounded, with the 

 postero-lateral angles of the fourth a little more acute than the antero-lateral angles. 

 The fifth is obliquely truncated behind. The endopodite of the first abdominal 

 appendage of the mule is broad and rounded (PI. II. fig. 5), and the outer lobe a 

 of the terminal joint is sub triangular, and much larger, but shorter, than the inner, 

 which is separated from it by a suture. The fixed limb of the forceps e is as long as the 

 movable limb h, and it ends in two hooks on its internal edge, one of which points 

 towards the tip and the other towards the base of the appendage. 



Habitat. — Amboina, 15 fathoms; one male. 



Remarks. — This species bears a close resemblance to Chhrida decorata, Wood-Mason, 

 from the Andamans, and to Chlorida microphthalma, Eydoux and Souleyet {Squilla 

 microplithalma, Milne-Edwards), from India, but it is readily distinguished from the 

 former by the fact that its telson is smooth below, and with scattered rounded tubercles 

 above, while the telson of Chlorida decorata is described as vermiculated above and 

 below by granulated ridges. 



The presence of four instead of five teeth on the dactyle of the raptorial claw, and 

 the shortness of the rostrum, distinguish it from Squilla (^Chlorida) microphthalma, as 

 briefly described by Milne-Edwards ; and the presence of five teeth on the rajDtorial claw, 

 of long acute spines on the lateral edges of the second thoracic somite, and the fact that 

 the postero-lateral angles of the first four abdominal somites are obtuse, distinguish it 

 from Chloridella microphthalma {depressa) of Miers. The outline and dorsal surface of 

 the telson are also quite difierent from Miers' figure, while the whole anterior end of the 

 body, especially the rostrum and eyes, is so difi"erent from his figure that there can be 

 no doubt of its distinctness. 



The genus Chlorida, Eydoux and Souleyet {Chloridella, Miers) is characterised by the 

 fact that the eyes are constricted at the tip and dilated near the base. It includes four 



