some British Guiana Hymenopfera. 319 



«l,e.e there is a small curved Wa^kish hook. The ho k 

 at the end is evidently tor the l'«'-P°f . °' '^^f ^^j*' ,ife 

 in ninee From the above it seems that the caterpuiai 

 nSysed by the parasite at the time oi opposition. 

 FroTobervatLs made on previous occasions howev 

 it would appear that paralvsis does not, or at least d e^ 



ifl hatched and that the young Larva was peacefully 

 The eoo-period is therefore very short-about one aay. 



ind was spinnmg a cocoon m ^'^^'^l^p'^ll' ^^l 

 lirval iDcriod too, s very short— about lour days, ine 

 Siel o°f both'the egg. and la™l stages can b ™^ 

 rpflflilv understood, when it is remembered that tHe larva 

 reau rL resf^o^ and has only a single caterpi lar on 

 wS to feed It of necessity therefore has to get through 

 fmpidlv before extreme decomposition is reached, and 

 do an its -rowing in that short time. The larva pupa ed 

 a? the angle between the shoot -d the g ass^ p^^^^^^^^ 

 +},P funnel nrobablv on account of the latter sniinkm^ 

 th^ouXdrying of the shoot. From other observations I 

 know that the^arval period is sometimes certainly a week. 

 OnThe morning of t^lie 31st the perfect insect emerged 

 Pupal period therefore about fourteen days. Time from 

 rSymg to adult is therefore about nineteen days 

 The Joco^on is transparent and constructed of c lose^ 

 woven silk, giving a membranous appearance In shape 

 cylindrical, blunted at both ends. Colour whitish. Length 

 2-1 cm., diameter -4 cm. 



/. obscuricarinatus, Cameron. Issororo, i\ . vv .u. 



