THE MYRIAPODA OF NORTH AMERICA. 35 



scriptions seeni to apply more to tlie younger stages of the latter. 

 Concerning the status of Jul us montanus Cope, I have regarded it as 

 identical with P. pennsylvanietis, but it may represent a geographical 

 form, as those from farther south have more segments and attain a 



larger size. 



2. Parajulus zonatus, sp. now 



Diagnosis. — Related to Parajulus furcifer (Harger), but the aual seg- 

 ment produced into a strong spine, which passes considerably beyond 

 anal valves; segments with short, deep sulcations; color dark brown, 

 posterior border of segments pale. 



Type.-rU. S. Nat. Museum. 



Habitat. — Chehalis, Lewis County, Wash. Terr. 



Description of type. — Brown, posterior border of segment pale, usual 

 yellow lines and spots absent, legs dark. Robust, segments with uu 

 uierous short sulcations, not pilose. Vertex rough, a distinct median 

 sulcus, setigerous foveohie present. Antennas equaling width of body. 

 Ocelli 46-7 to 56-8, arranged in a triangular patch. Segments, 52 to 

 53. Last segment produced into a large, straight, robust spine, pass- 

 ing beyond anal valves; anal valves slightly marginate, sparsely pilose; 

 aual scale large, not passing beyond anal valves, pilose. Repugnato- 

 rial pore large, more deeply impressed than in furcifer, placed near 

 transverse suture, which is nearly straight. 



Pairs of legs, 93 to 95, moderately long. Length of body, 25 to 40 ,m " ; 

 width, 2 to 2.5""". 



This species differs most strikingly from P. furcifer by having the 

 last segment produced considerably beyond anal valves, and also by 

 the plain color. In P. furcifer the last segment does not pass beyond 

 the anal valves, and the yellow lines and spots, which are absent in 

 zonatus and generally present in other species, are very bright; in fact, 

 much more than in any other species. 



The male genitalia, of which I have said nothing, differ very remark- 

 ably from that of P. furcifer or P. oregonensis. 



I have examined two males of this species. They were collected by 

 Mr. George Gregg, of Chehalis, Wash. Terr. 



3. Craspedosoma atrolineatuni, sp. nov. 



Diagnosis. — Light brown, lateral carinas and a median dorsal line 

 dark. Male: Femur of fourth pair of legs produced at the middle into 

 a knob-like process armed with a few rather large tubercles; femur of 

 ninth pair with a cylindrical, tapering basal lobe, which is slightly tu- 

 berculate. 



Type. — XT. S. Nat. Museum. 



Habitat. — Glacier, British Columbia. 



Description of type. — Light brown, lateral carinas and a median dorsal 

 line black; legs pale. Robust, attenuated anteriorly and posteriorly, 

 back not flattened. Ocelli very distinct, arranged in a subtriangular 



