AMBLYPODIA. 477 



Genus VIII. AMBLYPODIA. 



AMnLYPoniA Tlorfijidil, E. DouUcday. 

 AuHOPALA Boi.stJnvii/, Blandiard. 

 DipsAS E. Doubleday. 



Body robust : wings large, generally banded beneath ; hinder pair tailed. 



Head moderate size, clothed with scale-like hairs foriiiing a slight conical tuft on the crown. 



Eyes large, circular, naked. 



Labial Palpi of nioderatc length, obliquely porrected, extending in front about the length of the head : the 

 terminal joint horizontal, and not elevated more than half the height of the eyes. Basal joint short ; second 

 joint much more elongated, rather slender, bent at the base, thickly clothed with adpressed scales ; terminal 

 joint varying from nearly half to about one tliird of the length of the middle joint, slender, finely scaly, 

 attenuated towards the tip, wliich is obtuse, and being rather longer in the females than in the males. 



Antenna? short, not more than two fifths of the length of the fore wings, slender, gradually but slightly increasing 

 in thickness from the base so as to form a long slight club, of which the knob is not distinct ; joints short, not 

 ringed with white ; tlie tip rather obtuse. 

 Thorax robust, thickly clothed above with scales, and at the sides with hairs. 



Fore Wings large, subtriangular. Costal margin very much arched, especially near the base ; apical angle 

 subacute. Apical margin generally straight, or but slightly convex. Costal vein not extending half the lengtli 

 of the costa. Postcostal at a considerable distance from the costa, with two branches arising before tlie 

 anterior extremity of the discoidal cell ; the vein itself slightly angulated at about the same distance beyond 

 the origin of the second branch, as exists between the first and second branches ; a third branch arises at a 

 greater or less distance beyond the discoidal cell, the extremity of the postcostal running to the tip of the wing ; 

 sometimes this third branch is very short, and arises much nearer to the tip of the wing than to the extremity of 

 the discoidal cell ; and in a few instances a fourth branch exists very near to the tip of the wing. The u[)per 

 disco-cellular vein varies in its position according to the greater or less extent of the discoidal cell : where the 

 latter is more or less truncate it is very short, and more or less transverse ; but where the extremity of the 

 cell is of a more oval form it is longer and more oblique. The middle disco-cellular vein is short, much less 

 oblique or more transverse ; and the lower disco-cellular is rather longer than the middle one (both being 

 slender), and united with the third branch of the median vein at a moderate distance beyond its origin. 



Hind Wings large, rounded, or broadly ovate, the hinder margin generally produced at the extremity of the first 

 branch of the median vein into a tail of greater or less length ; the extremity of the second branch of the 

 median vein, and sometimes also the end of the submedian vein, being angulated or produced into slender tails ; 

 the tail of the submedian vein in some species being even longer than that of the first branch of the median, 

 the anal angle itself being produced into a more or less prominent lobe. The postcostal is branched at a 

 moderate distance from the base of the discoidal cell, and is closed by the two disco-cellular veins, which are very 

 delicate; the inner one uniting with the third branch of the median vein at a short distance from its origin. 



Fore Legs slender, nearly alike in size and also in general appearance in both sexes previously to their being denuded 

 of scales; about two thirds of the length of the hind legs: those of the male having tlie tarsus formed of a 

 single long joint, compressed, truncated at the tip, with a few very sliort bristles; those of the female distinctly 

 five-jointed, the joints armed beneath with strong spines at the tips, and the extremity furnished witli a pair 

 of small slender ungues and a moderate-sized pulvillus. 



Four Hind Legs short, slender, scaly. The two tibial spurs strong and acute. Basal joint of the tarsus as long 

 all the rest. Ungues and pulvillus short. 



Caterpillar elongate-ovate, depresso-scutate, sometimes widened and rugose towards the head. 

 Chrysalis short, tliick, entire or slightly rugose; head-piece rounded. 



I have endeavoured to retain together in the present genus a number of species, amongst which arc sonic of tlic largest and finest in 

 the family, and all of which arc natives of the Old World, and chiefly of Asia and the adjacent islands. The naked eyes, scaly paijii, 

 antenna; composed of very short joints, destitute of wiiite rings, and especially peculiar in being destitute of a regular knob, termi- 

 nating instead in a long gradually formed club, are the chid' characteristics. The ty|)es of the genus are the large Indian Amb. 



