REPORT ON THE TUNICATA. 79 



Salpa democratica-mucronata, Forskahl (PI. VIII. figs. 1-10). 



Salpa democratica, Forsk., Dcscript. anim., &c., p. 113, 1775. 



Salpa mucronata, Forsk., Descript. anim., &c., p. 114, 1775. 



Salpa democraticarmucronata, Krohn, Ann. d. Sci. Nat. (Zool.), ser. .3, toni. vi. p. 112, 1816. 



Salpa democratica-mucronata, Traustedt, loc. clt., p. 365, which see for further synonymy. 



This well-known species is the commonest in tlie Challenger collection. It was 

 obtained at the following localities : — 



(l.) Decemberl4, 1873; in Simon's Bay, Cape of Good Hope; surf. temp. 58°'5; about 

 twenty specimens, large and small, of both solitary and aggregated forms (bad condition). 



(2.) December 18,1873; Station 142,ofrtlie Cape of Good Hope ; lat. 35°4' 0"S., long. 

 18° 37' 0" E. ; surf temp. 65°'5 ; thirty specimens of the solitary form (in bad condition). 



(3.) December 19, 1873 ; Station 143, south of the Cape of Good Hope ; lat. 36° 48' 

 0" S., long. 19° 24' 0" E. ; surf temp. 73°; surface to 100 fathoms ; one specimen of 

 the solitary form (small), and three specimens of the aggregated form. 



(4.) April 2, 1874; Station 162, off East Moncceur Island, Bass Strait; lat. 39° 10' 

 30" S., long. 146° 37' 0" E. ; surf temp. 63°-2 ; one hundred and forty specimens of 

 the solitary form (about 1 cm. in length), and five hundred or more specimens of the 

 aggregated form, averaging 6 mm. in length ; also two specimens of the solitary form 

 (1'2 cm. in length) mounted on microscope slides and labelled " Off Australia." 



(5.) June 3, 1874; Station 163b, off" Port Jackson; surface; lat. 33° 51' 15" S., 

 long. 151° 22' 15" E. ; surf temp. 69°; one specimen of the solitary form in .spirit, and 

 one mounted on a microscope slide. 



(6.) June 15, 1874; off Port Jackson; surface; lat. 34° 6' O" S., long. 155° 12' 0" 

 E. ; surf. temp. 62° 7 ; two specimens of the solitary form (small). 



(7.) June 17, 1874; Station 165, between Sydney and Wellington, New Zealand; 

 lat. 34° 50' 0" S., long. 155° 28' 0" E. ; surf temp. 64°-5 ; two specimens of the solitary 

 form, and three specimens of the aggregated form (small). 



(8.) October 22, 1874; Station 199, off Mindanao, Philippine Islands; lat. b" 44' 

 0" N., long. 123° 34' 0" E. ; surf temp. 83° ; two specimens of the solitary form (small). 



(9.) March 16, 1875; Station 222, north of the Admiralty Islands, West Pacific; 

 surface; lat. 2° 15' 0" K, long. 146° 16'0"E.; .surf temp. 82°-8 ; one specimen possibly 

 belonging to this species (in bad condition). 



(10.) November 5, 1875 ; Station 295, South Pacific; lat. 38° 7' 0" S., long. 94° 4' 

 0" W.; surf temp. 58°'5 ; one specimen of the solitary form (1-3 cm. in length), and 

 one specimen of the aggregated form (5 mm. in length). 



(11.) November 6, 1875 ; South Pacific; surface, at night; lat. 37° 50' 0" S., long. 

 93° 54' 0" W. ; surf. temp. 59°-7 ; two specimens of the solitary form (large). 



(12.) November 18, 1875 ; South Pacific ; surface ; lat. 34° 9' 0" S., long. 72° 32' 0" 

 W. ; surf temp. 57°-8 ; one specimen of the solitary form, and eight specimens of the 

 aggregated form (various sizes). 



DO O \ / 



