68 INSECUTOR INSCITI^ MENSTRUUS 



Prothorax half as long as head and (inclusive of coxse) 

 twice as wide as median dorsal length ; median line and an- 

 terior margin conspicuously thickened ; the usual two pairs 

 of long bristles at posterior angles pointed ; midlateral bristles 

 and the two pairs on anterior margin minute. Pterothorax 

 longer than wide. Wings colorless ; fore pair with about 20 

 accessory hairs on posterior margin. Fore tarsi with a short, 

 stout tooth. 



Abdomen slightly wider than pterothorax, subreticulate dor- 

 sally with anastomosing lines. Tube 0.9 as long as head and 

 twice as wide at base as at apex, sides nearly straight. Lateral 

 abdominal bristles long, pale, and pointed. 



Measurements of holotype (female): Length 2.86 mm.; 

 head, length 0.420 mm., width across eyes 0.228 mm., behind 

 eyes 0.210 mm., near base (least width) 0.182 mm.; eyes, 

 length 0.121 mm., width 0.064 mm., interval 0.100 mm. ; 

 postocular bristles, length 0.099 mm. ; prothorax, length 0.204 

 mm., width (inclusive of coxae) 0.406 mm. ; pterothorax, length 

 0.528 mm., width 0.432 mm. ; abdomen, greatest width 0.480 

 mm. ; tube, length 0.384 mm., width at base 0.111 mm., at 

 apex 0.055 mm. 

 Antennal segments : 12 3 



Length (^i) 60 78 125 



Width {\x) 43 37 34 



Total length of antenna, 0.662 mm. 



Described from one female taken in flight, near the Rufigi 

 River, East Africa, June 1, 1917, by Lieut. Arthur W. Jobbins- 

 Pomeroy, of the Nigeria Regiment, British Expeditionary 

 Force, after whom the species is named. ^ 



' Two years ago, in Psyche, Vol. XXIII, p. 11, I allowed myself the 

 privilege of naming in his honor an interesting Thysanopteron taken 

 by Lieut. Pomeroy at Ossidinge, Kamerun. Since then his duties in 

 Africa have taken him to many places and each is represented in the 

 collection before me by specimens taken under trying conditions. The 

 dedication of the present species to him is intended as a tribute, in a 

 small way, to his steady endurance of the difficulties and privations of 

 military service and his continued devotion under such circumstances to 

 systematic entomology. 



