412 MR. A. G. BUTLER ON [May 4, 



at the base of horn. A subdorsal row of eye-spots, each consisting 

 of a green patch in a yellow oval, the first spot on the 5th segment 

 being the largest and most distinct, those on each following segment 

 becoming smaller, more flattened, and less distinct till lost on the 

 12th segment, sometimes becoming indistinct after the 7th or 8th 

 segment : these spots are only distinct as eye-spots on the 5th and 

 6th segments, that on the 6th being flatter than that on the 5th, 

 those on the remaining segments appearing like dashes while the 

 larva is green, but more like eyes on its changing colour ' when well 

 fed ; spiracles brown or dull pink; head, feet, belly, all green, rather 

 darker than the back ; the yellow at the bottom of the eye-spots 

 takes part in the subdorsal stripe. 



"Pupa, end of May and June : at the surface of the ground, under 

 dead leaves, rubbish, &c. Often in a green leaf turned over and 

 united by a few threads of silk, or between two leaves joined in a 

 similar way. 



" Imago, middle of June. About 2 or .3 weeks in the pupa state. 

 All my specimens changing the same year." 



25. Deilephila robertsi, sp. n, (Plate XXXIX. figs. 9, 10.) 



2 . Primaries above much elongated (more than in D. tithymali)', 

 chalky-white, with a snow-white basal spot, the markings consisting 

 of a large oblong subbasal patch, the costal border, a very large sub- 

 costal patch beyond the cell (with a rectangular excision out of the 

 infero-exterior portion), and a broad discal belt tapering towards the 

 apex bright olive; the second and third median veins white externally ; 

 external border very slightly tinted with lilacine, but scarcely per- 

 ceptibly ; a black spot close to base of internal border : secondaries 

 black with brown costal border, a dull rose-red discal belt com- 

 mencing on the abdominal border in a large snow-white patch, as in 

 D. hippophaes ; external border pale flesh-tint, fringe white : body 

 olive, sides of head and thorax, margins and fringe of tegulse, 

 antennoe and anterior margins of abdominal segments snow-white ; 

 the three basal segments snow-white at the sides, the two basal ones 

 with the white area interrupted by large velvety-black spots. Under 

 surface pale sandy greyish with a paler discal belt on the wings ; 

 primaries with a blackish nebula just beyond the cell ; secondaries 

 with a few blackish scales towards the anal angle. Expanse of wings 

 3 inches 1 line. 



On the upper surface of the primaries this species most nearly 

 resembles D. dahlii, of the secondaries B. hippophu!-s, of the body 

 I), esulce, and on the under surface D. lathyrus : the olive tint of the 

 tliorax and the markings on the primaries is greener than in any 

 species with which I am acquainted. 



"The larva of this was found on almost every plant of a species 

 of Euphorbia which is very common on the rocky hills here : the 

 larvae are very beautiful and conspicuous, and are very different in 

 colouring according to their different stages of growth. It is quite 



1 Viz. to a dark browu. 



