]\Ir. E. J. Miers on Spitzbergen Crustacea. 131 



threads of silicifying earcode all run together into solid fibri", 

 thus enveloping the sexradiate spicule, c, in the centre, which is 

 otherwise hollow ; d, spine or arm of sexradiate incrt^ased in size 

 bv the silii-ifyinp sarcode, but not enveloped in the fibre ; e, end 

 of vertical arm of sexradiate truncated ; /, rosette ; ij, bundle of 

 minute hair-like undulating aceratea, frequently tricurvate or 

 bow-shaped ; h h, cylindrical intervals or channels between the 

 trapezoids ; i, lantern-like hole, reduced to eight in each trapezoid. 

 S'.l?. Although lx)tli these figures, viz. Jl nnd 10, are drawn 

 upon the same scale (viz. 1-L'4th to l-180<)th inch), it must not 

 be assumed that the trapezoids are as regularly formed through- 

 out the ninss ; hence they must, to a certain extent, be viewed 

 more or less us diagrammiitic. 



Fig. 11. The same: oblique view of the trapezoid of fig. 9, showing all 

 the anus of the sexradiate spicule within the reticulated threads 

 of silicifying sarcode. 



Fig. 12. The same : diagram of trapezoid to show the sexradiate cross aa 

 it exists in the trapezoid of fig. 10. 



Fig. 13. The same : staple form of dermal sexradiate, scale l-24th to 1- 

 1800th inch. 



Hg. 14. The same : rosette, more mngnified. 



Fig. l-'). The same : tricurvates, more magnified. 



Fig. 1 0. The same : large sexradiate spicule of the fringe. 



Fig. 17. The same : fragment of large uneven spicule in the fringe. 



X. — List of the Sjieci'es of Crustacea collected hy the Rev. A. 

 E. Eaton at Spitzbergen in the Summer o/"1873, with their 

 Localities and Notes. Bj Edward J. Mier.s, F.L.S., 

 F.Z.S., Assistant in the Zoological Department, British 

 Museum. 



A SMALL collection of Cnistacea, made by the Rev. A. E, 



Eaton during a voyage with B. Leigh Smith, Esq., to Spitz- 

 bergen, in 1873, was presented to the Trustees of the British 

 Mu.seum in the following year. The species are most of them 

 well-known Arctic forms ; but the specimens generally are of 

 a large size and in an excellent state of preservation. The 

 value of the collection is further enhanced by the exact loca- 

 lity of nearly every specimen being recorded. 



The crustacean fauna of the Scandinavian and adjacent 

 arctic seas appears to have been investigated more thoroughly 

 than that of any other great region of the globe, if we may 

 judge from the amount of literature relating to it ; for in the 

 Introduction to his 'Skandinaviske og Arktiske Amphipoder' 

 (Christiania, 4to, 1872), A. Bocck enumerates no less than 273 

 publications in whieli animals of tliis order alone are referred 

 to in connexion witli this area. 



In 1863 A. V. Goes published a list of the Decapoda inha- 

 biting the region mentioned, with remarks on the geographical 



