98 PROFESSOR W. A. HERDMAN ON THE 



II. Station 325, Scotia Bay, April 1903. One specimen, 30x4x3 cm., bad 

 condition. 



III. Station 325, Scotia Bay, South Orkneys, December 6, 1903; temp. 29'8 ; 



floating on surface. 80 cm. x 2 (tapering to 1) cm. 



IV. Station 325, Scotia Bay, South Orkneys, December 26, 1903 ; temp. 307. 



(1) 85 (incomplete) x T5 (tapering to 1) cm. 



(2) 75 cm. (incomplete) and two fragments. 



V. Station 326A, Brown's Bay, South Orkneys, November 1903. Two specimens : 



(1) 55 x 2 to 3 cm ; (2) 40 x 2 cm. 



VI. Scotia Bay, South Orkneys, January 17, 1904; temp. 32"5 ; thrown up on 

 beach. One colony, 20 x 5 cm., with several Styela lactea attached ; in 

 bad condition ; most of Ascidiozooids lost. 



VII. Scotia Bay, South Orkneys, January 3, 1904; temp. 31'5; thrown up on 

 beach. Two very long specimens: (1) over 100x2 cm.; (2) over 

 150 x 2 cm. 

 VIII. Scotia Bay, South Orkneys, November 25, 1903; surface. Three small 



colonies, 20 to 30x 1 to 1'5 cm. 

 IX. Scotia Bay, March 25, 1903. One small colony, 10x2 cm. ; bad condition ; 



most of Ascidiozooids gone. 



Most of these specimens are, unfortunately, in very bad condition, and were probably 

 dead or decomposing when collected. The Challenger specimens were in such a rotten 

 condition that it was impossible to determine even the genus. But from the rather 

 better material brought home by the Southern Cross Expedition I was able to determine 

 that the Challenger specimens evidently the same species belonged to the genus 

 Distaplia. What CALMAN described as Julinia australis in 1894 is again the same. 



SLUITER, in his report on the Charcot Tunicata, thinks that " Julinia " may be 

 recognised as an independent genus because of the elongated form of the colony ; but 

 Distaplia clavata (Sars), from Arctic seas, although it does not attain to such a length, 

 has the same elongated form and therefore it cannot be said that a Distaplia with this 

 habit of growth is unknown. 



The colony found floating on the surface in Scotia Bay, December 26, and measuring 

 about 85 cm. in length, is the best preserved specimen in the collection, and I think 

 the best preserved that I have seen in any collection brought back from the Antarctic. 

 The colony, although soft, does not seem to be rotten. The Ascidiozooids are distinct 

 and large and closely placed throughout its length. Their exposed ends measure about 

 2 mm. across, and are of an opaque pale yellow colour, in contrast to the translucent grey 

 of the test in which they are embedded. Throughout the greater part of the colony the 

 Ascidiozooids appear to be in long meandering lines, but here and there one comes upon 

 a circular, elliptical, or more irregular group (fig. 2), reminding one of the arrangement 

 in a Botrylloides. Both ends of the colony are incomplete, and at the upper end the 

 Ascidiozooids appear to be dropping out of the test. 



(ROY. soc. EDIN. TRANS., VOL. XLVIII., 316.) 



