THE RUSSIAN FUR-SEAL ISLANDS. 
23 
MYRIAPODS. 
The tliree species brought home by me have been determined by Boliman. Lino- 
tccnia Gliionopliila and Lithohius sulc.ipes, both from Bering island, are known from 
other localities, but the species described by him as new, under the name of Lithohim 
stejne[ieri, is the only one thus far found only on the Commander Islands (Bull. II. S. 
Nat. Mus. No. 46, 1893, p. 199). 
AOAEIDS. 
The acarids collected by the Vega expedition have been described by Kramer and 
Neumau (Vega Exp. Vet. lakt., iii, 1883, pp. 519-532, pis. xli-xliv). No less than 
5 new species were described from Bering Island, 4 of which were found only on the 
latter, as follows: Nescea arctica, Bdella viUosa, Ixodes horealis, I. Jimhriatus, and 
Gamasus arcticus. Of these I obtained only J. horealis. 
SPIDERS. 
It was my intention to get as nearly complete a collection of spiders as possible, 
and I succeeded in obtaining quite a number of species, which were turned over to 
the United States National Museum. They were lent to the late Dr. Marx to be 
determined, but the report was not finished before his death. 
CRUSTACEANS. 
The crustaceans collected have not been worked up as yet, except the entomos- 
traca, which have been described by Prof. W. Lilljeborg, of Uiisala, Sweden (On the 
Entomostraca collected by Mr. Leonhard Stejueger, on Bering Island, 1882-83. Proc. 
U. S. Nat. Mus., X, 1887, pp. 154-156). Five species were collected, of which I found 
Branchipus paludosus, Daphnia loniiispina.j and the new species IHaptomm ambiguus, 
in small fresh-water ponds at Ladiginsk, Bei’ing Island. The other new species is 
Eurycercus glaxialis, which, however, has also been found in Greenland and Vaigatch 
Island, at the entrance to the Kara Sea. 
The crabs have been identified by Mr. J. E. Benedict, as follows: Oregonia gracilis 
Dana; Tehnessus cheiragonus (Tilesius); Eupagurns gilli Benedict; Eivgagurus hirsu- 
tiusculus (Dana); Eupagurns middendorjii Brandt; Eupagurns undosus Benedict; and 
Hapalogaster grehnitsldi Schalfeef, recently described from Bering Island (Bull. Acad. 
Sc. St. Petersb., xxxv. No. 2, 1892, j). 335, fig. 3). Schalfeef identifies another species 
of Hapalogaster^ also collected by Mr. Grebnitski on Bering Island, as H. mandtii. 
MOLLUSKS. 
Among the invertebrates, the mollusks have been most extensively collected 
and most thoroughly reported upon. The Vega, expedition obtained 26 species, Mr. 
Grebnitski sent the National Museum 23 species, and I myself 45 species, out of a total 
of 75 si>ecies thus far collected. Of these, 10 are land or fresh water s]>ecies. Dr. 
W. II. Dali has published two reports uiion the Commander Islands collections (Proc. 
U. S. Nat. Mus., VII, 1884, pj). 340-349 ; and ix, 1886, pp. 209-219). In the last paper he 
gives a full list of the species, including those of the Vega expedition which have 
been reported upon by Westerlund and Aurivillius. The species of land and fresh- 
water mollusks thus far collected on the islands are: Limax {Agriolimax) hyperhoreus; 
Yitrina exilis; Hyalina radiatula; Conulus fulvus, var. ; Batula ruderataj var. pauper; 
