210 AM PTIIPODA NORM ALIA. 



8. Gammarus Sitchensis. (Platk XXXVII. fig. 4.) IJ.M. 



Gammarus Sitchensis, Brandt, Sihirische lictse, Zool. i. p. 137. pi. G. 

 fig. 28. 



Sfitupso)), Crust, and Echiii.of Pacific Shorcnof N. Amer., Journ. 

 Bust. Soc. Kaf. Hist. vi. 1857. 



"With small spines on the dorsal portion of the third, fourth, fifth 

 and sixth segments of the pleon. Eyes very smaU. Superior 

 antenna) longer than the inferior ; flagellum longer than the 

 peduncle. Gnathojioda subcqual : first paii' a little the larger ; 

 propodos ovate, palm straight, slightly oblique ; second pair ovate, 

 palm slightly concave. Posterior pair of pleopoda longer than the 

 preceding ; rami subequal, lanceolate. 



Length half an inch. 



Hab. Sitka Isle, Russian America (Mlcldendorffand Wosnessenshi). 



The description and figure are taken from a specimen in the Mu- 

 seum of the Jardin des Plantes, sent by Professor Brandt. 



9. Gammarus Verreauxii. (Plate XXXVII. fig. 5.) 

 Gammarus Verreauxii, Edwards, Ann. des Sc. Nat. 



Having a sinus on the centre of the dorsal surface of the foui'th 

 segment of the pleon. Eyes ovate. Superior antennae about one- 

 fourth the length of the animal ; flagellum not so long as the 

 peduncle. Inferior antennae not so long as the superior ; peduncle 

 not longer than the peduncle of the superior. Gnathopoda of the 

 same form : second pair as large again as the fij'st, having the 

 propodos long-ovate, tapering ; palm the entire length of the in- 

 ferior margin, straight, superior margin slightly arcuate. Third 

 pair of pcreiopoda but slightly shorter than the fourth ; basa of 

 the last three pairs not much dilated. Penultimate paii' of pleopoda 

 considerably shorter than the preceding ; ultimate a Little longer 

 than the antepenultimate, rami equal. 



Length 1| inch. 



Hab. New Holland (31. Verreaux). 



The figure and description are taken from the specimen preserved 

 in the Museum of the Jardin des Plantes. 



10. Gammarus fasciatus. (Plate XXXVII. fig. 6.) B.M. 

 Gammarus fasciatus, Say, Proc. Acad. Nat. Set. Philad. i. part 2. 



Eyes round. Superior antennaj half as long as the animal ; flagellum 

 longer than the peduncle, not furnished -svith long hairs. Inferior 

 antennae shorter than the superior; peduncle reaching quite to 



