336 Dr. C. P. Alexander on African Crane-flies 



Fitj. 9, First lamella of inaudible, x 350. 



Fi(/. 10. Left prehensor with part of presternum, ventral view. X 30. 



Fig. 11. Impression of tenth steruite. x 75. 



Plate XII. 



Mecistocephahis apator, sp. n. 



Fir/. 1. Head in outline, dorsal view. X 30. 



Fi(/. 2. Median region of labrum. X 195. 



Fig, 8. Maxillfe, ventral view, x 60. 



Fig. 4. First lamella of mandible, x 380. 



Fig. 5. liiglit prehensor and part of prosternum, ventral view. X 45. 



Fig. 6. Caudal end, dorsal view, x 45. 



Mecistoccphalus moiiticviens, sp. n. 



Fig. 7. Head in outline, dorsal view, x 30. 



Fig, 8. Anterior region of head, ventral view, the maxillae removed. 



X 45. 

 Fig. 9. Median region of labrum. X 195. 



Fig. 10. Left prehensor and part of prosternum, ventral view. X 45. 

 Fig. 11. Impression on tenth sternite. X 45. 



XXXTX. — Undescribed Species of African Crane-flies in the 

 Collection of the British Museum {Natural History) : 

 Ti[)uli(Uc, Diptera. — Part I. Subfamily Liiniiobiinse. By 

 Charles P. All;xandek, Pli.D., Urbaua, Illinois, U.S.A. 



[Concluded from p. 44.] 



TrentejiohUa (ffrentepohUa) Uganda, sp. n. 



Mesonotal prrescutum reddish brown with three darker 

 brown stripes ; pleura dark brown ; halteres pale ; legs 

 brownish yellow, the posterioi' tibiie with four long Ijristle- 

 like hairs near the tip ; wings yellowish with a solid dark 

 area at the cord and another in the apical radial cells of the 

 wing ; abdomen dark biown, the basal segments indistinctly 

 ringed with paler. 



Female. — Length about 9 mm. ; wing 8*7 mm. ; hind 

 femur 11 "8 mm. ; tibia 1]"5 mm. ; tarsus 7 mm. 



Piostium and palpi dark brown. Antenme dark brown. 

 Head dark brown, sparsely grey-pruinose. 



Pionotum dark brown. Mesonotal pnescutum light 

 reddish brown, with three darker brown stripes, the lateral 

 stripes less distinct than the median stripe ; lobes of the 

 scutum, scutellum, and postuotum dark brown. Propleura 

 reddish ; mesopleura and sternum dark brown, Halteres 



