50 Addison E. Verrill, 



as well as from the other Atlantic species, but he probably counted 

 the anterior carinal tooth as a rostral tooth. It agrees more nearly 

 with dorsalis than with any other. There seems to be no good 

 reason for referring it to 5\ brevirostris Edw. For parts of the 

 latter, see our figures (pi. xx, figs. 2-20; 6-6k). 



Off Cape Hatteras, 16 fathoms (Smith) ; Fort Jefferson, Fla. 

 (type locality). Off Key West, 45 fathoms, station 2318 (Alba- 

 tross) ; off Havana, 230 fathoms, station 2321 (Albatross) ; 

 Sabanilla, U. S. Columbia, (Albatross) ; Bermudas (Verrill) ; 

 Porto Rico, Mayaguez Harbor, 12 to 18 fathoms ; Pensacola, Fla. ; 

 Gulf of Mexico, 30 to 88 fathoms (Rathbun). Many localities 

 in the West Indies, in 36 to 120 fathoms (Blake Exped.). Other 

 West Indian species of the genus are likely to occur at the 

 Bermudas when looked for at suitable depths. 



Family SERGESTID5C Dana, 1852. Phosphorescent Oceanic Shrimp. 



Sergestida? Bate, op. cit., 1888. Stebbing, Hist. Crust., p. 221. Faxon, 

 op. cit., p. 208, 1895. Ortmann, Plankton Exped., p. 29, 1893. 



This family includes many oceanic species, often noteworthy on 

 account of their bright colors or their brilliant phosphorescence. 

 The rostrum is usually very small and simple. The eyes are often 

 very large and prominent, on long stalks, but they are sometimes 

 much reduced. The legs are very slender. The chelae are lacking 

 on the first pair of legs, which are usually short, and sometimes 

 also on the second pair; on the third pair they are very minute. 

 The fifth legs are usually very small and slender, and often, also, 

 the fourth pair ; one or both may be rudimentary or absent. The 

 legs bear long plumose hairs. Branchiae are much reduced, some- 

 times lacking ; never present on all the legs. The species undergo 

 a complicated metamorphosis and have very singular larval forms 

 which are often taken in surface nets. 



Sergestes H. M.-Edw., 1830. 



Several species of Sergestes have been taken in the North 

 Atlantic Ocean, some of them in the region of Bermuda. Any of 

 these are likely to occur near the Bermuda shores. The species 

 are free-swimming forms, widely distributed, and are often taken 

 at or near the surface, away from the land. Though often 

 brought up by the deep-sea dredges and trawls, apparently from 



