196 EXPEDITION OF THE " ALIJATROSS," 1899-1900. 



They were in a very bad state of preservation, in consequence of which 

 tiie arrangement of the muscle bands, so characteristic of this species, could 

 not be made out ; however, the simple hypophysis mouth, and the longitu- 

 dinal glands, make the identification reasonably certain- 



Cyclosalpa afflnis Chamisso. 



Stn. 31 A.A., Sept. 19, 1899, Lat. S. 12^ 20', Long. W. 144^ 15', surface 

 temp. 80° ; taken in deepest part of cliannel separating the Marquesas from 

 the Paumotu, 7 P. M. Two specimens of the solitary generation. 



Stn. 2928, Jan. 23, 1889, off Southern California, Lat. N. 32° 47', 

 Long. W. lis 10', surface temp. 59°. Six specimens of the aggregate 

 veneration. 



Salpa confoederata scutigera Forsk. Cuv. 



Tliis species seems to be common oif the coast of California and very 

 variable. It is rare in the south seas. It was collected at four stations on 

 these voyages. 



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

 Long. W. 118' 10', surface temp. 59°. One specimen of the aggregate 

 generation. 



The test over the posterior part is much thickened and ridged, the ridges 

 covered with papillae. 



Stn. 2937, Feb. 4, 1889, off the coast of Southern California, Lat. N. 

 33° 04' 30", Long. W. 117° 42', surface temp. 62'. A number of the aggre- 

 gate generation of various sizes was collected. 



All have the test much thickened over the viscera. The larger specimens 

 have short processes scattered over this thickened portion, and a few over 

 the soft anterior part. 



Stn. 2946, Feb. 6, 1889, off Southern California, Lat. N. 33° 58', Long. W. 

 119° 30' 45", surface temp. 56.5°. A number of large chains. 



The specimens are in such poor condition that no internal characteristics 

 can be made out, but they seem to belong to this species. 



