96 General Notes. 
Tetractinellid sponges of Norway, with numerous figur 
of structure. In the Morphologisches Yahrbuch bd. 
The Annals and Mag. Nat. Hist. contains a prelimina 
notice by Professor McIntosh of a remarkable new type of 
rant Polyzoa allied to Rhabdopleura. It was dredged i 
“house” ——The Annals also has the conclusion of Barros 
general theory of the embryology of the Bryozoa. His conclu 
are too long to reproduce here. The Archives de Zoolo 
Experimentale, No. 2, concludes Apostolide’s elaborate anato 
and development of the Ophiurans, and publishes, with elabor 
plates, Laffuie’s work on the organization and development 
A fresh-water sit 
has been collected in ponds and ditches in Japan, by Dr. C. 
Whitman; it has been determined by E. J. Miers to be proba 
Atyephyra compressa De Hann sp. It is allied to Trogloc 
shrimp which inhabits caves in Carinthia. The Transactt 
tions of new species of bird mites, by J. B. Tyrrell, as 
of birds found near Ottawa. In his seventh noti 
sale destruction of invertebrate life took place. This was t 
sult, probably, of avery severe storm, which occurred in this 
“which by agitating the bottom-water, forced outward th 
cold water that, even in summer, occupies the great 4 
shallower sea, in less than sixty fathoms along the coast, 
caused a sudden lowering of the temperature along th 
zone, where the tile-fish and the crustacea referred to were 19 
found. As the warm belt is here narrow even in summer, 
not only bordered on its inner edge, but is also underlaid by 
colder water, it is evident that even a moderate agitation 
mixing up of the warm and cold water might, in winter, T 
the temperature so much as to practically obliterate the 
belt, at the bottom. But a severe storm, such as the one 
to, might even cause such a variation in the position and 
