38 PROCEEDINGS OF THE ACADEMY OF [Jan., 



First anterior spiracle large, vertically oval, a few following of the 

 same shape, others round, gradually decreasing in size from the first to 

 the last. 



Anterior ventral plates with a median sidcus, some of the middle ones 

 with a median oval area marked off laterally by semi-lunar depressions. 

 Ventral pores numerous, in more anterior plates arranged in a median 

 depressed area, in first middle plates in a longitudinal median band and 

 in a narrower band cephalad of posterior margin, further back covering 

 nearly the entire surface, although in some more or less absent from a 

 median area while densely covering the plate elsewhere. 



First pair of legs shorter and much more slender than those succeed- 

 ing, legs increasing in length from the first to the last. Anal legs with 

 a long claw. 



Pleurae of last segment with 10-16 pores arranged mostly along the 

 margin of the ventral plate or partly covered by the latter, a number 

 (4-5) also adjacent or somewhat overlapped by the dorsal plate. Last 

 ventral plate a little wider than long, about as wide as the one pre- 

 ceding. 



Pairs of legs 49-51. Length, 25 mm. ; greatest width, 1.2 mm ; length 

 of antennae, 2 mm.; of anal legs, .9 mm. 



Remarks. — The types are two adult females. They are not very 

 closely related to any other known species. 



Parajulus ueomexicanus sp. nov. 



Diagnosis. — First dorsal plate smooth, its sides not at all striate; 

 other segments strongly striate below. Repugnatorial pores small, 

 free from the transverse suture. Last dorsal plate blunt behind, not 

 extending beyond anal valves. Pre-anal scale convexly rounded in 

 front and behind, the curved margins meeting at an acute angle 

 laterally. Anal valves marginate, rugose. Male: Mandibular stipes 

 strongly produced below; the greatly enlarged first pair of legs not 

 at all bent or hamate at end, not tuberculate; copulatory feet ex- 

 posed, the anterior plate set obliquely, very wide, clavately enlarged 

 upward, and produced backward above base posteriorly, the inner 

 border bent inward or backward, indented below top, concealing 

 middle and posterior piece from the front and side. 



Description. — Slender, smooth and shining, glabrous. General color 

 light-l^rown, transversely banded with dark-brown or blackish, a 

 median dorsal line of same ; a series of suboval light-colored spots along 

 lower part of each side ; toward dorsum within dark band of each seg- 

 ment a short row of light-colored, often confluent, blotches each crossed 



