lAERA. 269 



Germs LI. lAERA. 



Iaera nuhn. 



LiMENiTis p. E. Douhleday. 

 Etena and Limenitis p. Boisd. 

 Nrin'HALis God'. 



Body rather slender ; head large ; fore wings long ; hind wings rather broad but short. 



Head large, nearly as broad as the thorax, hairy on the crown, without a decided frontal tuft ; head of the female rather 

 smaller. 



Eyes very large and prominent in both sexes, naked. 



Antennce very long, nearly equal to two thirds of the length of the fore wings, and also equal to the entire body, 

 slender, nearly straight ; terminated by an elongated, slightly curved, and gradually formed club, with a slender 

 keel along the inner edge. 



Labial Palpi small, slender, directed upwards, scarcely projecting more than one third of tlie lengtli of the head, 

 but with the tip elevated rather above the level of the top of the eyes, thickly clothed with short hairs. Basal 

 joint short, curved, and furnished with longer hairs on the under side ; middle joint elongate, slender, 

 somewhat compressed, with a slight elongated tuft of short hairs on the upper side next the face ; terminal 

 joint very short, slender, and acute at the tip. 

 Thorax small, oval, finely hairy, slightly tufted at the sides of the metathorax. 



Fore Wings long, narrow. Fore margin considerably arched, apical angle rounded. Apical margin scarcely 

 more than half the length of the fore margin, slightly convex, and very slightly sinuated. Inner margin two 

 thirds of the length of the latter, slightly convex from the base to beyond tlie middle, subemarginate towards 

 the anal angle. Costal vein extending nearly to three fifths of tlie length of tlie fore margin, to which it is 

 united by an angle. Subcostal vein slender; the first branch emitted before the anterior extremity of the 

 discoidal cell, and extending to three fourths of the length of the fore margin ; the second branch emitted 

 considerably beyond the discoidal cell, rather beyond the point of union of the costal vein with the costa ; 

 second, third, and fourth branches arising at equal distances apart, the fourth being as long as the space 

 between its base and that of the third subcostal branch. Upper disco-cellular vein almost obsolete, emitted 

 from the subcostal vein just beyond the origin of the first subcostal branch. Middle disco- cellular short, 

 slightly arched, and forming a continuous line with the lower disco-cellular, whicli is considerably elongated, 

 oblique, quite distinct, and united to the third branch of the median vein at a little distance from its base, 

 closing the discoidal cell with a rather obtuse point. Median vein and its branches strong and wide apart, 

 the thiixl branch considerably arched. 



Hind Wings broad, short, subtriangular. Fore margin nearly straight, but much curved at the base ; outer angle 

 rather acute. Apical margin slightly sinuated, and very slightly convex. Precostal vein short, nearly straight. 

 Subcostal vein branching at about one fourth of the length of the wing from the base. Upper disco-cellular 

 vein forming the curved base of the discoidal vein, and arising very near the branch of the subcostal vein. 

 Lower disco-cellular wanting, the discoidal cell being open and narrow. (It is, however, distinct but very 

 slender in I. Coenobita, arched, and arising at a little distance from the subcostal branch, and uniting with the 

 third median branch at a little distance from its origin.) 



Fo7'e Legs of the male very small and slender, pectoral; clothed from the base to the extremity with long, slender, 

 white hairs. Tibia slightly curved, as long as the femur. Tarsus nearly as long as the tibia in I. Crithea, 

 but very short in I. Coenobita. Fore Legs of the female small, denuded of long hairs; with the tarsus about 

 two thirds of the length of the tibia, shghtly dilated, and obliquely truncate at the tip, with short spines 

 indicating the tarsal joints. 



Four Hind Legs very long and slender. Femur finely squamose. Tibia clothed witli narrow scales, and armed, 

 especially beneath, with numerous short spines. Tibial spurs long and slender. Tarsus long, thickly armed 

 beneath with short spines, those of the apical joints nearly equal to the following joints in length. Claws very 

 much curved, acute, and slender, dilated at base. Paronychia bilobed ; outer lobe as long as the claw, setose. 

 Pulvillus very short and broad. 

 Abdomen slender and elongated, marked with pale transverse fasciaa. 



Transformations unknown. 



The extraordinary length of the autennje and legs, the almost recurved very acutely tipped labial palpi, the elongated fore wings, 

 the larger head, and the arrangement of the branches of the subcostal vein of the fore wings, are the chief characteristics which have 

 induced me to separate these insects from Limenitis, with which they have been united by Boisduval and E, Doubleday, and to which 



