MUSEUM OF COMPARATIVE ZOOLOGY. 107 



Siriella thompsoni (Milne-Edwards). 



G. 0. Sars, Chall. Schiz. 1885, p. 205, PL XXVI. figs. 1-24. 

 Ortmann, Plankton Exp. 1893, p. 23. 



" Survey stations " (between San Francisco and the Sandwich Islands) : — 

 74. Surface. Lat. 30° 4' 30" N. ; Long. 133° 56' 30' W. 

 133. Surface (females only). Lat. 32° 35' N.; Long. 135° 3' W. 

 165. Surface (males only). Lat. 30° 23' N.; Long. 180° 26' 30" W. 



Geographical Distribution. Tropical and subtropical seas, surface ; 

 Atlantic, Pacific, and Indian Oceans. 



Siriella gracilis Dana. 

 Cf. G. O. Sars, Chall. Schizop. 1885, p. 209, PI. XXXVI. fig. 25-28. 



Galapagos : Charles Island, surface. 



13° 33' 30" N.; 97° 57' 30" W. 8 p.m. Surface. (Between Galapagos 

 and Acapulco, about 250 miles S. E. of Acapulco. 



Geographical Distribution. Restricted up to the present to the Tropical 

 Pacific. All the specimens were taken at the surface of the sea. 



Euchsetomera typica G. O. Sars. 



G. O. Sars, Chall. Schiz., 1885, p. 211, PL XXXVII. figs. 1-20. 

 Ortmann, Plankton Exp. 1893, p. 23. 



Hyd. 2619. Surface to 300 fathoms. (Off Galera Point. Nothing in 

 closed part of net at 300 fathoms.) 



Geographical Distribution. Tropical Atlantic and Northern subtropical 

 Pacific, surface. 



