Chilopoda 15 h 
The Chilopoda collected by the Canadian Arctic 
Expedition, 1913-18. 
By Ralph V. Chamberlin. 
The Myriapod material secured by the Canadian Arctic Expedition antl sent 
to me for report was collected in the Cape Nome region at Nome and Teller. 
Only two species are represented, both being chilopods, one of the order Litho- 
biomorpha and one of the Geophilomorpha. It is noted that other specimens 
were taken at Ketchikan in southern Alaska, and preserved dry; but these 
specimens were not included in the material transmitted for study. 
All types described in this paper are in the Canadian National Collection 
of Insects, Ottawa. 
Aside from members of the two orders above mentioned, the Scolopendro- 
morpha are also represented, at least in the southern part of Alaska, as I have 
many specimens of Otocryptops rubiginosus Koch from Forrester island, a species 
occurring also in China and Japan as well as in other northern parts of North 
America, such as Canada, Minnesota, etc. The common Otocryptops sexspinosus 
Say also occurs. The chilopods now known to bo found in Alaska are as follows : 
Otocryptops rubiginosus Koch. 
Otocryptops sexspinosus Say. 
Linotaenia chionophila Wood. 
Arctogeophilus glacialis Attems. 
Cryophilus alaskanus, gen. et sp. no v. 
Gnathonierium melanonotum Wood. 
Geophilus alaskanus Cook. 
Pachymerium ferrugineum Koch. 
Escaryus albus Cook. 
Monotarsobius tricalcaratus Attems. 
Ezembius stejnegeri Bollman. 
Oabius uleorus Chamberlin. 
Paobius boreus Chamberlin. 
Ethopolys integer alaskanus, subsp. no v. 
Geophilomorpha. 
One family, the Chilenophilida?, is represented in the collection. Three 
other families of the order are also known to occur in Alaska. The Linotaeniidie 
are represented by Linotaenia chionophila Wood, a species widespread in the 
northern United States and Canada and exceedingly close to, if not identical 
with, the well-known European L. acuminata Leach. This species appears to 
be common on Pribilof, Aleutian, Kadiak, Baranof, Popof and Forrester islands. 
etc., as well as at points on the mainland. The Schendylidie have also a single 
known member here, namely, Escaryus albus Cook, which occurs on Pribilof 
island (St. Paul), The Geophilidse proper are represented by two species, 
Geophilus alaskanus and Pachymerium ferrugineum (Koch),, the first being known 
from Sitka and Forrester island, and the second from Yakutat bay and St. Paul 
island. 
CHILENOPHILIDA. 
The existence of a group of geophiloid genera differing from typical geophilids 
in having a strongly developed pleurosternal suture on each side of the second 
maxillary segment was pointed out by Attems in 1909^ this author designating 
1" Zool. u. anthrop. Ergeb. c-iner Forschungsreise im West. u. Zent. Siidafrika, Myriopoden", 
in Denks. med.-naturw. Ges. Jena, 1909, 14, p. 22. 
