68 AMPniPODA NORMALIA. 



This short description is taken from Kroycr's figiu'c, and from 

 which our own is copied. 



Ilah. Greenland {Kroyer). 



7. Lysianassa Vahlii. (Plate X. fig. 9.) 



Lysiannssa Vahlii, Ki-ot/er, Gron. An]fip. pi. 1. f. 1. 



Echvar(h, Hist, des Crust, t. iii. p. 21. 

 Anoiiyx \'ahlii, Kriiyer, Voyage en ocand. pi. 14. f. \n. 



Liljebory in Of vers, af Konyl. Vetensk. Akad. ForhamU. 1851, 



Much like L. Krdyeri, but having no dorsal sinus upon the pleon. 

 Eyes oval. Superior antennae short ; inferior not longer than the 

 superior. Coxa; veiy deep. Coxa of the fourth pair of pcreiopoda 

 produced inferiorly and posteriorly to quite half the breadth of the 

 fifth. 

 Hah. Greenland {Kroyer). 



I have seen no specimen of this species. Kroyer appears to hesitate 

 as to whether it should be referred to Anonyx or to this genus. 



8. Lysianassa Atlantica. (Plate X. fig. 10.) B.M. 



Gammarus Atlanticus, Edio. Ann. Sc. Nat. t. xx. 

 Lysianassa Atlantica, Edw. Hist, des Crust, t. iii. p. 22. 

 Lysianassa marina, Spence Bate, Synops. Brit. Amph., Ann. Nat. Hist, 

 Feb. 1857. 



TMiite, Hist. Brit. Crust, p. 168. 

 Opis typica, TVTiite, Hist. Brit. Crust, p. 165 ; Cat. B.M. 1850, p. 49. 



Superior antenna; having the fii'st joint of the peduncle thick ; upper 

 surface arcuate ; second and third joints very short ; flagellum not 

 so long as the peduncle. Inferior antennae haAing the peduncle 

 reaching to the extremity of the peduncle of the superior ; flagellum 

 twice as long as the peduncle. Fii'st pair of gnathopoda long, 

 slender, having the carpus and propodos subequal. Second pair 

 of gnathopoda having the carpus a little longer than the propodos ; 

 palm at right angles with the inferior margin, slightly cihate; 

 upper margin of propodos fringed with several long hairs. Pereio- 

 poda subequal ; posterior pair of pleopoda lanceolate, clean. 



Length j^ths of an inch 



The specimen in the Collection of the Jardin des Plantes, from 

 which Milne-Edwards described the species, and which I have had 

 an opportimity of examining, was found in the Atlantic Ocean. 

 That from which the figiue is taken was dredged in Plymouth Sound. 

 Mr. Edward, the industrious naturahst of Banff, has sent it to me 

 from that locality. 



Hah. Ireland, Strangford Loch {Mr. W. Thompson). 



