GAMMAKID.*;. UlU 



27. Gammarus verrucosus. •(Plate XXXIX. fig. 1.) 

 Gammnnis verrucosus, lirumU, 3Ii(ldemlorff' s Sibirische Reuse*. 



Picon having the dorsal surface thickly covered with short spinous 

 haii-s ; inforo-postcrior angle of the third segment produced into a 

 long upturned tooth. Eyes reniform. Superior antennoo having 

 the peduncle longer than the peduncle of the inferior ; flag(>]luin 

 (wanting). Inferior antennae having the inferior margin thickly 

 ciliated ; the last two joints of the peduncle subequal ; tlagcllum 

 scarcely longer than the peduncle. First pah- of gnathopoda mo- 

 derately large, having the carpus continuous with the propodos ; 

 propodos tapering, palm obliciue, composing the whole length of 

 the inferior margin, fringed with short spinous cilia. Second pair 

 of gnathopoda a little the larger, but resembling the first in form. 

 Pereiopoda subequal. Posterior pair of pleopoda (wanting). Tel- 

 son double, tipped with short spinous cilia. 



Length 1 inch. * 



Hah. Asiatic Russia ? 



The figure and description are taken from a specimen presented 

 to the Museum of the Jardin des Plantes by Professor Brandt. 



28. Gammarus Peloponnesius. (Plate XXXIX. fig. 2.) 



Gammarus peloponnesius, Guerin-Meneville, Exped. Sc. 3Ioree, Zuol. 

 sect. 2. p. 4.5. pi. 27. f. 5. 



Edwards, Hist, des Crust, iii. p. 48. 



Eyes reniform. Superior antennae nearly one-third the length of 

 the animal ; flagellum about the length of the pedimcle. Inferior 

 antenna) much longer than the superior ; peduncle nearly as long 

 as the superior antenna) ; flagellum as long as the peduncle. Gna- 

 thopoda subequal, alike : second pair a little the larger ; pro- 

 podos broad-ovate, palm imperfectly defined. Posterior pair of 

 pleopoda scarcely reaching beyond the preceding. 



Length 1 inch. 



Ilab. Grecian Archipelago yGiierin-MenevUle). 



The shortness of the superior antennse in relation to the inferior 

 pair, together with the size of the gnathopoda, suggest a doubt as to 

 this species being a true Gammarus ; but having seen only the figure 

 in M. Guerin-Meneville's great work (from which the one in this is 

 taken), I am induced to follow Milne-Edwards, who has arranged it 

 among those species which ])()ssess fasciculi of spines upon the dorsal 

 portion of the fourth and fifth segments of the plcou. 



* I am indebted to the kindness of Prof. M.-Edwurds for the use I have made 

 of tliis work, but buiiif^ unable to procure it in ]ui;,'laiHl. w\ i|U(jtatioiis are nut 

 so complete as 1 could have desired. 



