58 W. A. SANDS 



2 Vertex of head viewed diagonally upwards with numerous yellowish bristle-like setae 



(Text-fig. 115) . . . . . . . contractus (p. 61) 



Vertex with one or two bristles and sparsely scattered shorter hairs, a few more 



bristles immediately behind eyes (Text-figs. 114, 118) ..... 3 



3 Right mandible with cutting posterior edge of first marginal tooth exposed beyond 



anterior margin of second marginal, longer (10 : 8) than equivalent cutting edge of 

 second marginal (Text-fig. 171) (S. Africa, S. of Limpopo) . coatoni sp. n. (p. 58) 



- Right mandible with cutting edge of first marginal shorter (8 : 10) than equivalent 



edge of second marginal (Text-fig. 180) (West Africa to Sudan) . tenebricus (p. 68) 



Soldier 



1 Nose slender, cylindrical, head capsule in plan view with sides converging towards 



front and slightly sinuate, scarcely constricted behind antennae F. mallyi (p. 65) 



- Nose more or less conical, head capsule in plan slightly to distinctly constricted 



behind antennae ............ 2 



2 Antennae 12 segmented ........... 3 



- Antennae 13 segmented ........... 4 



3 Colour paler, head capsule orange to ferruginous, nose as head or darker, to pitch black 



F. coatoni sp. n. (p. 58) 



- Colour darker, head capsule sepia-brown to pitch black, nose pitch black with reddish 



tip ........... R. coarctatus (p. 71) 



4 Soldiers dimorphic. " Points " of vestigial mandibles small but distinct. Head 



capsule in plan smoothly and regularly rounded behind constriction 



F. coatoni sp. n. (p. 58) 



- Soldiers monomorphic. " Points " of vestigial mandibles minute or absent. Head 



capsule in plan slightly angularly rounded behind constriction, often weakly 



sulcate at back ............ 5 



5 West Africa, N. Congo, Sudan . . . . . . . F. tenebricus (p. 68) 



- S. Congo, Angola, N. and S. Rhodesia . . . . . F. contractus (p. 61) 



Fulleritermes coatoni sp. n. 



(Text-figs. 104, 105, 114, 130-134, 169-171, 219 ; Map 14) 



Coarctoterm.es contractus (Sjostedt) ; Fuller, 1922 : 117. 



Fulleritermes contractus (Sjostedt) ; Coaton, 1962 : 152, [part : specimens identified by Fuller 

 (1922) only]. 



Imago. Head capsule very dark brown, almost pitch black, postclypeus and antennae, apart 

 from two yellow-brown basal segments, dark sepia brown, labrum brown posteriorly shading to 

 yellow at tip. Pronotum as head capsule, meso- and metanota and all other thoracic sclerites 

 and legs sepia-brown, except tarsi and tips of tibiae, which are yellow to yellow-brown. Abdom- 

 inal sclerites sepia-brown except anterior abdominal sternites paler brown in mid-line. Wings 

 translucent brown, darker at base, slightly greenish iridescent ; venation sepia brown or 

 outlined sepia brown towards wing base. 



Posterior margin of head almost semi-circular behind eyes ; fontanelle very small, short 

 Y-shaped, scarcely to distinctly paler than rest of head, almost obsolete in some males ; eyes 

 angularly ovoid, not prominent, and small relative to head width, W/E index 3-5-3-8 ; ocelli 

 small, oval, separated from eyes by \\ to 2 times own least diameter ; postclypeus strongly 

 inflated, width 1-9-2-0 times length, anterior margin nearly straight, posterior margin convex, 

 rounded ; antennae 14-15 segmented, usually 14, II, V and VI subequal, longer than IV, III 

 twice IV, often partly subdivided ; right mandible with posterior cutting edge of first marginal 

 exposed beyond second, longer than that of second marginal, molar plate moderately indented 

 near base, with 8 ridges. 



