326 NYMPHALID^. 



Genus LXXXVI. AMATHUSIA. 



Amathdsia Fabricms, Syst. Gloss. 

 MoRPHO p. God'. 



McERA Hiibner, Verzeichniss bek. Schm. 

 ThorjESSA Boisduval MS. 



Body ratlier small, very haiiy ; wings large ; hind pair ^vith two large ocelli, wide apart, on the under side, and with 



a short broad tail at the anal angle. 

 Head rather small, hairy, with a small, frontal, conical tuft of hairs ; neck sliort. 



Labial Palpi rather slender and compressed, porrected obliquely to about the length of the head, and raised at 

 the tip nearly to the level of the top of the eyes, not united into a conical beak, scaly beneath ; the back of the 

 second and third joints hairy, the hairs of the middle joint being erect, and resting on the front of the face 

 and side of the frontal tuft ; terminal joint ovate-conic. 



Antenna; about three sevenths of the length of tlie fore wings, slender, not straight ; the joints very distinct. Club 

 lono-, very gradually formed, and very slender, finely carinated beneath, articulations distinct, the terminal 

 ones gradually acuminate. 

 Thorax ovate, very hairy, neither large nor robust. 



Fore Wings large, elongate-triangular. Fore margin very much arched ; apical angle rather rounded. Apical 

 margin about two thirds of the length of the anterior, entire, slightly concave ; inner angle rounded. Inner 

 margin nearly straight, rather narrowed towards the base. Costal margin long, extending to two thirds of 

 the leno-th of the costa. Postcostal vein slender ; the first branch nearly at the distance of one third of the 

 wing from the base, extending to the costa at about three fourths of its length ; second, third, and fourth 

 branches arising close together, at about three fourths of the length of the wing ; the second and third very 

 short, joining the costa-, the fourth longer, extending to the tip; the remainder of the vein extending to the 

 apical margin below the tip. The upper disco-cellular vein arising from the postcostal at about two fifths 

 of the length of the wing, extremely short and oblique. Middle disco-cellular twice its length, and transverse. 

 Outer disco-cellular very long, strongly angulated in the middle ; the anterior part continuing in the same line 

 as the middle disco-cellular ; the posterior part very oblique, uniting with the median vein at a distance from 

 its base equal to half the distance between the bases of the first and second branches of the median vein, thus 

 closing the discoidal cell in an acute point at nearly half the length of the wing ; the third branch of the 

 median vein beyond the junction much arched, or rather angulated, at about the same distance beyond the 

 junction as exists between the first and second branches of the median vein. 



Hind Winqs subtriangular. Costal margin arched ; outer angle rounded. Outer margin with wide but not 

 deep scallops. Anal angle produced into a broad short tail extending between the extremity of the first branch 

 of the median vein and that of the submedian vein. On the upper side near the anal margin, and parallel 

 with the extremity of the abdomen, there exists in the male a small tuft of hairs set on obliquely; and between 

 this tuft and the first branch of the median vein is an elongated folding of the wing, within which lie concealed 

 a few elongated pale hairs. The precostal vein is curved at its tip towai'ds the body. Costal vein 

 curved, but extending only to two thirds of the length of the costa. Postcostal vein branching very near its 

 base; its first branch extending to the outer angle of the hind wings. Discoidal cell very narrow, open. 

 Median vein branching far from tlie base, with a considerable distance between its first and second branches ; 

 at about the same distance from the base of its third branch as exists between the first and second branches, 

 is a thickening or swelling of the disc of the wing between this branch and the discoidal vein, forming, as it 

 were, an incomplete termination of the discoidal cell. 



Fore Legs of the male small, slender. Postcostal hairy, forming a slender brush of nearly equal thickness 

 throughout. Tibia curved at the base. Tarsus about two thirds of the length of the tibia, simple. Fore 

 Lecjs of the female considerably longer than tliose of the male, scaly. Fenuir much longer than the tibia, 

 which, with the tarsus, is gradually but slenderly dilated to the tip of the limb, where it is obliquely truncate. 

 Tarsus about two thirds of the length of the tibia ; the basal joint about two thirds of the length of the whole 

 tarsus ; the remaining articulations being distinctly visible through the scales, which are set on so widely as 

 almost to conceal the .short spines with which the under sides of these joints (except the terminal one) are 

 armed. 



Four Hind Legs long, rather slender. Tibia armed beneath with a double row of spines. Tibial spurs strong. 

 Tarsi armed beneath with four rows of fine spines ; terminal joint of the tarsi wide. Ungues and their append- 

 ages short. 

 Abdomen moderately robust, that of the male having the terminal joints furnished on each side with four tufts of long 

 curved hairs; terminal joint armed above with a long horny deflexed double acute hook, with several corre- 

 sponding shorter horny pieces beneath. 



