G6 BULLETIN OF THE 



Somites. 



VII. 



VIII. 



IX. 



X. 



XI. 



XII. 



XIII. 



XIV. 



Total. 



Epipods, 



1 



1 



1 



1 



1 



1 



1 







CO 



Podc (branchiae, 







1 



























1 



Arthrobranchias, 











2 



1 



1 



1 



1 







6 



Pleurobranchise, 















1 



1 



1 



1 



1 



5 



12+(7) 



This species will evidently fall in Milne-Edwards's genus Iletcrocarpus (Ann. 

 Sci. Nat., 6 me series, XI. No. 4, p. 8, 1881), of which the description has been 

 published since the above was written, and it appears to be closely allied to, but 

 distinct from, his II. ensifer, from 218 fathoms near Barbadoes. Milne-Edwards 

 has however misapprehended the affinities of the genus, of which he says : 

 " Les crustaces du genre Heterocarpus off rent certaines analogies avec les Oplo- 

 phorus et, par d'autres caracteres, ils se rapprochent des Lysmates, des Hip- 

 polytes et des autres crustaces de la merne famille.'' The genus is very near 

 Pandalus, certainly far nearer than to Oplophorus (of which, however, I have 

 never examined specimens), or any other described genus. Heterocarpus should 

 be placed with the two or three genera into which the genus Pandalus as it now 

 stands must sooner or later be divided, and the species which I have here 

 described should then stand as Iletcrocarpus carinatus. 



BPHYRINiE. 



MIERSIA KlNGSLET. 



Ephyra Roux (nom. prseoc). 



As far as I know, the only described species properly referred to this genus 

 are M. pelagica and punctulata (Risso sp.), both apparently unknown to 

 modern carcinologists, and M. Hozckelii {Ephyra Haickelii Von Martens), all 

 from the Mediterranean. Ephyra compressa De Haan, placed in Miersia by 

 Kingsley, had already been referred to Atyephyra by Von Martens (Archiv 

 fur Naturgesch., XXXIV., 1868, p. 51, PI. I. fig. 4" to 4 C ), and is certainly not 

 closely allied to the species here described nor to M. Hcechelii. 



A new genus, Meningodora, described beyond, and Hymenodora G. 0. Sars, 

 are in most characters closely allied to Miersia, and are here referred to the 

 same subfamily, which has little affinity with the Atyidse, but is in many re- 

 spects much like Pandalus, and has, perhaps, still closer affinity with Oplophorus 

 or some of its allies. 



Eumiersia, a new genus described beyond, is in some respects intermediate 

 between the genera just mentioned and Pandalus, and is only provisionally 

 placed in this subfamily. 



