âû Bulletin de la Société Entomologique d'Egypte 



llie Ironl oT Ihc piolhorax. These are soinewhal cluh- 

 shaped, with a shoil Iransversely \vrinkled stalk and 

 a cylindrical lerniinal pari, which is nìnch longer and 

 wider than the si, ilk. There is a spirally arranged 

 row of small circular I'oraniina heginning at the base 

 of the staik and ending at the summit of the trumpet. 

 The legs of the lly enclosed in their pnpal sheaths 

 are straight, and reach to the beginning of the second 

 abdominal segment. The tii)s of the wnig sheaths 

 also reach to the beginning of this segment. All the 

 exposed abdominal segments, as in many other pupae 

 of this and other families, are protected by dorsal and 

 ventral plates whose hinder margins are provided with 

 backwardly directed spines. The last abdominal seg- 

 ment bears live pairs of large spines, one terniinal 

 two dorsal and two ventral. They enable the pupa 

 to move about either in water or in semi liquid tilth 

 and also beli) to keep the respiratory appendages ex- 

 posed to the air. When placed in water the pupa 

 floats at the surface with the body inclined at an 

 angle of about 45" to the surface of the water and the 

 respiratory appendages l)rcaking the surface film. The 

 al)domen can l)e bent to eilhei' side and can also be 

 slightly flexed and extended. 



While this note was in the printers hands, I re- 

 ceived Mr. A. Tonnoir's recent article on African Psy- 

 chodidae (1920) which contains a very detailed des- 

 cription of T. mevidiondUü, ICaton, based on the exa- 

 mination of 200 speeiinens froni various sources. 



The following brief description ol" the external 

 features of the lly are based on his excellent account, 



