Rev. Canon A. M. Norman on British Mysidse. 263 



CORRIGENDA. 



(1) In the first part of this paper, in the Table of Distribution, p. 145, 



for " Synmysis " read " Macromysis.^' 



(2) At p. 144 and pp. 149-152 passim, for "Cytifhilia " read "Sin'ella." 



(3) At pp. 147 and 149, for "Subfam. Cynthiliina3" read " Subfam. 



Siriellinae." 



These corrections are necessary from the fact that I find that the genus 

 Siriella does not date from 1852, as had been supposed, but was first 

 instituted by Dana in his preliminary descriptions in ' American Journal 

 Sci. and Arts/ ser. 2, vol. ix. p. 4, and that this paper appears to have 

 been published in the early part of 1850 ; whereas the Brit. Mus. Cat. 

 Brit. Crustacea, which bears J. E. Gray's name, but was " prepared by 

 Mr. Adam White," is signed "June 15, 1850," and must have been 

 published subsequently to that date. 



EXPLANATION OF THE PLATES. 

 Plate IX. 



Fiy. 1 . Mysidopsis hibernica, Norman. Antenna and its scale. 

 Fig. 2. „ ,, „ Inner uropod. 



Fiy. 3. ,, „ „ Telson. 



Fig. 4. „ „ ,, Extremity of telson, more mag- 



nified. 

 Fig. 5. „ „ ,, Terminal Joints of outer branch 



of fourth pleopod of the male. 

 Fig. 6. Heteromysis formosa, S. I. Smith. Antennule and eye. 

 Fig. 7. „ „ ,, Antenna and scale. 



Fig. 8. „ „ „ Terminal joints of a posterior 



leg. 

 Fig. 9. „ „ „ First leg. 



Fig. 10. „ „ „ Uropod. 



Fig.U. „ „ „ Telson. 



Plate X. 



Fig. 1. Schistomysis Parkeri, Norman. Antennule, (S . 



Fig. 2. ,, „ „ Antennule, 2 • 



Fig. 3. „ ,, „ Antenna and scale. 



Fig. 4. ,, „ „ Uropods. 



Fig. ■ 5. „ „ „ Telson. 



Fig. 6, „ „ „ Fourth pleopod, d. 



Fig. 7. „ „ „ Endopodite of a leg. 



Fig. 8. Mysidopsis gibhosa, G. O. Sars. End of telson. 



Fig. 9. „ angusta, G. O. Sars. End of telson. 



Fig. 10. Erythi'ops elegans, G. 0. Sars. Telson. 



Fig. 11. „ sej-rata, G. O. Sars. Antennal scale. 



Figs. 12, 13. Neomysis vulgaris, J. V. Thompson. Abnormal develop- 

 ments of the end of the telson. 



The figiu-es in the foregoing Plates are of parts magnified to various 

 degrees of enlargement. 



