128 



W. A. SANDS 



Posterior margin of head capsule much less than semi-circular behind eyes, slightly sinuate 

 immediately behind eyes ; fontanelle pale, sharply contrasting with surrounding cuticle, 

 Y-shaped, to short triangular owing to occlusion of posterior part by pigmented cuticle, lateral 

 arms short, sometimes dilated terminally ; eyes oval, moderately prominent in proportion to 

 own diameter, medium sized to large relative to head width, W/E index 2-4-2-9, ocelli medium 

 sized to large, oval, separated from eyes by one-fourteenth to three-tenths own least diameter ; 

 postclypeus moderately inflated, width 2-3-2-4 times length, anterior margin near straight to 

 slightly concave, posterior margin convex, rounded, sometimes slightly indistinct or with slight 

 bulge in middle ; molar plate of right mandible with 7-8 ridges ; antennae 17 segmented, 

 II and III subequal, longer than VI, IV and V subequal and shorter than IV. 



Pale coloured " scent " gland on anterior margin of fifth abdominal sternite of $ medium- 

 sized, 0-70-1-02111111. wide, o-2o-o-3omm. long ; cerci of $ equal to or longer than width across 

 base, conical with somewhat irregular outline. 



Pilosity on vertex consists of short curved setae of even length forming a " pelt " or " mat ", 

 and scattered longer setae among them. (Text-fig. 383). 



Measurements (22 specimens from 7 localities) in millimetres. 





Range 



Mean 



Head width across eyes 



1-78-2-17 



1-85 



Greatest diameter of eye 0-65-0-85 



074 



Ocellus 



0-20-0-29 x 0-26-0-35 



0-24 x 030 



Ocellus to eye 



0-02-0-06 



004 



Width of pronotum 



1-63-2-07 



i-86 



Length of pronotum 



103-1-15 



in 



Length of hind tibia 



2-33-2-86 



2-49 



Length of fore wing 



16-40-21-50 



19-96 



Soldiers. Major soldier : head capsule, chestnut brown to nearly pitch black, nose dark 

 chestnut brown to pitch black with reddish tip ; antennae yellow-brown. Pronotum, anterior 

 lobe yellow-brown, posterior lobe, meso- and metanota, legs and abdominal sternites yellow ; 

 abdominal tergites yellow to brown. 



Head capsule in plan view short oval to slightly wider than length, nose near cylindrical to 

 weakly conical. In profile distinctly concave, with back of head rising from above or slightly 

 behind antennal socket, and evenly rounded ; nose slightly shorter to distinctly longer than 

 rest of head capsule, measuring from antennal socket, angle of nose cone 5-10 degrees ; antennae 

 13-14 segmented, 6 out of 7 with 14, II, IV, V, and VI subequal and slightly shorter than III, in 

 13 segmented forms III longer and usually partly subdivided. Head setae confined to 4 at nose 

 tip and very few small pale setae behind these ; dorsal surface of head capsule without 

 prominent setae, sometimes minute traces of bilaterally placed pair on vertex present. 



Middle abdominal tergites with scattered minute setae, visible in profile, longer on posterior 

 two tergites ; sternites with short backward and longer downward and forward directed setae, 

 the latter on posterior margins and 2 or more times length of shorter. 



Minor soldier : colour as major soldier, antennae 12-14 segmented, proportions of basal 

 segments variable. 



Measurements (Major soldiers, 64 specimens from 19 localities, minor soldiers, 6 specimens 

 from 4 localities) in millimetres. 



'ajor Soldiers : 



Range 



Mean 



Head length to tip of nose . 2-11-2-70 



2-47 



Head width . 



1-18-1-73 



1-48 



Depth of head capsule 



0-86-1-20 



0-88 



Width of pronotum 



0-53-0-74 



0-68 



Length of pronotum 



0-28-0-38 



0-32 



Length of hind tibia 



1-48-2-01 



178 



