376 APPENDIX. 



continuing to the fourth segment of the pleon, eaeh segment being 

 produced posteriorly into an acute trianguhir tooth. Eyes large, 

 slightly oval, convex. Coxa; of the second and third pairs of 

 pereiopoda unusually large, as long again as the preceding, that 

 of the second produced inferiorly and anteriorly, of the third in- 

 feriorly and posteriorly into a sharp conical tooth (the coxa of the 

 second pair of pereiopoda is curved, that of the third is straight). 

 Gnathopoda subchelatc, moderately large. Antenna) subequal ; 

 inferior rather the longer, slightly surpassing half the length of 

 the animal." — Sars. 



I think there can be no doubt that this species belongs to the genus 

 Acanthonotus. 



Page 132. Dexamine Loughrini. 



I am induced, upon a reconsideration of this species, to consider it 

 as being a variety of AtyJus Sivammerdamii. 



Page 133. Add two other species : — 



6. Dexamine tridentata. 

 Paramphithoe tridentata, Bruzelim, Skmul. A7nph. Gamm. p. 74. f. 13. 

 "■ Cephalon furnished with a very small rostrum. Dorsum of the 

 pereion rounded, smooth ; first and second segments of the pleon 

 having the median posterior margin produced into an acute tooth. 

 Superior antennae much shorter than the long inferior. Gnatho- 

 poda having the propoda oblong-ovate and of moderate size. 

 Telson single, posterior margin truncated and toothed. 



" Hah. Shores of Finmark." — Bruzelitis. 



This species bears a close resemblance to D. tncuspis of Kroyer. 



7. Dexamine Vedlomensis. 



Dexamine Vedlomensis, Spence Bate 8f Westwood, Hist. Brit. SessUe- 

 eyed Crust, i. p. 242. 



Last seg-ment of the pereion as well as first four of the pleon dorsally 

 carinated and produced posteriorly into a large tooth. Inferior 

 antenna; with the peduncle having the last two joints very long, 

 subequal. 



Length \ of an inch. 



Hah. Vedlom Voe, Shetland {Rev. A.M.Norman, in whose collection 

 the specimen is preserved). 



