REPORT ON THE STOMATOPODA. 53 



Size. — Males from two to three inches long ; females from two and one-half to four 

 inches long. 



Colour. — Males transparent, with small dark brown pigment spots uniformly distri- 

 buted, gi^ang the body a grepsh tint ; females more opaque and of a dark olive brown, 

 nearly black, colour. 



Remarks. — This species seems to be very closely related to Lysiosquilla polydactyla, 

 but there can be no doubt of its specific distinctions. 



Genus Pseudosquilla, Guerin. 



Diagnosis. — Stomatopoda with the sixth abdominal somite separated from the telson 

 by a movable joint ; the hind body smooth, convex, and narrow ; the dactyle of the 

 raptorial claw without a basal enlargement, and with few marginal spines or none ; the 

 submedian spine of the telson long, and tipped with movable spinules, with usually a 

 single secondary spinule, sometimes two, three, or four, between the submedian and 

 intermediate marginal spines ; the terminal joint of the first abdominal appendage of the 

 male imperfectly divided by a marginal notch into an inner and an outer lobe ; larva an 

 elongated narrow Erichthus, with a short narrow carapace, with the postero-lateral spines 

 near the dorsal middle line, and the lateral edges slightly or not at all infolded ; the telson 

 longer than wide, wdth long submedian spines ; the proximal joint of the exopodite of 

 the uropod with numerous spines, and the outer spine of the basal prolongation much 

 longer than the inner and lonojer than the telson. 



Pseudosquilla ciliata, Miers (PI. XV. fig. 10). 



Pseudosquilla ciliata, Miers, Ann. and Mag. Nat. Hist., scr. 5, vol. v. p. 108, pi. iii. figs. 7, 8. 



The Challenger collection includes two specimens of this weU-known species, a male and 

 a female, from 2 fathoms depth at St. Thomas, and also a male from the reefs at Honolulu. 



The raptorial claws, the spines of the telson, and the paddles and spines of the 

 uropods retain, in the alcoholic specimen, the bright cherry red colour which, according 

 to G. Clark, is exhibited by the living animal. The alcoholic specimens also have eye- 

 like spots of black pigment near the lateral edges of the third thoracic and first abdominal 

 somites, and another on the dorsal surface of the base of the telson on the middle Une. 

 The occurrence of this Pacific species at St. Thomas is a remarkable fact in the 

 distribution of the Stomatopoda, but it will probably be found to be widely distributed 

 throughout the Atlantic as well as the Pacific, for Von Martens records it from Cuba. 

 The specimens from St. Thomas agree perfectly in measurements as well as in most other 

 respects with the one from Honolulu. The only differences which I have been able to 

 detect are the following : the paddle of the exopodite of the uropod is about as long as 

 the second joint in the specimens from the Pacific, while it is a little shorter in the two 



