nKCHKSTID.K. 11 



Interior anteiinie half us long us the uiiimul ; the uUiniute seg- 

 ment of the peduncle longer than the penultimate. Fir.st pair of 

 gnathopoda vcr}' long. 



This animal can only be pro\-isionally received into this gcnuH, 

 as tlic description i.s taken from the rigure of a female given by 

 Dana, ^^'llen the male is known, we shall be able to ascertain its 

 time character. There appears to be no insunuountablc barrier to 

 its being a variety only of TaJitrus hrevicornis, from wliieh the descrip- 

 tion hardly differs in a specitic degree. 



llab. Bay of Islands, New Zealand {Dana). 



2. Orchestoidea scabripes. (Plate I. fig. 3.) 



Megalorcheslia scabripes, Stiitipsun, Journ. of Boston Sac. of Nut. Hist. 



vol. vi. 

 Orchestia (Talitrus) scabripes, Dana, U.S. Explor. Exped. p. 860, 



pi. 57. f. 4. 



" Male. — Body smooth. Coxae rather large, fifth hardly shorter than 

 foiu'th. Eyes large, a little reniform. Inferior antennae very 

 long, much longer than body, last joint of base more than twice 

 the preceding in length, flagellum longer than the base, twenty- 

 to twenty-two-jointed, the joints long, the setae shorter than 

 the diameter of the joints. First pair of gnathopoda, third and 

 following pairs of pereiopoda scabrous over the surface >\'ith 

 minute spinules, and these legs, excepting first pair of gnathopoda, 

 ha%'ing also some longer spinules or setae ; first pair of gnathopoda 

 simply unguiculate ; the claw quite small, one-third the pre- 

 ceding joint in length ; second pair with a very large subtrian- 

 giilai- hand, the palm oblique, scabrous, and having an emar- 

 gination adjoining the base of the dactylos, dactylos long and veiy 

 much cuiTed ; first and second pairs of pereiopoda subequal ; 

 thi-ee posterior pairs gradually increasing in length ; carpus nearly 

 straight. Candid stylets with numerous setaj, outer branch of first 

 pair naked. 



" Length eleven to twelve lines." 



Huh. Puget's Sound (Stimpson ; Dana). 



3. Orchestoidea Fischerii. 



Orchestia Fisclierii, luhc. An/i. dcs aS'c. Kat. t. ii. sp. 362. 

 (hierin, Iconoyraph. Crust, pi. 26. f. 3. 

 E(hv. IRst. (h's Crust, t. iii. j). 19. pi. 29. f. 4. 

 Guerin, Exp. Sc. Mor<-<'. 



Male. — Eyes small and round. Superior antenna) very .short, broad 



at the ba.se. Inferior antennae about one-third the entire length 



of the animal ; the penultimate articulation of the peduncle very 



shoil ; (he ultimate about three times as long as the preceding. 



