1865.] 



233 



slightly undulating, its fore-part very slightly concave. Hind-wings 

 rounded at the tips.* 



P. POECELLUS ; common in collections, generally distributed. 



Geuus 6. — Deilephila. Nine species. 



A. Head and thorax with a white lateral streak. 



B. Abdomen Avith a row of white spots on the back. 



C. Margins of fore-wings paler than the ground colour. 



D. Fore-wings with white lines. D. eiyoenica. 



DD. Fore-wings without white lines. D. Dahlii. 



CC. Margins of fore-wings of the same colour as the ground 



colour. [D. ZTGOPHTLLI. 



E. Inner margin broadly white. D. titiitmaei & 

 EE. Inner margin concolorous. D. galii. 



BB. Back of the abdomen not spotted. 



F. Abdomen with a white basal fascia on seg- 

 ments 4 to 6, interrupted in the middle. 



D. EUPHORBIA & D. NICiEA. 



FF. Abdomen with segments 4 to 6 unspotted. 



D. HIPPOPHAES, and the false species 



D. EPiLOBii,Bd.,andD. tespertilioides, 



Bd. ; the former of which is a hybrid 



between D. vespetiilio and D. eupJwrhice, 



and the latter a hybrid between D. vesjper- 



tilio and D. hippophdes. 



AA. Sides of the thorax not white. D. vespeetilio. 



D. LivoENiCA. South Europe. Tolerably common in collections. 



D. etjphoebItE. Generally distributed ; common in collections. 



D. Nic^A, De Prunner, 3" 3"'-3" 8'". Fore-wing grey, base white, 



next to which is a dark green band, slightly bordered outside with 



white. Near the centre of the costa is a large dark green spot, and 



nearer the tip are one or two other costal markings ; near the anal 



angle is a large dark green band, which narrows suddenly, and branches 



off at almost a right angle to the tip. Hind-wing black, with a central 



flesh-coloured band, having a white spot at the anal angle ; hind margin 



broadly pale flesh-colour. VI. IX. 



Larva very pale rose colour, with two contiguous eyes on the back 

 of each of the last ten segments ; pupil orange, ring black. A lateral row of 



* Walker's genera, Pergeta and Anceryx, are founded on extremely natural groups of exotic epecies. 

 I have abriilged the characters of these genera, onlj- retaining enough to divide them from the larger 

 genera from \»hich they have been separated, and omitting the more minute distinctions. 



