no. 2065. THE CRUSTACEA EUPHAUSIACE A— HANSEN. 109 



Sta. 2151. April 10, 1884. Caribbean Sea. Lat. 15° 28' 39" N.; 

 long. 80° 36' W. 1 specimen (immature male). 



The animals recorded with some doubt by Ortmann in 1894 as N. 

 microps G. O. Sars, do not belong to this species, but to N. difficilis 

 H. J. Hansen (see above), N. gracilis H. J. Hansen, and N. tenella 

 G. O. Sars. 



Distribution. — I have seen specimens from the Atlantic, the Indian 

 Ocean (Siboga), and the tropical east Pacific (the Harvard paper), 

 but a more detailed general account must be postponed. 



39. NEMATOSCELIS GRACILIS H. J. Hansen (1910). 



1910. Nematoscelis gracilis H. J. Hansen, Siboga Exp., vol. 37, p. 109, pi. 15, 



figs. 3a-3<7. 

 1912. Nematoscelis gracilis H. J. Hansen, Mem. Mus. Comp. Zool., vol. 35, No. 4, 



p. 261, pi. 10, fig. 2a. 



Occurrence. — No specimen was found among the unnamed material, 

 but most of the specimens from the tropical east Pacific recorded in 

 1894 by Ortmann as N. microps G. O. Sars, belong to N. gracilis, and 

 the same is the case with the specimens referred by him to N. tenella 

 G. O. Sars: 



Sta. 3416. April 11, 1891. Lat. 16° 32' 30" N.; long. 90° 42' 40" 

 W. 300-0 fathoms. 1 specimen. 



Lat. 12° 34' N.; long. 97° 21' W. 4 immature specimens. (Re- 

 ferred to N. tenella by Ortmann.) 



Sta. 3414. April 8, 1891. Lat. 10° 14' N.; long. 96° 28' W. 

 200-0 fathoms. 1 specimen. 300-0 fathoms. 5 specimens. 



Hyd. 2619. March 11, 1891. Lat. 7° 31' N.; long. 78° 42' 30" 

 W. 1,000-0 fathoms. 1 specimen. 



Sta. 3382. March 7, 1891. Lat. 6° 21' N.; long. 80° 41' W. 200 

 fathoms; closed part of Tanner net. Many specimens. 



Hyd. 2627. March 25, 1891. Lat. 0° 36' N.; long. 82° 45' W. 

 1770-0 fathoms. 1 specimen. 



Hyd. 2628. March 26, 1891. Lat. 0° 13' S.; long. 84° 52' W. 

 200-0 fathoms. 2 specimens. 



Distribution. — This species was known from the Indian Archipelago 

 (Siboga) and the tropical East Pacific (the Harvard paper); in 1912 

 Tattersall enumerated a number of places in the Indian Ocean. 



40. NEMATOSCELIS TENELLA G. O. Sars (1883). 



1910. Nematoscelis tenella H. J. Hansen, Siboga Exp., vol. 37, p. 110, pi. 15, figs. 



4a-4m. 

 1912. Nematoscelis tenella H. J. Hansen, Mem. Mus. Comp. Zool., vol. 35, No. 4, 



p. 263, pi. 10, figs. 3a-3c. 



Occurrence. — Among the unnamed material is a single specimen 

 from the northwest Atlantic: 



Sta. 2565. August 28, 1885. Lat. 38° 19' 20" N.; long. 60° 02' 

 30" W. 1 specimen (male). 



