374 APPENDIX. 



Three posterior pairs of perciopoda gradually increasing in length. 

 Pleopoda biramose ; rami uni articulate." — Bruzelius. 



1. Nicippe tumida. 



Nicippe tumida, Bntzelius, Skand. Amph. G'amtn. p. 99. f. 19. 

 " Superior antennae longer than the inferior. Dorsiun rounded ; 

 fourth segment of the pleon with the posterior margin armed with 

 two dorsal teeth. Gnathopoda subequal ; propoda oblong-ovate. 

 Posterior pair of pleopoda ha^^ng the rami equal. 



" Hab. Rare, at Drobak, Christian Gulf." — Bruzelius. 



Since the above has been in type, I have been so fortunate as to 

 find, among the Crustacea dredged last summer(18Gl) in the Shetlands 

 by Mr. Jeffreys, a single specimen of this species. 



Page 105. Monoculodes aflBnis (Stimpsoni). 



ffidiceros affinis, Bruzelius, Skand. Amph. Gamin, p. 93. f. 18. 



This species of Bruzelius so closely corresponds with M. Stimpsoni 

 of this Catalogue, that I think the name of the latter must be sunk 

 for that given to it by Bruzelius, as having priority of date. 



Page 125. Add another species : — 



4. Iphimedia Stimpsoni. 

 Iphimedia obesa, Stimpson, Proc. Acad. Nat. Sc. Philad, July 1855. 



" Robust, thick. Superior antennae longest, in length two-thirds of 

 that of the body, and with thick basal joints. Eyes very large, 

 subreniform, black. Gnathopoda subchelifonn, of moderate size. 

 Three posterior pairs of pleopoda slender, smooth ; ultimate pair 

 biramose. Telson one elongated scale. Colour crimson, with flake- 

 white blotches. 



*' Length 0-25 inch. 



" Hah. Australia, at Port Jackson. Found in circumlittoral zone, 

 on weedy and sandy bottoms." — Stimpson. 



Page 126. Add a new genus : — 



35 a. PEREIONOTUS. 



Pereionotus, Spetice Bate 8f Westwood, Hist. Brit. Sessile-eyed Crust. 

 p. 227. 



Resembles Phlias, except that the posterior pair of pleopoda ter- 

 minate in a single ramus. 



