■.the telson, the roundt'd end just projecting beyond the eniargina- 

 :tion of the segment ; the equally long outstanding outer branch 

 is apically acute and usually (though not in the specimen figured) 

 rather sickle-shaped at the end- 



The colour (in formalin) long retains bright orange red trans- 

 verse bands, often interrupted in the middle^ especially in the 

 pleon being limited to the extent of the transverse sutures. 



Lengthy 195 mm. Breadth, 9.5 mm. 



Locality : — Vasco de Gam a Peak S. 75° E. 13^ miles, at a depth 

 -of 166 fathoms. 



The specific name refers to the prominence of the epistome. 



G]<:n- : Cymodoce, Leach. 



1814. Cymodocc, Leach, Edinb. Encycl, vol 7_, p. 433. 



1815- Cvmodicc, Leach, Trans. Linn. Soc- London, vol. 11, p- 

 ■368. 



1816. Cymodicc- Leach, lincycl. Bnt., Art. Annulosa, p- 427. 



1818. Cyniodoceih Leach, Dictionnaire des Sciences Naturelles, 

 vol. 12, pp. 341. 342. 



,i868- Cymodocca, Bate & Westwood, Brit. Sessile-eyed Crust- 

 acea, pt. 20, vol. 2, p. 425. 



1891. Cyvindocca, Ives, Proc. Acad. Philad., pp. 188, 194. 



1893. Cymodocc, Stebbing, History of Crustacea, p- 362. 



Leach, not content with using three different forms of the name 



•of this genus, in the Linnean Transactions misquotes the earliest 



iorm of' it as Cxmodvcc. 



CvMODOCE UNCINATA, U- sp. 



Pi, ATE 14. 



The head and per?eon have no very striking peculiarities, but 

 ;the tip-tilted pleon is characteristic. In large specimens its sur- 

 face is rougher than that of the rest of the body, as if covered 

 with minute hexagonal crystals. Its first division extends 

 laterally beyond the side-plates of the seventh perseon segment, 

 having the boundary line of its own first segment almost con- 

 cealed- Of the three followino- centrally coalesced segments the 

 first is the broadest, and has the longest lateral margin, but does 

 not overlap the others ; thf-lasthas two conspicuous submedian 

 teeth projecting over its hind margin- The telsonic segment 

 carriestwo large, somewhat carinate, submedian bosses,beyond 

 which it is depressed and narrows rapidly to the trifid apex, the 

 centre piece of which is faintly trilobed and carries on its upper 

 ■surface a reverted lobe or tooth, forming the hook to which the 

 ;specific name refers. 



