386 DB. W. M. TATTERPALL ON THE STOMATOPODA AND 



forwards to the apex of the antennal scale. The carpus is about one- sixth 

 longer than the merus and one and a half times the length of the hand. Ihe 

 palm is equal in length to the lingers. There are no ischial, ineral, or carpal 

 spines. The fingers are without teeth on their cutting-edges. The second 

 legs (PI. 28. fig. 15) extend beyond the antennal scale by one-half of the 

 carpus plus the whole of the hand. The proportions of the joints are as 

 follows : — Ischium 2 - mm., merus 2"3 mm., carpus 255 mm., palm 1*8 mm., 

 finger 1*6 mm. There are no ischial, nieral, or carpal spines. Both the 

 fixed and immovable fingers have on their inside margins a shallow oval pit 

 bounded by small teeth proximally and distally. 



This species clearly belongs to the subgenus Falciger, and if we attempt to 

 run it down with the aid of Borradaile's key to the species of the subgenus 

 we find that it would fall in Section I. by reason of the oval pits in the 

 fingers of the large chela, a peculiarity only noted in two of the species, 

 P. spiniferus, De Man and P. petitthouarsi (Audouin). From the former 

 species, P. ealmani is distinguished by the absence of supra-orbital spines 

 and from the latter by the long and slender form of the great chela, the 

 much greater length of the carpus of these limbs, and the absence of spines 

 on the first and second legs. 



It is possible, however, that the oval pits have been overlooked in other 

 species of the genus. If, therefore, we ignore Section 1. of Borradaile's key 

 and proceed to Section II., we find the nearest ally of P. ealmani in P, sey- 

 chellensis, Borradaile, from which it is distinguished by the shorter rostrum 

 and the longer pair of second legs. 



P. ealmani is very closely similar to P. demani, Kemp, 1915 a. The 

 general form of the body and the proportions of its various parts are very 

 much alike. But P. demani has a supra-orbital spine and has meral and 

 carpal spines on the second legs. Judging from Kemp's figure, P. demani 

 also has oval pits on the fingers of the chelae of the second pair of legs. 



Periclimenes sp. ? 



Localities. Station V. 0, two, 7-10 mm. Station VII. A, one, 7 mm. 



Uncertain, one, 13 mm. 



These specimens belong to the subgenus Falciger and to that group of the 

 species having a supra-orbital spine. The rostrum is longer than the 

 antennular peduncle and subecjual to the antennal scale. The formula is 



— , and the rostrum is concave from the base. Unfortunately the second 



legs are missing in all the specimens. I think they are almost certainly 

 the form recorded from the Red Sea by Nobili under the name of P . ensi- 

 frons, Dana, but as the second legs provide the characters for specific 

 determination it is not advisable to name these specimens. 



