THE COPENHAGEN MUSEUM ANU OTHER SOUECES. 403' 



concave hind margin making an angle before it joins the oblique spinuliferous palm, 

 from which it is defined by a jKxhnar spine that antagonizes with the apex of the cvirved 

 finger. 



Second gnathopods. d ■ The second and third joints are distally lobed in front ; the 

 fourth has the apex broadly rounded ; the fifth is very short, with the little horny- 

 lookiug process from the hind margin on either side more conspicuous than usual ; the 

 sixth joint is large, widest where the short, smoothly curved, hind margin meets the long, 

 very oblique, Jiearly straight, spinulose palm, and narrowest at the hinge of the long 

 curved finger, which has a strong bulb at the base of its inner margin. 



Fif^si and second gnathopods. £ . Small, the fifth joint short, the sixth oblong, 

 slightly Avidened at the rather oblique, spinulose palm. The second pair are a little the 

 longer. 



Ferceopods. These are moderately robust. The finger has a minute inner setule. In 

 the last three paii's the second joint is broadly oval, nearly smooth on the hind margin, 

 the lower part of the wing in the fifth pair being broadly produced downward. 



First and second uropods. In both pairs there are lateral as well as ajjical spines on 

 both rami. 



Third uropods. The ramvis is a little shorter than the peduncle, with spiniiles at or 

 near the apex. 



Telson. The lobes have the proximal half of nearly uniform width, the distal half 

 triangular. 



Length. About one-sixth of an inch, 4 mm. 



Sab. Pacific and Atlantic. Specimens belonging to the Copenhagen Museum were 

 taken at various localities, at different dates, by sevex'al naturalists, as appears from the 

 labels, " ' Galatea,' 6. 8. 46. Rhdt." ; " 37° 32' N., 179° 43' E., 15. 3. 46. Reinhardt " ; 

 " 4° 30' N., 137° E., 8. 11. 75," " Caspersen " ; while in the Atlantic one specimen, 

 6, was obtained from the Sargasso Sea by " Eriis, 1861," and one specimen, $, 

 " 26° 20' N., 58^ 40' W., 6. 2. 96. Chr. Levinsen," the last locality also corresponding 

 with the Sargasso Sea. 



Htale diplodactyltjs, n. sp. (Plate 31 C.) 



The first and second side-plates are not very deep, and the first are but little widened 

 below. 



Eyes. Hounded, light-coloured in spirit. 



First antennce. Much longer than the peduncle of the second pair ; the peduncle is 

 short, the second joint much shorter than the first, and the thii'd than the second ; the 

 flagellum in the 6 has fourteen joints, in the $ nine. 



Second antennce. The last joint of the peduncle is rather longer than the penultimate ; 

 the flagellum in the c? has twenty-six joints, in the $ seventeen. 



First gnathopods. d . The second joint is rather short, narrow above, broad below ; 

 the fourth joint is distally squared, supporting the spinose hind lobe of the fifth joint, 

 which throws out this lobe beyond a short distal piece of its hind margin ; the sixth 



SECOND SERIES. — ZOOLOGY, VOL. VII. 56 



