1912] Chilopods and Dtplopods 165 
The gnathochilarium of the male has the promentum very large, 
broadly elliptical in outline. For form and relations of stipes and other 
parts see Pl. XI, fig. 6. 
First legs of male strongly enlarged, uncinate, as usual; caudal 
surface glabrous excepting distal article, the anterior surface with long 
‘stout hairs. (See Pl. XI, fig. 5). 
Second legs as usual greatly reduced excepting for the strongly 
enlarged cox; the latter produced mesally into a long, tongue-like 
process which extends cephalo-ventrad between the first legs. (See 
Pl. XI, fig. 4). 
Gonopods large and conspicuously exposed, bent above base strongly 
ventro-cephalad. Inner branch of anterior pair much longer than the 
outer, contiguous with each other mesally, clavately enlarged distad; 
outer branches broad, plate-like, densely clothed with long setz along 
anterior-ventral and distal borders. Anterior pair apically terminating 
in two spines, the more anterior of which is a little curved distad and 
at end is expanded; the other process strongly curved ventro-ectad, 
crossing the first, and terminating acutely. (See Pl. XI, figs. 1 and 2). 
Length ad 20 mm.; width 1.6 mm. (female). Male more slender, 
length 16-18 mm.; - width 1.2 mm. 
Locality: Mill Valley, Cal. (April 8, 1911; author, coll.). 
About a dozen specimens were secured. 
Paraiulus timpius sp. nov. 
Dorsum with a broad band of light brown, paler than the sides. A 
median dorsal line of black which expands into a wider dot on anterior 
portion of each segment. Each segment bordered caudally with a 
narrow blackish stripe; a broader and more diffuse transverse dark 
band farther cephalad on segment, this band embracing a transverse 
row of four light spots of which the two inner ones are smallest, oblong 
and obliquely placed, sometimes confluent ephcalad with anterior pale 
portion of segment, the two outer light spots confluent caudad with the 
pale area between the two dark bands. On the anterior segments the 
light and dark areas of dorsum merged and the whole covered with a 
close network or areolation of dark lines over light ground and the median 
dorsal line as such less distinct. First dorsal plate entirely covered with 
similar network, the lower portion of sides dark brown or smoky; a 
narrow dark transverse stripe caudad of anterior margin. Sides of 
segments dusky or blackish, darkest along caudal margin, in a stripe 
continuous with the dark dorsal one, prozonites paler; a large light spot 
below level of pore on each segment, this spot mostly more or less con- 
stricted into two or three parts. Venter pale, a large light spot ectad 
of legs on each segment. Vertex of head with a dense network of black 
enclosing rows of very small, longitudinally oval light dots; frons 
between eyes solid black, enclosing a pair of light dots close to mesal 
line; brown between antenne the area enclosing a number of paler dots. 
Clypeal and labral region yellowish. Antenne deep purplish brown. 
Legs very pale, distal joints streaked with purplish or purplish brown. 
