43 
Hartmeyer (1912) says: „doch beruhrt der riicklåufende Ast des 
Mitteldarms den Rand des Magens nicht.“ Also in that respect A. 
affinis is different. The number of tentacles, stomach folds, and 
internal longitudinal vessels is the same in both species, and also 
the gonads are much alike. A. capensis has fewer tf polycarps and 
they have apparently not quite the same pear-shape as in A. affinis. 
It will be evident from the above that the present species is 
closely related to A. capensis. It is — as already stated — even 
possible that they will ultimately be found to be identical. For the 
present, however, it seems to me necessary to maintain the form 
from the Campbell Isl. as a separate species, the differences pointed 
out being — if constant — evidently too important for simply 
uniting it with the African form. 
Further material, however, alone can give us information re- 
garding the constancy or variability of these characters. 
In zoogeographical respect it is interesting to find this genus 
at the subantarctic islands of New-Zealand, the nearest occurrence 
of the genus being the Magelhaen-strait and Cape. In the Pacific 
the Polyzoinae are thus represented by Polyzoa, Chorizocarpa, Met- 
androcarpa and Alloeocarpa. 
It is of some importance that I am able to ascertain that bud¬ 
ding takes place in this species, as the existence of that form of 
reproduction in the genus Alloeocarpa has been doubted by Selys 
Longchamps („Belgica", p. 47 — 48). This author says of the form, 
which he describes as A. incrustans Herdm.: „Individus solitaires, 
sans indication de la formation future d’une colonie.“ He supposes 
further: „qu’il n’y a pas de bourgeonnement chez ces Ascidies, 
mais simplement agglomération des jeunes exemplaires autour de 
l’individu, qui les a produits par voie sexuée. —“ 
I think it would certainly be rather strange, if no budding took 
place in this genus as this mode of reproduction is found in other 
groups of Polyzoinae, e. g. Metandrocarpa. Huntsman (1906— 
1910, p. 141, PI. XI, fig. 9) figures M. taylori and the budding is 
distinctly seen, just as in A. affinis. I shall also point out that 
Metandrocarpa taylori and A. affinis are very much alike extern- 
ally. The mantle-vessels are developed in the same way in these 
two species of different genera. 
