The Chonaphini 157 



Description — ^A genus of moderately large chonaphine Xystodesminae 

 with the following characteristics. 



Body composed of head and 20 segments in both sexes, essentially 

 parallel sided, tapering at both ends. 



Head of normal appearance, smooth, polished. Epicranial suture 

 faint or distinct, terminating above epicranial region. Antennae relatively 

 short and broad, becoming progressively more hirsute distad, with 4 

 conical sensory cones on ultimate anticle, no other sensory structures 

 apparent. Genae not margined laterally, with faint or distinct central 

 impressions, ends broadly rounded and extending slightly beyond adjacent 

 cranial margins. Facial setae with epicranial, genal, clypeal, and labral 

 series, with or without frontal and subantennal series, without inter- 

 antennal series. 



Terga smooth, polished. Collum broad. Paranota well developed, 

 broadest on anteriormost segments, moderately declined, angling ventro- 

 laterad and continuing slope of dorsum, anterior corners rounded, 

 caudolateral corners variable, either blunt, squared, rounded, or angling 

 caudad. Peritremata distinct; ozopores located caudal to midlength. 

 Caudal segments normal for family. 



Sides of metazonites smooth or granular, with or without variable 

 ridges above leg coxae. Strictures broad but distinct. Gonapophyses 

 moderately long and stout, extending moderately from 2nd coxae. 

 Pregonopodal sterna glabrous; 5th sternum with or without low elevations 

 between anterior (4th) legs, with moderate depression between 5th 

 legs; 6th sternum strongly depressed between both legs to accommodate 

 stems of telopodites. Postgonopodal sterna glabrous, unmodified. Coxa 

 and prefemora with or without short projections on certain legs; tarsal 

 claws gently curved. Hypoproct broadly rounded, paraprocts with mar- 

 gins strongly thickened. 



Gonopodal aperture ovoid, extending caudad between 9th legs, 

 with or without slight anteriolateral indentations, anterior margin and 

 sides flush with metazonal surface, caudal margin elevated. Gonopods 

 in situ with telopodites extending generally forward in subparallel 

 arrangement, overhanging 6th and caudal half of 5th sterna. Coxae 

 moderate-size, with macrosetal tufts above and below cannula, narrow- 

 ly segregated by narrow sternal band, with either two lateral or one 

 central lobes. Telopodal elements parallel or subparallel for most of 

 lengths, arising basally from prefemur; latter relatively long and slender; 

 prefemoral process narrow and blade-like basally, curving anteriad at 

 midlength to 2/3 length, with or without broad, toothed projection 

 from anterior surface proximal to curve, either expanding distad into 

 deeply divided, bifurcate termination, or blade-like, extending sublinear- 



