R. Londinensis, as its name implies, is found in tlie vicinity 

 of our capital, even as near as Copenhagen Fields ; it has no 

 stigma. R. qffinis is a smaller species, the male of which is 

 figured in Kirby and Spence's Introduction to Entomology 

 (pi. 3. f. 6.); R- macuUcollis is very similar to R, Londinensis^ 

 and R. megacephala and Ophiopsis appear to me to be the 

 same. 



The larvae are described by Latreille as very nimble and 

 voracious, living upon small insects, and concealing themselves 

 in crevices in the bark of trees ; the pupae, like the rest of 

 the Order, have the power of locomotion. The perfect insect 

 also feeds upon smaller ones, its long moveable thorax 

 enablmg it to seize its prey in any direction with great facility ; 

 and it is able to bite with considerable force with its acute 

 mandibles, which it can extend considerably. 



The ovipositor is exceedingly dissimilar to those of any 

 other insects ; by Latreille's description and my own obser- 

 vations, it appears to be formed by two canals united, with a 

 space between, being composed of transverse rings which 

 enable the insect to propel the eggs to the apex, where they 

 are received and deposited by the two appendages, in clusters 

 like fly-blows. 



The month of June appears to be the season for all the 

 species in the imago state, and they are stated to prefer the 

 neighbourhood of streams ; the specimen however figured in 

 the plate, with two or three others, were beat out of White- 

 thorns in rather high ground in the New Forest. 



The plant figured is Veronica Chamadrys (Wild Ger- 

 mander). 



