SQUILLOIDEA. 623 



Colour, grass-green ; eyes, brownish. Length, three inches. The 

 specimens here referred have five prominent costae on the caudal seg- 

 ment, besides two less distinct adjoining the median one. Just inside 

 of the base of the outer of these costse, between it and the next, there 

 is a small tubercle. The moveable spines of the posterior margin of 

 this segment are slender; and between these spines and the next 

 spines, as well as between these last and the next, there are two 

 unequal lobes, the outer quite small and tooth-like. The outer margin 

 of the caudal appendage bears seven or eight moveable spines, besides 

 a long apical one, which is but little shorter than the oval plate which 

 forms the extremity of these organs. 



The hand has the inner margin fine denticulate, and armed with 

 three moveable spines. The anterior pair of feet terminates in a 

 hand, with a small finger. 



We suspect that this species is identical with Owen's S. ciliata (Voy. 

 Blossom, pi. 27, fig. 5); although, in his description, he makes the 

 anterior feet "terminate in a flattened oval plate, unarmed and 

 ciliated." 



GENUS GONODACTYLUS. 

 GONODACTYLUS TRISPINOSUS, White. 



Feejee Islands. 



Length, one and a half inches. A longitudinally corrugate penult 

 abdominal joint, a slightly oblong caudal segment, having three 

 rounded prominences, and the surface corrugate towards the posterior 

 margin, which margin is but sparingly lobed, and the three spines of 

 the antennary plate, one at middle, and one at either angle, are cha- 

 racteristics readily distinguishing this species. 



G. trispinosus, A. WHITE, Voyage of Erebus and Terror, pi. 5. 



GONODACTYLUS CHIRAGRA (Fair.), Latr. 

 Plate 41, fig. 5 a, specimen from Tongatabu; 5 b, hand. 

 Tongatabu ; Feejee Islands ; Balabac Straits, north of Borneo. 



