72 mr. s. g. rich 



Addendum. 



Since the above lines were written I have added five 

 species to our local Carabidae, all of them captured on 

 the summit of a hill about four miles from Salisbury, 

 and all of considerable interest. 



The first is a fine Macrochilus as large as M. bipla- 

 giatns and quite distinct from any known South African 

 species of this genus. 



The second and third are two Lebiidae, Metallica 

 jonnidulosa, Per., and Astata cognata, Per., previously 

 recorded from Natal only. 



The other two are Eudema impictnin and Chlacnius 

 mendax. 



The Collection of Aquatic Insect Larvae. 

 By S. G. Rich. 



In this country the aquatic insects — Odonata, 

 Ephemerida, Trichoptera, and the like — are known 

 mainly in their adult forms. Except where a species is 

 known also in other countries, the larva is almost always 

 unknown, and the life history undescribed; in these in- 

 sects as in other groups the new material available in 

 adult forms alone, has sufficed to keep collectors fully 

 occupied. 



For example, of our S.A. Odonata, the only species 

 whose larvae and life history are fully known are Pantala 

 flavescens, a cosmopolitan form, and Sympctrum 

 fonrohitnhei, found in Europe. Our Anax imperator is 

 of a sub-species, the variety mauricianns, whose larva is 

 not yet distinguished from that of the species in general. 

 Several of our genera, as Orthrtrum. Trithcmis^ Lestes, 

 are known as larvae through other species of the genera 

 found in more northern lands. 



