30 Uullclin dl' la Sociéic EiilvìiioUujiquc d'Eijijpte 



nono had survived — and 1 therefore decided to 

 scardi i'or it in the neighhourhood o£ Cairo. 



Last Novemher ^vhilsl collectinju a(jniili(' ('.oleop- 

 tera and Dijjleia al i\)iirah,ni\ atlenlioii was allraclod 

 by a s})iiiy-Iea\ed plani ^^lli^■h occiucd })iot'iisel\ in 

 a certain pond and Avhich is a i'avotirite resort of a 

 nnmher of snails, leeches and other animais. 



Some of this plant an as brought to the laboratory 

 of the School of Médecine and placed in several glass 

 jars in water. The follow ini,^ day two aquatic cater- 

 pillars were found which were immediately isolated 

 in a smaller aquarium together with small clean 

 bits of i\ajas nKtrina. 



The caterpillars when fii-st seen possessed a 

 complete ada})tation to aquatic life, namely, branchial 

 res[)iration. It an as of a ])ale transparent whitish 

 yellow with a brown head. Along the sides of the 

 body are found transparent bramdiial filaments 

 supplied by s})e(4al air-tubes. Some of the filaments 

 ajc singl(\ others spring from a common point, 

 three or four logdher. My great desire was to describe 

 this larva in detail, but a change in its habits pre- 

 vented me from carrying out this investigation. 



The larva made for itself a sheath by fastening 

 two or three of the Aay'a.s leaves together by silk 

 threads. This formed an oval, lens-shaped promi- 

 nence w*ith an opening at one end. Through this 

 openiiig the larva was seen to push out its head and 

 th-e fore parts of its body for fee>ding. As far as I 

 coidd see this larva resend^led that of Paraponyx 

 sfraliotala descril)ed by Miall (1912). 



After being kept in the laboratory for a fev\ 



