W. A. SANDS 



two to four times breadth, lateral arms short or very short, sometimes dilated terminally ; 

 frons with two small diverging depressions in front of fontanelle ; eyes commonly oval, 

 moderately to distinctly prominent in proportion to own diameter, and medium-sized relative 

 to head width, W/E index 2-6-3-0 ; ocelli medium sized, near circular to short oval, separated 

 from eyes by one-tenth to one-fifth own least diameter ; postclypeus moderately inflated, 

 width 2 -2-2 -6 times length, anterior margin straight or weakly concave, posterior margin convex, 

 often more rounded towards outer corners, sometimes slightly obtusely angular in middle ; 

 molar plate of right mandible with 7 ridges ; antennae with 15 segments, only one specimen 

 recorded with III partially subdivided, usually III longer up to twice II, IV longer than II and 

 shorter than III, V, and VI subequal, about as long as II but stouter. 



Pale coloured " scent " gland on anterior margin of fifth abdominal sternite of $ small, 

 0-56-0-64111111. wide, o-n-o-i3mm. long ; cerci of 9 as long as, or longer than basal width, 

 conical or slightly mamilliform. 



Pilosity of vertex of uneven length, not forming a " pelt " or " mat ". 



Measurements (22 specimens from 4 localities) in millimetres. 



Head width across eyes 

 Greatest diameter of eye 

 Ocellus 

 Ocellus to eye 

 Width of pronotum 

 Length of pronotum 

 Length of hind tibia 

 Length of fore wing 



Range Mean 



1-48-1-75 . . 1-57 



o-53- -03 . . 057 



OI9-O25 X 0-24-0-29 . . 0-2I X 0-26 



0-03-0-04 . . OO3 



i -33-1 -68 . . 1-48 



0-80-1-08 . . 0-93 



1-98-2-38 . . 2-21 



1410-20-30 . . I707 



Soldiers. Major soldier : head capsule orange-yellow to ferruginous orange, commonly 

 orange, nose ferruginous-orange to chestnut brown with red tip, commonly ferruginous. Pro- 

 notum, meso- and metanota orange yellow, antennae and legs yellow. Abdominal tergites 

 yellow-brown to brown, sternites pale yellow. 



Head capsule in plan view slightly to distinctly " shouldered " behind antennae, rounded 

 posteriorly, length equal to or slightly more than width, posterior margin often slightly sulcate 

 in middle ; nose weakly conical, often with curved taper increasing towards base. In profile 

 variable from near straight to distinctly concave with back of head rising from behind antennal 

 socket and rounded ; nose equal in length to shorter than rest of head capsule, usually with 

 curved taper increasing from near cylindrical tip to distinctly conical base (resembling an 

 inverted trumpet), fontanelle large, o-o5-o-iomm. in diameter ; antennae 12-14 segmented, 

 87% with 13, one recorded with 14, proportions of basal segments variable, usually III longer 

 up to twice II and IV, V and VI longer than these, shorter than III. Prominent head setae, 

 confined to densely hairy nose tip, dorsal surface of head capsule only with very sparse micro- 

 scopic short setae. Middle abdominal tergites almost devoid of setae, those on posterior two 

 short and sparse. Sternites with short, sparse backwardly directed setae, one-sixth to one-third 

 length of longer setae on posterior margins approximately in longitudinal rows, 2 or 3 on each 

 side of mid-line, directed downwards or slightly forwards. Minor soldiers : colour as major 

 soldiers except nose usually chestnut brown. Antennae 12 segmented. 



Measurements (Major soldiers, 92 specimens from 24 localities, minor soldiers 26 specimens 

 from 20 localities) in millimetres. 



Major Soldiers : 



Range 



Mean 



Head length to tip of nose 



1-90-2-50 



2-21 



Head width . 



1-05-1-54 



I -26 



Depth of head capsule . 



0-78-1-07 



092 



Width of pronotum 



0-50-0-68 



0- 5 8 



Length of pronotum 



023-0-29 



0-25 



Length of hind tibia 



1-20-1-55 



i-37 



