ETHIOPIAN NASUTITERMITINAE 37 



N. hirticeps closely resembles several South American species. N. nigriceps 

 (Haldeman, 1858) is not readily distinguishable from it except by its darker coloura- 

 tion ; in view of the age of the types it is possible there has been some fading in 

 preservation, though the appearance of the specimens does not suggest this. N. 

 macrocephalus (Silvestri, 1903) is larger, and the soldier postmentum bears scattered 

 setae, but it is otherwise closely similar. 



I consider it desirable in the circumstances to name N. hirticeps as a new species 

 in the list for the Ethiopian Zoogeographical Region, with the proviso that further 

 material and information may lead to its inclusion in an already established species 

 from elsewhere. 



Holotype soldier. Island of Sao Thome : Binda, 1918 {A. F. de Seabra, 

 " with Cephalotermes "), A.M.N.H. 



Paratypes, same data as holotype, A.M.N.H. & B.M.(N.H.). 



Nasutitermes infuscatus (Sjostedt) 

 (Text-figs. 14, 15, 62-68, 205, 206; Map 8) 



Eulermes infuscatus Sjostedt, 1902 : 40. Type locality : Nyasaland, Zomba. 

 Eutermes usambarensis Sjostedt, 1904 : 103. Type locality : Tanganyika, Usambara Moun- 

 tains. 

 Termes (Eutermes) infuscatus (Sjostedt) Desneux, 1904a : 43. 

 Terntes (Eutermes) usambarensis (Sjostedt) Desneux, 1904a : 46. 

 Eutermes (Eutermes) infuscatus Sjostedt ; Holmgren, 191 2 : 62. 

 Eutermes infuscatus Sjostedt ; Sjostedt, 1026 : 318. 

 Eutermes usambarensis Sjdstedl : Sjostedt, [926:322. 

 Nasutitermes infuscatus (Sjostedt) Snyder, 1049 : 280. 

 Nasutitermes usambarensis (Sjostedt) Snyder, 1949 : 300. 



Imago. Head capsule chestnut brown, postclypeus and antennae yellow-brown, labium pale 

 yellow-brown. Pronotum and abdominal tergites chestnut brown, meso- and metanota brown 

 Abdominal sternitcs pale brown laterally, narrowly paler, yellow-brown in mid-line. Legs pale 

 yellow-brown. 



Posterior margin of head behind eyes nearly semi-circular, only slightly sinuate immediately 

 behind eyes ; fontanelle distinct, paler than rest of bead, Y-shaped ; eyes short oval, moderately 

 prominent in proportion to own diameter but not large relative to head width, YV/E index 

 3-0-3-5 ; ocelli small, separated from eyes by slightly less than own least diameter ; post- 

 clypeus moderately inflated, width 2-8-3-0 times length, anterior margin slightly concave or 

 sinuate, posterior margin convex, rounded, distinctly sinuate towards outer corners ; antennae 

 15 segmented, II longer than III and IV which are subequal and slightly longer than V. 



Cerci of $ as long as width across base, slightly irregularly conical. 



Measurements (11 specimens from 4 localities) in millimetres. 



Range Mean 



Head width across eyes 1-20-1-38 . . 131 



Greatest diameter of eye 0-37-0-44 



Ocellus . . . o-io-o-ii x 014-017 



Ocellus to eye . . 0-07-0-10 



Width of pronotum . 1-00-1-13 



Length of pronotum . 0-58-0-72 



Length of hind tibia . 1-54-1-73 



Length of fore wing . 11-60-11-90 



0-41 

 •11 X 015 

 008 

 1-08 

 068 

 163 

 n-77 



