Rev, A. M. Norman's Nutes on British AmpMpoda. 135 



much smaller. The fifth has four teeth — two on each side — 

 of which the exterior is the larger, and between them an 

 articulated spine ; the sixth segment sometimes bears a pair of 

 small tubercles or minute spines at the base of the telson. The 

 infero-posteal angle of the epimera of the third segment of 

 the pleon is greatly produced, upturned, very acute, and 

 strongly toothed on both margins. 



The armature of the earlier segments of the pleon is subject 

 to some variation. Bate's figure of the type in Cat. Amphip. 

 Brit. Mus. represents a remarkably abnormal form, the first 

 segment of the jdeon having five and the second seven teeth ; 

 but much latitude must be allowed for variation in the dorsal 

 armature of members of this genus. 



In the female the second gnathopods are nearly similar in 

 form to the first, but larger, and it is without the fur which 

 clothes the front margin of meros, carpus, and hand in the 

 first pair. 



Bah. Salcombe, Devon ; Falmouth; Guernsey [A. M. N.)] 

 North-east Scotland [Dr. Day) : Mus. Norm. Plymouth 

 [Parjitt). 



JJistrihution. Boulogne {Paris Museum) ; Western France 

 {Chevreauoc) ; Azores {Th. Barrois). 



4. Melita dentata (Kroyer). 



1842. Gammarus dodatus, Kroyer, Nat. Tidskr. vol. iv. p. 159. 



1854. Gammarus purimrahcs, Stimpson, Invert, of Grand Manan, 

 p. 55. 



1855. Gammarus Kroyeri, Bell, App. to Belcher's Last Arctic Voyage, 

 p. 405, pi. xxxiv. tig. 4. 



1859. Gammarus dentatus, Brnzelius, Skand. Amphip. Gamm. p. 61. 

 1802. Meoamcera derxtata, Bate, Cat. Amphip. Brit. Mus. p. 225, 



pi. xxxix. tig. 4. 

 1862. Megumcera Kroyeri, id. ihid. p. 229, pi. xl. fig. 4. 

 1865. Gammarus dentatus, Goes, Crust. Amphip. Gamm. maris 



Spetsb. p. 14, tig. 29 (not fig. 29'). 

 1870. Melita dentata, Boeck, Crust. Amphip. bor, et arct. p. 131. 

 1872. Melita dentata, Boeck, De Skand. og Arkt, Ampliip. p. 389, 



pi. xxiii. fig. 10. 

 1884. Melita dentata, S. Schneider, Crust, og Pycnogon. iudsamlede i 



Kvsenangsfjorden, 1881, p. 113. 



Antennules : first joint with a long spine at the lower side 

 of the distal margin, second joint much more slender and 

 longer than first ; third one third length of preceding and 

 equal to two first of flagellum ; accessory flagellum of four long 

 joints. Antennae shorter than antennules, but peduncle 

 longer than that of antennse, its last two joints subequal; 

 flagellum about equal to last joint of peduncle in length. 



