~ 



TUNICATA. 



By W. A. HERDMAN, D.Sc., F.K.S., 



Professor of Zoology in the, University of Liverpool. 



(7 Plates.) 



THIS is a small but interesting collection consisting of about twenty-two species, 

 represented by about 2,000 specimens. By for the greater number of the latter 

 belong, however, to a few species of Salpidax If we omit the Thaliacea and Larvacea, 

 the remaining simple and compound Ascidians number only thirty-three specimens, 

 belonging to fourteen species. They are distributed in families as follows : 



ASCIDIACEA : 



Styelidse two species. 

 Halocynthiidfe two species. 

 Bolteuiidie one species. 

 Molgulidre four species. 

 Ascidiidse one species. 

 Clavellinidse one species. 

 Didemnidaj two species. 

 Polycliuidse one species. 



THALIACEA : 



Salpidse four species. 



Doliolidse one species. 

 LARVACEA : 



Appendiculariidse at least two species. 



Of these I find that I must describe ten (two species of Sti/iiu, one of IIal>c>/ntlii<i, 

 one of Soltenia, four of Molgulidae, and two compound Ascidians) as new to science, 

 although none of them are very remarkable forms in any way. The greater part of 

 the collection was obtained through closely adjacent holes in the ice near the Winter 

 Quarters of the ' Discovery ' in McMurdo Bay. Those species labelled simply " Winter 

 Quarters " must be regarded as coming from shallow water between the ship and the 

 shore in that locality. 



I have already * expressed the view that the Ascidiau fauna of the far South is 



* Report of British Association for 1892, p. 787 ; and elsewhere. 



