41 



belongs, at least in the south parts of England, although it appears much rarer in 

 the more northern parts of the kingdom ; it is, however, widely dispersed. There 

 are two broods in the course of the year, the first appearing at the beginning of the 

 summer, and the second at the beginning of August. 



ARGYNNIS AGLAIA. THE DARK GREEN FRITILLARY BUTTERFLY. 



Plate XXVI. fig. o— p. 



Synonyms. Papilio (Nymph. Phal.) Aglaia. Linn. Syst. Nat. ii. 785. Lewin's Papil. pi. 11. Bonov. 

 Brit. Ins, 9. pi. 302. $ . 

 Argynnis Aglaia, Ochsenheimer, Leach, Stephens. Duncan Brit. Butt, pi. 15. fig. 1. 

 The Great Fritillary Butterfly, with Silver Spots, Wilkes Eng. Moths fy Butt. pi. 115. 



Upper Side. The head, thorax, and abdomen are brown. The wings in general are orange 

 brown, spotted all over with black, as may be seen at (0). 



The under side of the superior wings is yellow, and spotted with black ; having a series of 

 pearl-like spots along the fan edge, seven in number. The inferior wings are also yellow, having 

 twenty-one spots of a pearUike or silver appearance, exclusive of that on the abdominal edge, see 

 fig. 0). This fly is very like that in Plate 28 ; but that is brown between the silver spots, this 

 clouded with green. 



The caterpillar had not been seen by Harris. They fly in June, in private recesses of woods. 



Expansion of the wings 2| — 2§- inches. 



This handsome species occurs plentifully in various parts of the south of 

 England, in woods, meadows, and heaths. It is also found in various parts of 

 Scotland, and abundantly near Durham. The caterpillar is dusky, with a pale 

 yellowish back, and a row of eight square red spots along each side. It feeds on 

 the dog's violet. 



HYDROCHARIS CARABOIDES. THE BLACK OVAL WATER BEETLE. 



Plate XXVI. fig. e—i. 



Synonyms. Dytiscus Caraboides, Linn. Syst. Nat. ii. p. 664. Martyn Coleop. pi. 34. fig. 28. 



Hydrophilus Caraboides, Fabricius, Leach. Samouelle Compend. pi. 3. fig. 16. Curtis 



Brit. Ent. pi. 159. 

 Hydrocharis Caraboides, Latreille, Westw. Introd. to Mod. Class. (Gen. Syn.) p. 9. 



This beetle is of a dark olive colour on the hack, as at (g) : the belly is somewhat lighter, 

 inclining to an olive brown, as at (h) ; the hinder feet are formed for swimming. 



The larvae, which is represented at (e), may be found of different sizes, in June and 

 July, in stagnant ponds : their food is commonly the caterpillars of other water insects ; indeed 

 they are so rapacious, that they will destroy insects much larger than themselves. When ready 

 for their change they go into the earth, making a hollow cell, wherein they change to the pupa, 

 shewn at (/), and the beetles appear in August. It is shewn flying at (i), displaying its mem- 

 branaceous wings. 



Length of the body three-quarters of an inch. 



G 



