26ii THE CANADIAN ENTOMOLOGIST. 



this number may be frequent or the rule. Similarly the typical number 

 for the female is 41, but variation is more frequent than in the male, the 

 number sometimes being 43, or, in sections where the variation in the 

 number in the male in the minus direction is frequent, falling to 37, and 

 even to ;^^. Neither males nor females with 35 pairs of legs have been 

 reported. 



In the United States the form commonly referred to Z. chionophila 

 differs from the northern specimens and agrees with the European Z. 

 atteimatus in having the number of pairs of legs in the male practically 

 fixed at 39. In the female the number varies from 41 to 37. Of 22 

 females from Ithaca, N. Y., the author finds six to have 41 pairs, eight to 

 have 39 and eight to have 37 pairs. 



It may be added that the number of coxal pores in specimens of the 

 European attenuatus and in the form of chionophila found in the United 

 States averages considerably higher than in the Alaskan specimens here 

 listed. Of the 22 females from St. Paul Island, eight have six pores, five 

 have five, five have seven, three have eight and one has nine ; of the 

 males, sixteen have six pores, ten have five, two have seven and one has 

 eight. The mode is thus six pores on each side. 



6. Hypozonium amiriwi Cook. 



1904. — Hypozotiium afuirm?i, Harriman Alaskan Expedition, I, p. 63. 

 One specimen from Bremerton, Washington, The type was taken at 

 Seattle in the same State. 



7. Paraiuhis fiircifer (Harger). 



1872. — lulus furcifer^ Amer. Jour. Sci. and Arts, IV, p. iiq. 

 A number of specimens from Bremerton, Washington. 

 This is a very common species throughout the Pacific Coast region,, 

 from Southern California to Canada. 



8. Paj-aiulus alaskanus Cook. 



1904. — Paraiulus alaska?ius, Harriman Alaskan Exped., IV, p. 70^ 



Five specimens from Snettisham, Alaska. 



Previously knov/n from Juneau, Sitka, and Yakutat Bay. 



9. Scytonotus Bergrothi, sp. nov. 



Dorsum dark brown, the prozonites often paler, light brown ; a nar- 

 row dark median longitudinal line, which is usually obscure over the 

 anterior region, but more distinct over the median and posterior segments; 

 carinse light brown. Venter light brown. Legs light brown proximally, 

 darker and often of reddish tinge distad. Frontal and clypeal region of the 



