( 204 ) 



The eye is almost circular in all A(/anaidfi£, a little more rounded in front tliaii 

 behind, not triangularly |)rojecting beneath, as in Af/nrislidae. When viewed from 

 the side, with the oliject somewhat higher than the eye of tlie observer, the eye of 

 Aganaidae shows a faint trace of emargination. or rather depression, near the 

 antennae. 



The antennae are always sexually different, and their structure is, at least in 

 the male sex, often convenient to prove specific distinctness of superficially similar 

 forms. The antennae of the females are the more siraiile ones, and may therefoie 

 be described and compared first. 



The joints (PI. IV. figs, n to 11) are compressed, being vertically thicker than 

 transversely; as the compression takes place especially ventrally, the transverse 

 section of a joint has an ovate outline. The degree of compression is somewhat 

 different according to the species; it is lowest in A. caricae (F.), and seems to 

 be highest in A. ecjens (Wlk.). The basal joints are cylindrical, or nearly so, and 

 the apical joints are also less compressed than the middle ones. Tlie ape.x of eacli 

 joint is ventrally produced into a tooth ; the apical joint, which is longest and 

 thinnest of aU, is at the tip produced into a thin cone. The last but one joint 

 is as long as broad, or slightly shorter, and is always shorter than the last but two; 

 the preceding ten to twelve joints are also longer than broad. The joints con.sist 

 of an internal and external chitinous sheath, and are clothed dorsally with scales 

 and laterally and ventrally with hairs. There are two transverse rows of elongate 

 scales on each joint, amongst which stand, besides, some tliin hairs. The apical row 

 of scales projects uiion the base of the next joint. 



The hairs, which form a moderately dense covering upon the ct)iivex sides and 

 the ventral portion of the joint, are very fine, short, and depressed, and are longer in 

 A.egens (y\\\i.^,heliconia (Jj.^fpnpunna (Boisd.), and others, than in .1. (•"/•(«(e (F.j. 

 Each joint bears two f)airs of large bristles: the ventral pair is situate (one 

 bristle at each side of the joint) near the apex; t;he other pair is basal, subdorso- 

 lateral, and stands near the base of the basal row of scales. The subdorsal bristles 

 are always longer and thicker than the ventral ones; both pairs vary in length, 

 rather considerably, according to the different species. Besides these four bristles, 

 there are, as mentioned before, some dorsal bails projecting from between the two 

 rows of i^cales, and these hairs assume on the apical joints a more or less bristle-like 

 character, but remain always thinner than those principal bristles. 



The antennae of the males are built uj) after the same type, but are always 

 different in every species in certain jwints from those of the respecti\'e ftmali's. 

 They are more comjiressed ; the free ventral portion is higher, more cariniform ; the 

 joints, especially tlic apical ones, are shoHor; llie clothing of tliiii liairs is longer, 

 at least near the base and ai)ex of the joint, and the bristles are much stronger. The 

 last but one joint is in all nudes shorter than it is vertically broad. In detail there 

 is rather much variation amongst the different species, not only in respect ((j the 

 length of the hairs and bristles and the size of the joints, but also as regards the 

 structure of the joints. There are three principal modifications of the male antennae 

 of Asota, which may here be represented by the antennae of -1. cirlcne (F.), 

 A. Iieliconin (L.), and A. coatooia (Anriv.). 



In A. caricae (F.) the ajncal joint is twice as long as broad, the penultimate 

 one is somewhat shorter than broad, the ])receding six joints are somewhat longer t ban 

 broad, and the following ones become gradually broader than long, the middle joints 

 being about one-fifth broader than long. The ventral coni|iressed ililalation of the 



