BARBICORNIS. 



425 



Genus VIII. IJARIUCORN IS 



Barbicornis GodK, d^-c. 



Body small. Antennaj nearly filiform, clothed with setose scales. Fore wings long ; iiind wings small, each 



terminatiMo; in a lonff sioirle tail. 

 Head rather small, with a small tuft in front. 



Eyes moderately large, naked. 



Antennae not quite half the length of the fore wings, slender, neai'ly filiform, being slightly thickened towards 

 the extremity, composed of about thirty-six joints, clotiied with short setose incumbent scales. 



Labial Palpi minute, nearly horizontal, the tip scarcely porrected beyond the front of the eyes, compressed, 

 clothed witli fine setose hairs on the under side ; terminal joint minute, and ovate-conical. 

 Thorax small, ovate. 



Fore Wings elongate, subtriangular. Costal margin moderately arched ; apical angle rounded. Apical margin 

 very convex, entire. Inner margin straight, not so long as the apical one. Costal vein extending to the 

 middle of the costa. Postcostal vein witii three branches : the first and second arising near together at a little 

 distance before the anterior extremity of the discoidal cell ; the third branch arising at a short distance beyond 

 the cell. Upper disco-cellular vein obsolete : middle disco-cellular arising at about the same distance beyond 

 the second postcostal branch as exists between the first and second branches, slightly arched: lower 

 disco-cellular vein scarcely longer than the middle one, also slightly arched ; both together uniting to form a 

 transverse termination to the discoidal cell, by the junction of the latter vein with tlie third branch of the 

 median vein at a moderate distance from its origin. The upper discoidal vein arises conjointly with the middle 

 disco- cellular, and is continued in the same direction as the base of the postcostal vein, of which it might be 

 considered as the extremity. 



Uind Wings of moderate size. Costal margin curved ; outer angle strongly rounded. Outer margin pro- 

 duced in the middle into a long single tail (equal in length to the remainder of the wing), and traversed 

 by the second and third branches of the median vein. Costal vein extending nearly to the extremity of the 

 costal margin. Postcostal vein branching at a considerable distance from its base. Upper disco-cellular vein 

 forming the curved base of the discoidal vein, which arises at a little distance beyond the branch of the post- 

 costal, and extends to the base of the outer edge of the tail: lower disco- cellular obsolete, so tliat the discoidal 

 cell is open. Postcostal vein with its first branch arising at a moderate distance from its base ; third branch 

 arising beyond the middle of the wing, and running quite close to the second branch traversing the tail. Anal 

 angle produced into a prominent point or angle. Anal margin scarcely forming a canal for the reception of 

 the abdomen. 



Fore Legs of the male minute and densely feathered. Fore Legs of the female longer, scaly. The tibia and 

 tarsus of nearly equal length, slender. Tarsus articulated as in the hind legs; the intermediate joints armed 

 beneath with small s[rines ; terminal joint with small claws and pulvillus. 



Four Hind Legs slender, scaly. Femur beneath finely hairy. Tarsus rather longer than the tibia. Ungues 

 very thin and square at the base, with a deep notch on the inside, and with the terminal portion forming 

 an acute hook nearly at right angles with the base. Pulvillus large. Paronychia small, subquadrate, setose. 

 Abdomen of modei'ate size. 



The remarkable antenna; of this genus almost filiform, and clothed with long scaly hairs, give to the insects of which it is compojod 

 a strong resembhxnce to some of the Heterocerous Lepidoptera ; but the structure of the legs, and the arrangement of the wing \eins, 

 satisfactorily establish its afBnity to the Erj-ciiiidie. From the incorrect details hitherto published of its important organs, I have bee:i 

 particular in the description of those parts; thus, the veins of the wings are represented quite erroneously by M. Buisduval {Sp. gen. 

 Up. i. pi. 20. f. 3.), and in the Crochard edition of the Rcgne Animal, Insectes, pi. 143. f. 4 b. In the latter work (where, from th3 

 greater jiretension given to the delineation of the essential organs of the different genera, such inaccuracy was the less to be expected) 

 the upper and lower disco-cellular veins of the fore wings (closing the discoidal cell) are in an inaccurate position, the former arising 

 exactly in conjunction with the upper discoidal vein, w'hilst the hind wings are represented as destitute of a costal vein, the precostal 

 alone being given. The figure of the antenna given in this work is still more inaccurate, as it represents that organ as comjjosed of 

 only twenty-three joints, and as gradually attenuated from tlic sixth joint to the tip; wiiereas the terminal joints are the broadest, as 

 may be learned by denuding the antenna of its scales. Except in respect to the structure of the antenna;, and the discoidal cell of 

 the hind wings not being closed, there is scarcely any character to remove the present genus from the immediate vicinity of Helicopis 

 and Erycina, with which it also agrees in the peculiar structure of the claws of the feet. 



The species are natives of South America. 



BARBICORNIS. 



1. Barb. Basilis. 



Barbicornis Basilis Godurt, Enc. M. ix. p. 700. n. 1.; 

 Griffith, Animal Kingdom, pi. 102. f. 3. ; Boiaduval, Sj>. 

 gen. Up. pi. 20. f. .". ; Cuvicr, llcgnc Animal (edit. 

 Crocliard), Ins. pi. 143. f. 4. 4. a. 4. b. 

 Brazil. 



Barb. Mona. 



Barbicornis Mona Hcwitxnn MS. ; 

 Ilcwilion, Gen. D. Lep. pi. 70. f. 2. 



Doubl. Westw, Sj 



