REPORT ON THE AMPHIPODA. 1557 



Second Gnathopods differing little from the first ; the wrist with three teeth on 

 the hind margin, five teeth on the inner margin of the process, and the apical tooth ; 

 the hand not cmite reaching the tip of the wrist's apical tooth, having six teeth on its 

 inner margin. The dentate margins in both gnathopods have as usual some pectination 

 in addition to the dentation. 



Fifth Perseopods. — The terminal joints as figured by Claus, but not bearing the 

 same proportion to the first joint, which is much longer than all of them together. 



Pleopods. — Coupling spines very small, without any but the apical teeth ; joints of 

 the rami nine to ten in number. 



Uropods. — The inner ramus of the third pair is rather widened at a little distance 

 from the acute apex, in this respect not entirely agreeing with Claus' figure. 



Telson longer than broad, triangular, somewhat more acute at the apex than that 

 figured by Claus. 



Length, a quarter of an inch. 



Locality. — April 26, 1876, off St Vincent, Cape Verde Islands; lat. 16° 49' N., 

 long. 25° 14' W.; surface; surface temperature, 73°"2. One specimen. 



Remark. — The differences are too slight to admit of any reasonable doubt that 

 this is the species described by Claus from the neighbourhood of Naples. 



The following table shows the distribution of the genus Brachyscelus as Ulustrated 

 by the Challenger specimens : — 



1. April 26, 1876, off St Vincent, Cape Verde Islands; lat. 16° 49' N, long." 

 25 c 14' W.; surface. One specimen (Brachyscelus mediterranea, see p. 1556). 



2. Station 351, April 12, 1876 ; Atlantic, off coast of Africa; lat. 9° 9' N., long. 

 16° 41' W.; surface; surface temperature, 81°"8. 



3. Station 103, August 22, 1873; Tropical Atlantic; lat. 2° 52' N, long. 17° 0' W.; 

 surface-net, 100 fathoms; surface temperature, 77°. 



4. October 5, 1873, South Atlantic; lat. 29° 1' S., long. 28° 59' W.; surface, night; 

 surface temperature, 6.3° - 2. 



5. Station 319, February 12, 1876; South Atlantic; lat. 41° 54' S., long. 54° 48' 

 W.; surface; surface temperature, 59°'5. 



6. February 6-7, 1875, south of Mindanao, Celebes Sea ; lat. 6° 20' N., long. 123° 18' 

 E.; surface at night. (Brachyscelus insequipes, see p. 1549.) 



7. April 3, 1875, North Pacific, south of Japan; lat. 24° 49' N., long. 138° 34' E.; 

 surface. (Brachyscelus cruscidum, $, see p. 1544.) 



8. Station 230, April 5, 1875 ; North Pacific, south of Japan; lat. 26° 29' N, long. 

 137° 57' E.; surface ; surface temperature, 68°'5. Young male, lower antennae not fully 

 developed, first joint of first gnathopods only slightly twisted. 



