22 AMPniPODA NORMALIA. 



gnathopoda lonp:, \\'ith ihc palm forming two-thirds of the inferior 

 margin. Third pair of porciopoda nearly as long as the fourth. 

 Length ^l^ths of an inch. 



Hah. New Zealand. Voyage of the Erebus and Terror {Sir 

 J. C. lloss). 



This species was fii'st described by Prof. Dana, who procured it, 

 diu-ing the United States' Exploring Expedition, " from moist soil 

 in the bottom of the extinct volcano of Tniamai, twenty miles from 

 the sea, and aboxit the joints of succulent plants." 



The specimen from which our figure is taken has been in the 

 British Museum for many years. It Avas found associated with 

 0. Telluris. 



10. Orchestia megalophthalma. (Plate III. fig. 8.) B.M. 

 Orchestia megaloplithalmus, Leach 3IS., andfVlnte's Cat. Crust. B.M. 



Male. — Eyes round, very large, almost meeting on the top of the head. 

 Upper antennae reaching quite to the end of the penultimate joint 

 of the lower. Lower antenna? ono-thii'd the length of the auimal ; 

 pediuicle rather longer than the flagellum, the last joint of which 

 is longer than the penultimate. The carpus of the fii'st pair of 

 gnathopoda longer than the propodos ; a prominent tubercle on the 

 carpus; the dactylos slight, and longer than the palm of the 

 propodos ; the propodos of the second paii" of gnathopoda having 

 the palm slightly roimded. Third pair of perciopoda scarcely half 

 as long as the two posterior. 



Length ^^^hs of an inch. 



Hah. Unknown. 



11, Orchestia Cloquetii. (Plate IY, fig. 1.) 



Orchestia Cloquetii, (Audouin) Saimjny, Egypte, Crust, pi. 11. f. 9. 

 Talitrus Cloquetii, Edw. Attn, des Sc. Nat. t. xx. p. 304 ; Hist, des 

 Crust, t. iii. p. 15. 



Guerin-Meneville, Exped. Sc. de Moree, t. iii. p. 1. 



Upper antennae reaching quite to the extremity of the penultimate 

 joint of the pedimcle of the lower. Lower antennae about one- 

 fourth the length of the animal ; the flagellum as long as the 

 pedimcle, of which the ultimate segment is shghtly longer than 

 the preceding. The fii'st pair of gnathopoda are short, and deve- 

 loped at the extremity into a minute hand. The second pair of 

 gnathopoda have the propodos but shghtly developed in breadth, 

 so that the hand is formed by the impinging of the dactylos upon 

 an articulation that is scarcely larger than the rest of the limb. 



Hah. Egypt (Savigmj). 



