GEOGRAPHICAL DISTRIBUTION. 



STATION LIST OF THE GYMNOSOMATOUS PTEROPODA OF THE 

 CHALLENGES EXPEDITION. 



Station 158. March 7, 1874; south of Australia; lat. 50° 1' S., long. 123° 4' E.; 



surface temperature, 45° F. 



Spongiobranchsea australis. Also at Station 314a; and on 

 March 11, 1876 



Station 170. July]4,1874; off the Kermadec Islands ; lat. 29° 55' S., long. 178° 14' W.; 



surface temperature, 65° F. 



Halopsyche gaudichaudi. Also at Station 201. 



Station 201. October 26, 1874; Philippine Islands; lat. 7° 3' N, long. 121° 48' E.; 



surface temperature, 83" F. 



Halopsyche gaudichaudi. Also at Station 170. 



Station 222. March 16, 1875 ; north of New Guinea; lat. 2° 15' N, long. 146° 16' E.; 



surface temperature, 8 2° "8 F. 



Pneumonoderma peroni. 



Station 240. June 21, 1875; North Pacific, east of Japan; lat. 35° 20' N., long. 



153° 39' E.; surface temperature, 64°'8 F. 



Pneumonoderma pacijicum. Also at Station 254. 



Station 242. June 24, 1875; North Pacific, east of Japan ; lat. 35° 29' N., long. 



161° 52' E.; surface temperature, 68°-5 F. 



Notobvanchsea inopinata. 



Between Stations 247 and 248. July 4, 1875; North Pacific; lat. 36° 42' N., long. 



179° 50' W.; surface temperature, 73°"2 F. 

 Dexiobranchsea minuta. 



