^•1 Revised S//;if'/isis ()/' t/tc 7\'>i lue- F/ies. 151 



narrower, and the niar;;iii;il strini between tlie coxiu are more 

 sinuous. 



Hub. JIarcopata, Peru, ^laiiy examples. 



Pachylvpus lepidulus, Br. 



Tills species has been found in some numbers by ]\Ir. J. J. 

 A\'alker at Wellington, Westport, Sumner, New Brighton, 

 and Timaruin New Zealand. It has similar habits to those 

 ot" tiie European P. maritinius, Steph., and has one curious 

 character — the club of the antenna is emarginatc at the 

 apex. 



EXIM.AXATIOX OF PLATE VI. 



Fiy. 1. Nipofiius canalicollis, Lew. (Ann. >fc Ma<r. X. II. 1!)01, viii. p. .S"()). 



Fiy. 2. „ jmrvulus, Lew. (lOut. Moutli. Mag. x.vix. p. Ibl, 18'.j;3j. 



Fiij. .'}. „ A/ulreuesi, Lew. (/. c. p. IB^J). 



I'll/. 3 a shows the form of prosternal .strite. 



J-ii/. 4. Kiponius striatiifps, Lew. 



I'll/, i). Knkvsoma vespertiitum, Lew, 



J'ii/. •') (I .«liow3 the facial outline. 



Fii/. 0. Orectosre/is humeraliif, Le\v. (Ana. i\: Mag. X. If. UtO-'}, xii. 



Fiij. 7. StcHotruphis cuvifrons, Lew. (up. cit. l!)v)2, x. j). 'S-V-j), 



XXII. — ^1 Revised Synojjsis of the Tsetse- F/ies (^Genus 

 Glossina, Wied.\ with Notes on Glossina tachinoides, 

 Westwood. By Ejjnest E. Austen. 



In the writer's INlonograph *, publislied last year, seven 

 sj)ecies of the genus Glossina were recognized and described. 

 i\s was only to be expected, the increased attention j)aid to 

 the tsctse-tlies of late, due in great measure to the identifica- 

 tion by Colonel David Bruce of one of the species [Glossina 

 paljialis, Kob.-Desv.) as the active agent in the dissemination 

 (if the dread disease of Trojncal Atrica known as JSleeping- 

 tSickness, has led to the collecting of these insects in greater 

 numbers. The result is that it is now possible to form a 

 somewhat clearer view of the different species and their charac- 

 teristics than was feasible at the time that the Monograj)h 

 was written, when the amount and condition ot the material 

 available for examination left much to be desired. Tlie 

 Conclusions now arrived at are embodied in the amended 

 .synopsis of species printed below. 



* 'A Monograph of the Tsetse-Flies [Genus 6r7w,s,sv«^, Wiedoniaun]: 

 ba.sed on the ("ollection in the IJiiti-h Mnscuni.' 15y Mrnest Ldwuid 

 Austen. Loudon: I'riuted bv Order of the Trustees. I'JOo.. 



