THE PELAGIC TUNICATA. 199 



Salpa fusiformis-runcinata form echinata. 



Two specimens of this form were taken on successive days not far from 

 the equator. 



Stn. 14 A. A., Sept. 7, 1899, Lat. N. 6' 41', Long. W. 137°, surface temp, 

 S2\ One specimen of tlie solitary generation was taken at the surface at 

 8 p. M. It is 6 cen. in length, 15 mm. in breadth near the posterior end 

 and about 10 mm. at the anterior end. The chain of blastozooids is well 

 developed. 



Stn. 15 A.A., Sept. 8, 1899, Lat. N. A 35', Long. W. 136 54', surface 

 temp. 79'. One specimen of the solitary generation. 



Salpa cylindrica Cuv. 



Stn. 2928, Jan. 23, 1889. Off the coast of Southern California. Lat. 

 N. 32° 47' 30", Long. W. 118' 10', surface temp. 59'. A number of the 



.solitary generation w^ere taken. 



Salpa tilesii-costata Cuv.-Quot et Gaim. 



' Stn. 2928, Jan. 23, 1889. Off Southern California. Lat. N. 32" 47' 30", 

 Long. W. 118' 10', surface temp. 59'. A number of specimens apparently 

 belonging to this species were collected. They are in very bad condition 

 and only the general shape serves to identify them. 



Stn. 236 A.A., Jan. 2S, 1900. About forty-six miles southwest of south 

 point of Arhno. Lat. N. 6' 34', Long. E. 170' 59', surface temp. 81°. Four 

 specimens were taken on the surface by electric light. They are in very 

 good condition. There are numerous sharp-pointed papillae scattered over 

 the test of the dorsal side. 



Salpa zonariacordiformis Pai.i.-Qcov ct Oaim. 



Specimens of this species were collected at four localities : 



Stn. 2 A.A., Aug. 27, 1899, Lat. N. 28 23', Long. \V. 126^ 57', surface 



