HOPLOPIIORID^E. 



159 



near the distal end. The inner bUvde is a trifle shorter than the telson ; it is 

 also fringed along iis whole margin with long hairs. 



Dimensions of a female specimen : length of body, rostrum included, 

 139 mm. ; length of rostrum, 35 nun. ; length of carapace, rostrum included, 

 61 mm. ; length of telson, 20 mm. ; length of antennule, 267 mm. ; length 

 of antenna, 315 mm. ; length of antennal scale, 19 mm. 



This species, like all the Nematocardni, is very fragile. The long and 

 slender rostrum is often broken off during life, and the attempt to restore it 

 sometimes results in an abnormally small and otherwise monstrous rostrum, 

 which might easily be mistaken for a specific character if ample material 

 were not at hand. 



Family HOPLOPHORID.E. 



Oplophorina Kingslet, Bull. Essex lust., X. 68, 1878 ; id., Proc. Acad. Nat. Sci. PlUa., 1879, p. 426. Par- 

 tim ; of. KiNGSLEY, Bull. Essex lust., XIV. 127, 1883. Type genus, Oplophorus M. Edw. 



Ephyriiue Smith, Bull. Mus. Comp. Zool., X. 66, 1882 (partim, Eiimiersia (= Nematocarcinus) cxcl.) ; 

 id., Ann. Rep. U. S. Pish Comm. for 1882, p. 372, 1881-. ? = Ephyrina Kingsley, 1879 (type genus, 

 Miersia Kingsl., =Ephyra Roux, a genus not sufficiently known). 



Ephyridce G. 0. Sars, Norske Nordhavs-Exped., Crustacea, I. 35, 1885. 



Miersiida (nom. nov. vice Epht/rida) Smith, Ann. Rep. U. S. Fisli Comm. for 1885, p. 667, 1886 ; Wood- 

 Mason, Ann. Mag. Nat. Hist., 6th Ser., VII. 194, 1891 ; Faxon, Bull. Mus. Corep. Zool, XXIV. 206, 

 1893. 



Acanthephyrid/p. {Campyhiwtus exc]-)+ Tfopioranda Bate, Rep. Challenger Maerura, pp. 481, 927, 1888. 

 Type genera, Actinthephyra A. M. Edw., et Tropiocaris Bate (= Ephyriim Smith). 



Acantkephyridre Wood-Mason, Ann. Mag. Nat. Hist., 6th Ser., IX. 358, 1892 ; Stebbing, Hist. Crust., p. 

 242, 1893 ; Ortmann, Decap. u. Schizop. der Plankton-Exped., p. 42, 1893. 



