380 MEDICAL ENTOMOLOGY 



the front and middle ones, pale yellowish. Inferior clas- 

 pers of male with a very short stem to the foot-like termi- 

 nal process; superior claspers as in palpalis. . ... tachinoides. 



Small and stoutly built. Abdomen asm palpalis, but with 

 the usual transverse dark bands more evident. Thorax 

 dusky grey with four greyish-black, triangular blotches. 

 Legs almost uniformly infuscated. Superior claspers of 

 male curved and terminating in a claw-like point. . . fuscipes. 



Abdomen almost unicolorous, but darkening gradually to- 

 wards the margins posteriorly. Superior claspers of male 

 straight and gradually narrowed, truncate and spinose at 

 the apex . . pallicera. 



Group 3 (Morsitans Group). 



A. Tips of hind tarsi only dark or black. 



Both sexes with the front and middle tarsi yellow. Third 

 segment of antennae long and narrow, apex pointed. 

 Superior claspers in male very similar to those of longi- 

 palpis, with a flange-like projection internally, the breadth 

 of which is greater than the width of the stem of the 

 clasper at the point of its origin. ..... pallidipes. 



B. Tips of all the tarsi dark or black. 



Abdomen often with a large dusky red-brown area trans- 

 verse bands on third segment may be either widely sepa- 

 rated and faintly indicated medially, or strongly pro- 

 nounced and narrowly separated. Superior claspers in male 

 terminating in a tooth-like process on outer angles, the 

 internal flange-like projection much narrower than stem 

 of clasper, and not produced distally into a median lobe, longipalpis. 



Abdomen with the median stripe usually much wider on the 

 third segment than on the fifth. Median lobes of the 

 superior claspers in male converging distally ; outer angle 

 of claspers without any tooth-like process .... morsitan*. 



Abdomen with the transverse bands sharply defined medi- 

 ally, median stripe usually of uniform width on the 

 third, fourth and fifth segment. Median lobes of the 

 superior claspers parallel ; outer angle of claspers without 

 any tooth-like process submorsitans. 



Glossina palpalis, Robineau-Desvoidy. (Plate LI, rig. 1.) A dark 

 medium-sized species; length of male, according to Austen, 8 to 9 mm. : 

 length of female 8'6 to 10'2 mm. Thorax bluish grey to olive grey, with 

 brown markings which are described by Austen as follows : ' A narrow 

 ' stripe on each side of the median line, interrupted before reaching the 

 ' transverse suture, and again before reaching the hind margin; the section 

 ' of each stripe behind the suture is expanded posteriorly, and the terminal 

 ' portion of the stripe immediately in front of the hind margin takes 

 ' the shape of a pair of more or less confluent ill-defined spots, sometimes 



