ZOOLOGY. 439 



sala. It contains a large number of papers by its members. 

 Those on zoology comprise a note by H. Thiel on some Hol- 

 othurians of the seas of Nova Zembla, illustrated by a plate. 

 Tycho Tullberg, a descendant of Linnaeus, contributes an il- 

 lustrated paper on the byssus-gland of the edible mussel, its 

 structure and relations. Professor Lilljeborg gives a sys- 

 tematic review of the Phyllopod Crustacea of Sweden. He 

 regards the Branchinecta grcenlandica of Verrill as identical 

 with the B. pcdudosus of Miiller, which not only occurs in 

 Greenland but also in Northern Norway, on the Dovre Fjeld 

 in Lapland, in Nova Zembla, Vaigatch Island, and in North- 

 ern Siberia. A new species of Lepidurus (L. mdcrurus) is 

 described from Archangel, in Northern Russia, which is near- 

 ly allied to Lepidurus coaesii (Packard), from Montana. This 

 is an interesting discovery, as showing the analogy of the 

 Phyllopod fauna of the central region of North America 

 i. e., the fauna of the great plains and Rocky Mountain pla- 

 teau to that of Northeastern Asia a relation noticed by 

 I'ackard in the insects of the Rocky Mountains. A good 

 deal of uncertainty pervades the subject of the growth and 

 breeding season of the Phyllopod Crustacea, all except Arte- 

 mia inhabiting fresh water. The members of the family 

 Branchipodidce (Branchipus and Artemia) are found very 

 early in the spring with ripe eggs, as soon as the snow 

 melts. It now appears that Eubranchipus verncdis (Verrill) 

 has been found near Salem, Mass., of adult age, with nearly 

 ripe eggs, in December and January; so that this species at- 

 tains its growth in the autumn. Whether it lays eggs then 

 is not known, but it is not probable that the eggs are drop- 

 ped before the early spring. The young may attain their 

 growth in one season, and probably do. While in Utah last 

 summer Dr. Packard ascertained that the Artemia of Great 

 Salt Lake probably passes the winter months in the sexually 

 mature state, as he was told that the adults occur abundant- 

 ly in early spring, hence must get their full size in the pre- 

 vious autumn. 



In a report on the insect and other animal forms of Cale- 

 donia Creek, New York, Mr. J. A. Lintner describes, for the 

 New York State Commissioners of Fisheries, the various in- 

 sects and crustaceans which abound in fresh-water streams 

 and ponds, and serve as food for fishes. He confirms the 



