4 6 



W. A. SANDS 



Measurements (22 specimens from 



5 localities), in millimetres 







Range 



Mean 



Head width across eyes 



1-18-1-33 



1-26 



Greatest diameter of eye 



0-36-0-42 



039 



Ocellus 



009-0-12 X 0-13-0-18 



on X 0-14 



Ocellus to eye 



009-013 



010 



Width of pronotum 



0-95-1-18 



1 04 



Length of pronotum 



0-60-0-70 



o-66 



Length of hind tibia 



1-38-1-65 



151 



Length of fore wing 



10-90-11 -8o 



1140 



Soldier. Head capsule orange-yellow to ferruginous orange, nose ferruginous orange to 

 chestnut brown. Pronotum and antennae, orange-yellow. Abdominal tergites and legs yellow, 

 abdominal sternites pale yellow. 



Head capsule in plan view a short oval, tapering slightly towards front, nose conical. In 

 profile straight or very weakly sinuate to well behind base of nose, then slightly but rather 

 abruptly raised and rounded to back of head ; specimens with completely straight profile are 

 rare. Nose equal in length or slightly longer than rest of head capsule, measuring from hind 

 margin of antennal socket, angle of nose cone 13-20 degrees ; postmentum weakly and evenly 

 convex ; antennae 12 or 13 segmented, only one in ten with 12, proportions of segments some- 

 what variable, in 13 segmented forms, III longer than or equal to II and V, IV shorter than these. 

 Setae on head confined to a bilaterally placed pair on vertex, four at tip of nose with smaller 

 setae behind them, and a few on anterior margin of postmentum. 



Abdominal tergites with very short sparsely scattered setae, and longer setae on posterior 

 margins of last three or four segments ; sternites with more numerous short setae, and longer 

 setae on posterior margins. 



Measurements (59 specimens from 14 localities) in millimetres. 



Range Mean 



Head length to tip of nose . 1-25-1-63 .... 1-43 



0-68-0-95 .... o-8o 



0-49-0-63 .... 0-56 



0-38-0-48 .... 0-43 



0-15-0-20 .... 0-17 



095-1 18 . . . . 1 04 



Variation. The imago is less variable in respect of size and colour than N. arborum (Smeath.). 

 Soldier variation consists mainly of slight differences in the thickness and length of the nose and 

 the straightness of the profile. Specimens occasionally occur with one or two setae at the base 

 of the nose in addition to those on the vertex. 



The distinctions between this and the closely similar N. arborum have been 

 discussed under that species. Darker, thicker-nosed specimens of the soldier have 

 been confused with N. ferranti, but this has two or four setae in line across the top 

 of the base of the nose, and only four setae at the nose tip. The smallest specimens 

 of N. schoutedeni , with flatter profiles, are very closely similar, but generally have the 

 nose distinctly shorter than the rest of the head capsule, and more abruptly tapered 

 at the tip. The imago of that species is also closely similar, but larger, and has the 

 wing membrane less hairy but with more distinct asters (this character cannot 

 readily be used in a key or illustrated, but is useful if material is available for com- 

 parison). The soldier of N. infuscatus is similar, but usually has a shorter nose ; 

 the imago is quite distinct with a longer more inflated postclypeus. 



Sjostedt (1926) placed the name Eutermes lujae Wasmann in synonymy with 

 E. maculiventris Sjostedt. The syntypes from the type colony of both have been 



Head width 

 Depth of head capsule 

 Width of pronotum 

 Length of pronotum 

 Length of hind tibia 



