70 COOK 



The Parajulidoe are a distinctively American group, though not with- 

 out representatives in eastern Asia. 1 The true Julidae, though having 

 their headquarters in Europe, are cosmopolitan in the north-temperate 

 zone ; that no relative of Parajulus has reached Europe seems to in- 

 dicate that these are a more recent group than the true Julidas, or that 

 their opportunities of distribution have been more limited. The fact 

 that Parajulus was originally described from Mexico is perhaps a 

 reason why it has been considered less boreal, as it were, than the 

 Julidas, though the greatest development of the Parajulidae occurs in 

 the United States. The finding of a member of this family in Alaska 

 not only greatly extends the known distribution of the group, but also 

 ranges it as a boreal if not a circumpolar type, since it is already 

 known from the Hudson Bay region of British America. 



Genus Parajulus Humbert & Saussure. 

 Parajulus Humbert & Saussure, Rev. et Mag. Zool., p. 155, 1869. 



PARAJULUS ALASKANUS sp. nov. 



(pi. v, figs. ^a-\k.) 



Type. — No. 792, U. S. Nat. Mus. Collected at Metlakatla, Alaska, 

 June, 1899, by the Harriman Expedition. 



Length about 30 mm. ; width 1.5 mm. ; segments 43 to 48. 



Color very dark brown or black, nearly uniform throughout, though 

 sometimes mottled with grayish or pinkish in young or recently moulted 

 specimens. 



The gonapods show that this is allied, though not very closely, to 

 Parajulus furcifer (Julus furcifer Harger), but in this the colum- 

 nar lateral parts are apparently longer and more slender, while the 

 prongs of the inner ramus of Harger's figure are lacking. The color 

 of the animal as a whole is also very much darker than indicated in 

 Harger's description. 



In addition to the type, this species was obtained by the Harriman 

 Expedition at Juneau, Sitka, and Yakutat Bay. 



PARAJULUS FURCIFER (Harger). 

 (pi. v, figs, sa-se.) 

 lulus furcifer Harger, Jour. Sci. and Arts, iv, p. 119, 1872. 



Harger's original specimens were collected in the John Day Valley, 

 1 A Parajulus has been described by Mr. Pocock from southeastern Corea. 

 (Parajulus coreanus Pocock, Ann. and Mag. Nat. Hist., ser. 6, xv, p. 365, pi. 

 xi, f. 12, 12a, 1895.) 



