ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 
63 
and loricatus. He discusses the dorsal shield and its glandular 
apparatus, the upper lip and the lip-glands, the tail and its spine, the 
appendages, the gut, the nervous system and sense-organs, the muscula- 
ture, the development of the cypris-pupa in the nauplius, and the 
question of the larvae generally. Apart from these important matters, 
Prof. Chun has something interesting to say in regard to the extra- 
ordinarily bizarre feathery bristles and spinous processes. They may 
help in nutrition and sensation, but part of their meaning is surely 
found when we regard them as adaptations to pelagic drifting. This 
leads the author to a short essay on the floating and drifting of pelagic 
Crustaceans. Several small Entomostraca like Evadne have air-bubbles, 
many have oil-globules, Hyperidae and others have gelatinous substance, 
but not least important are the elongated and feathered outgrowths. 
South American Cirripedia.* — Dr. W. Weltner gives a short account 
of a collection of Cirripedia brought by Drs. Michaelsen and Plate from 
Patagonia, Chili, and Juan Fernandez. The list of thirteen species 
includes a new variety of Balanus tintinnabulum, a divergent form of 
Lejpas australis , and Goronula diadema from an unknown whale — all new 
to the Chilian region. 
Annulata. 
Budding in Syllis ramosa. f — Mr. Asajiro Oka has been able to 
make some remarks upon the curious budding- sponge Syllis ramosa , 
which was one of the most remarkable finds of the ‘ Challenger * expe- 
dition. It -was notable, it may be remembered, for the way in which a 
remarkable worm colony was made by repeated budding. Want of ma- 
terial, however, has prevented the mode of this reproduction being 
investigated. The author was fortunate enough to get a small mass of 
this rare worm in the living state, and he promises to give in time a 
detailed account of his results. It was early seen that many of the buds 
arose in a paired manner, and on either edge of the primitive trunk. 
Closer examination showed him that he had to do with two kinds of 
buds, which varied according to their mode of development. Collecting 
a large number of buds and arranging them in two groups he was easily 
able to show that the buds of each group were arranged in a continuous 
series. In other words, Syllis ramosa has two different modes of budding. 
The first kind, which he calls intercalatory, is effected by a new segment 
appearing between two which have been already formed. This, immedi- 
ately after its appearance, produces a bud on either side of the body. 
The paired buds that thus arise are only for a short time the same size, 
and in a very early stage in development they begin to differ from one 
another in dimensions, one increasing much more rapidly than the other. 
The second mode of budding is called that of regeneration. Here the 
first embryo of the bud appears at the place where, earlier, a cirrus was 
attached to the body. Whether the loss of a cirrus acts as a stimulus to 
the gemmation, or inversely the internal budding force leads to the dis- 
appearance of cirrus, cannot be definitely said. In any case, the surface 
which did bear a cirrus becomes the primitive zone of the young bud. 
* Arch. f. Naturgesch., lxi. (1895) pp. 288-92. 
t Zool. Mag., vii. (1895) pp. 117-20 (4 figs.). 
