1883.1 ■ 131 



I have only seen the ^. Hagen's ? (tristis) was from Guinea, 

 De Selys' ^ (Goliath) from Madagascar: I have three cJ, one from 

 Abyssinia, one from " West Africa," and one from Jellah Caffee (West 

 Africa), indicating a very wide African distribution (such a powerful 

 insect as this must be voy difficvilt to captui'e). My three ,^ agree 

 specifically, and also with the description of the type from Madagascar 

 (excepting unimportant sh'(/ht differences in size, &c.), but that from 

 Jellah Caffee is evidently immature, having the bx'own margining of 

 the membranule in the posterior wings only faintly indicated, and the 

 large yellowish-brown space near the middle of the wings is unde- 

 veloped ; nevertheless, it is only this immature specimen that shows 

 what is no doubt the natural green colour of the body (which has 

 become much changed in the others). The labium (as well as the 

 labrum) is bordered with black as is indicated by Hagen, but not 

 noticed by De Selys. The length of the abdomen given for tristis is 

 much less than that given for Goliath, and than in my specimens 

 (82 — 87 mm.), but this is a usual condition in Anax. Most other 

 points agree sufficiently, and I think the only discrepancies are due to 

 sex and change of colour through desiccation. This is one of the 

 largest and most powerful Dragon-flies in existence. 



Lewisliam. London : 



October, 1883. 



The Intterjlies of Camlridge. — The following is a list of the EJiopalocei-a I 

 have noticed or captured liere. I say noticed, as I am always loath to exterminate 

 rare or uncommon insects, and, as a rule, let a bvitterfly or moth of that description 

 enjoy its liberty when I have satisfied myself as to its identity. By Cambridge, I 

 mean the immediate neighbourhood of the town itself. I have frequently seen 

 insects reported as having been taken here that have really been captured at places 

 ten or fifteen miles away. I think such loose description should be avoided, or we 

 may for ever despair of seeing the insect fauna of Great Britain correctly mapped 

 out. Argynnis Aglaia, 'EuTpTirosyne, Selene; Vanessa urticce, exceedingly abundant 

 this year, polgchloros, lo, very abundant this year; Pyrameis Atalanta, abundant, 

 cardui; Apatura Iris (one) ; Melanargia Galathea (one) ; Satyrus Semele, not 

 common ; Epinephele Janira, Tithonus, abundant, Hyperanthus ; Ccenonympha 

 Famphilus, abundant; Lyccena Mgon, Icarus, abundant, Corydon; CoUas ISdusa 

 (one); Rhodocera rhamni ; Fapilio Ilachaon ; Anthocharis cardamines ; Fieris 

 napi, rapes, exceedingly abundant, hrassicce, exceedingly abundant ; Hesperia malvce, 

 Sylvanus. — Albert H. Waters, Mill Koad, Cambridge : October 8th, 1883. 



