26 



the parasites does not appear to let out any blood. It is a well-known 

 fact that the intestines and fluid in the body o£ a caterpillar are slightly 

 under pressure, and the puncturing of its body-wall with a needle gene- 

 rally lets out at least a drop of haemocoelic fluid. Now this pressure is 

 of course no longer present after the exit of the parasites ; the host's 

 body shrinks somewhat, and it is not till the holes are repaired by the 

 cells, and the body-wall of the caterpillar has shrunken further, that 

 the pressure becomes renewed. This happens at the end of a week ; at 

 this stage rough handhng of the caterpillar may rupture some of the 

 holes, and immediately a drop of haemocoelic fluid exudes. 



Subsequently, the caterpillar recovers to a certain extent, and in 

 many cases it can make spasmodic movements of its whole body, when 

 stimulated. In rare cases it is able to travel a short distance from the 

 mass of cocoons. I have found Pieris brassicae larvae to live at least 

 one month after the exit of their parasites ; during this period they 

 move very little, though head movement may occur at periods, and 

 they finally become di-ied up and die. 



Examination of the haemocoelic fluid of parasitized larvae failed to 

 reveal any A^ery obvious differences when compared with the blood-fluid 

 of non -parasitized caterpillars. 



BlBLIOGEAPHT. 



(1) Gatenby, J. Bronte. Polyembryony in the Parasitic Ilymenoptera 

 A Review. Quart. Jouru. Micr. Soc. vol. Ixiii. 



{;2) . Notes on the Embryology, Anatomy, and Life-History of Parasitic 



Hymenoptera. Journ. Linn. Soc, Zool. 1918. 



(.']) Hegner, Robert. Studies on Germ Cells : IV. Protoplasmic Differen- 

 tiation in the Ovocytes of certain Hymenoptera. Journ. Morph. 

 vol. xxvi, 1915. 



(4) BuCHNER, Paul. Vergleichende Eistudien : Die akzessorischeu Kerne 

 des Hymenoptereueies. Arch. f. mikr. Auat. 91 Bd. 1918. 



24, Walton Well Road, Oxford. 

 December 1918. 



NEW AND LITTLE-KNOWN SALTATOEIAL DASCILLIDAE : 

 SUPPLEMENTARY NOTE. 

 BY G. C. CHAMPION, P.Z.S. 



During the course of publication of this paper, the concluding 

 portion of which was issued in December 1918 (Ent. Mo. Mag. liv.), 

 two species of Scirtes from Fiji have been handed over to me for deter- 

 mination ; and an example of >§. subcostatus. I.e. p. 193, from N.E. 



