THE SOLDIERLESS TERMITES OF AFRICA 237 



A. cuniculator is usually distinguishable from A. choanensis in the imago by the 

 less conspicuous fontanelle and flat medial spot. In the worker caste, the much 

 shorter mixed segment of the gut is the most characteristic feature. In the other 

 species, A. scapheutes, the imago postclypeus has a sinuate hind margin, and the 

 fontanelle is practically obsolete. The worker has a long mixed segment like 

 A. choanensis but the enteric valve seating has a short neck and three definite lobes, 

 the postclypeus is less inflated, and the fore tibia more so. 



Holotype $ imago, paratype <$ and $ imagos, and workers from type-colony, 

 Ghana: 40 m. from Tumu on Lawra Road, 16.iii.1959 (W. A. Sands, Coll. No. 

 S.2458), in British Museum (Natural History). 



Other paratype material. Ghana: 60 m. north of Ejura on Tamale Road, three 

 nest-series, 24.il. 1959, 55 m. from Tamale on Damongo Road, 3.iii.i959, 35 m. from 

 Tamale on Yendi Road, two nest-series, 4.iii.i95g, 40 m. from Tumu on Lawra 

 Road, 16.iii.1959, 6 m. north of Wa on Lawra Road, 19.iii.1959, 52 m. south of 

 Wa on Sawla Road, 20.iii.1959, 19 m. from Sawla on Damongo Road, 21.iii.1959, 

 12 m. from Damongo on Tamale Road, 24.iii.1959 (W. A. Sands); Aburi, 1926 

 (W. H. Patterson); Kumasi, 3.11.1955 (W. V. Harris). Gambia: Abuko, I3°24'N., 

 i6°39'W., 10. ix. 1966, between Sanyang and Gunjur, i3°i5'N., i6°46'\Y., 16. ix. 1966, 

 35 m. from Bathurst on Manso Konko Road, 18. ix. 1966 (\V. A. Sands). Nigeria: 

 Mid-Western Region (Benin Province), Obanokoro, Sobo Plain, 8.1.1957 

 (W. Wilkinson); Northern Region, Samaru, near Zaria, 25. iv. 1959 (W. A. Sands). 



Nineteen nest-series of this species were examined and all the material is in the 

 British Museum (Natural History). 



Nearly all of the records are from the surface layers of mounds of other termites, 

 mostly those of Macrotermes or Odontotermes but with a few others such as Cubi- 

 termes and Trinervitermes. It appears to be a savanna species with a fairly wide 

 distribution in West Africa. 



Adaiphrotermes scapheutes sp. n. 



(Text-figs 642-645 & 656-661 ; PI. 9, fig. 12) 



Imago. Queen only known, colour therefore probably faded. Head capsule yellow-brown, 

 brown above ocelli; fontanelle almost obsolete, minute, oval, flat, brown; medial spot larger 

 than fontanelle, one-third diameter of ocellus, flat, yellow-brown; postclypeus pale yellow- 

 brown, labrum yellow; frontal marks indistinct flat crescents, pale yellow-brown; antennae 

 yellow. Pronotum, meso- and metanota, pale yellow-brown, mesonotal suture absent, metanotal 

 suture present; legs, femora and tibiae yellow, tarsi yellowish white. Abdominal tergites 

 pale yellow-brown, dorsal stigmata darker, yellow-brown ; sternites, laterally yellow, paler in 

 middle, ventral stigmata pale yellow-brown, cerci yellowish white. 



Posterior margin of head capsule evenly rounded; ocelli medium-sized, separated from 

 compound eyes by two-thirds own least diameter; postclypeus larger and rather strongly 

 inflated, Pcl/W index 0-32, hind margin sinuate, not evenly rounded, median suture weak. 



Pilosity of head capsule uneven, not forming a pelt, yellow. 



Measurements (one specimen) in millimetres. 



Head width across eyes (VV) . . 083 



Ocellus (O w x Oi) . . . 0-07 x 010 



