Ttmicata. 191 



A. idaccnta and A. meridionalis, Corynascidia suhmi, Ahijssascidia 

 vasculosa, Eiigyra herguehnensis, Ascopera gigantea and A. pedun- 

 cidata, Molgula gigantea and M. pedunctdata, Goodsiria coccinea and 

 G. pedunculata, Cideolus recumbens and G. pierlucidus, Fungulus 

 cinereus, Batkyonciis mirahilis, Styela lactca, S. sericata, S. grandis, 

 S. convexa, and Pharyngodidyoii mirahile, Golclla pedunculata and 

 G. concreta, Amaroucmm variahile, Ghorizocormus rcticulatus, Tylo- 

 hrancJiion syeciosum, Atopogaster gigantea and A. elongata, were 

 evidently a marked featnre of the fauna. Since the ' Challenger ' 

 expedition the ' Belgica ' and the ' Valdivia ' have brought home col- 

 lections from the far south. These are being worked out, but no 

 results in regard to tlie Tunicata have so far ^ been published. 



The present collection, made l^y the officers of the ' Southern Gross ' 

 along the beach and in the shallow water at Cape Adare, Victoria 

 Land, consists of two species of simple Ascidians belonging to the 

 family Cynthiidae, six species of compound Ascidians, five of which 

 are Polyclinidae, and of a number of specimens of Salpidae, all of 

 which seem to belong to the chain-form of Salpa runcinata-fusiforinis. 

 Four of the species seem new to science : a Tylohranchion, a Poly- 

 clinuin, and two species of Psammaplidium, but none of these can be 

 said to be in any way remarkable. Tlie Tylohranchion is interesting 

 as adding a new species to a genus only known from the Southern 

 Ocean. 



ASCIDIACEA. 



ASCIDIAE SIMPLICES. 



Family CYNTHIIDAE. 

 Sub-Family BOLTENINAE. 



Boltenia pachyderraatina. (PLite XIX., figs. 1 and 2.) 



(See 'Challenger^ Eep., Pt. I., p. 89 ; also Cat. Tunicata Australian Mus., 



PL Cyn. L, fig. 1.) 



About twenty specimens of this large species were obtained from 

 " Adventure Bay, Tasmania, 12th Dec, 1898, along the beach." The 

 individuals range from 8 cm. to 22 cm. in total length, and closely 



1 December, 1901. 



