TUNIC ATA. 21 



slightly echinated on the angles of the test ; and one large specimen of the solitary 

 form, over 7 cm. in length, with slightly echinated ridges on the test. At the same 

 locality, and on the same date, were found seven large specimens of the gregarious 

 form (in three tubes), measuring up to 7 cm. in length, with well-marked ridges on the 

 test and slightly echinated in places ; but the shape of the body is that of the typical 

 S. fusifonnis, and is not in the short rounded condition figured by Dr. Apstein for 

 the form 8. fusiformis, forma echinata, greg. (Deutsche Siidpolar Exped. 1901-03). 



On this date also were found 52 specimens of the gregarious form, measuring 

 from 1 to 2 cm. in length, and two specimens measuring 4'5 cm., also one specimen of 

 the solitary form measuring G cm. 



This species was obtained by the ' Challenger,' near the Antarctic ice, at 

 Slat. 152, Lat. 60 52' S., Long. 80 20' K, so the present is not a new record for 

 Antarctic seas. It has also been found, in the gregarious form, at the localities : 

 "Dec. 26 off Island, air 32 F., water 32 F." 32 small specimens up to 18 mm. 

 in length; "Dec. 2G oft' Island, air 32 F., sea 32 F." 12 specimens up to 

 15 mm. in length; " 17. xi. 01 "about a dozen specimens up to 3'5 cm. and some 

 small fragments of chains. 



From the locality, " 1C. xi. 01, Lat. Gl 4G' S., Long. 141 12' E.," there are 

 204 specimens of the aggregated form up to 4 cm., and of the solitary form up 

 to G cm. 



The solitary form was also found at " 51 56' S., 170 0' E. " one specimen torn, 

 and in bad condition, probably measuring 8 cm. ; " Dec. 29, Lat. 69 25' S., Long. 

 175 E., sea 32'5 F., air 30 F." one specimen measuring 4'5 cm.; and "Winter 

 Quarters, 29. v. 03, No. 4 hole, 5 fathoms " one specimen, damaged -at posterior end, 



measuring 1 cm. 



SALPA RUNCINATA-FUSIFORMIS, var. ECHINATA, Hrdm. 



This was found in the gregarious form on " 2. i. 02 " six small specimens up to 

 2 cm.; and in the solitary form at "Dec. 25, Lat. 67 5' S., Long. 179 30' E., 

 air 31 1 F., sea 3l| F." four large specimens in bad condition, 5 to 6 cm. in length ; 

 "3. i. 02"- three specimens, the largest measuring 5'5 cm.; and "8. i. 02"- 

 one specimen, measuring 6 cm. In this specimen the muscle bands are narrower, more 

 regular, and less swollen dorsally than in the solitary form of the species. 



SALPA CORDIFORMIS ZONARIA, Quoy and Gaim. -Pallas. 



This was found in the gregarious form at " 26. xii. 01, Lat. 51 56' S., 

 Long. 170 3' E." six specimens (in two tubes) measuring up to about 3'5 cm. ; and 

 in the solitary form at "23. iii. 04, Laurie Harbour, Auckland Island. Tow-net" 

 one specimen measuring 7 '5 cm. in length, with muscle bands up to 1 cm. in width ; 

 and " Laurie Harbour, Auckland Island. Surface " one specimen measuring G cm. 



G 2 



