250 NOVITATES ZOOLOGICAB XXIII. 1916. 



in P. clarki (text-fig. 2) and P. scutata, and an apical one in P. perplexa (text- 

 fig. 4) and P. pellenia. 



The " Chanchamayo ? " example, which has been in onr collection for more 

 than a dozen years, is much rubbed, but the other two specimens before us are in 

 a very good state of preservation. Mr. Clark's specimen, of which the forewing 

 has a length of 48 mm., whereas the wing of the type measures only 41 mm., bears 

 in the centre of the antenna a diffuse black patch, of which there is just a trace in 

 the type. 



4. Protoparce lefeburei Gue'r. (1844) 



Protoparce lefeburei, Kothschild & Jord., Nov. Zool. ix. Suppl. p. 82, No. 50 (1903) (partim). 



Since the publication of the "Kevision" we have received a series of specimens 

 of a new form of Protoparce similar to lefeburei. While investigating this new form 

 we found that what we considered to be lefeburei was a mixture of two species, our 

 fresh material affording conclusive evidence to that effect. One of the species is 

 undoubtedly incisa Walk. (1856), and the other we treat as lefeburei, the description 

 of lefeburei agreeing very r well with the specimens. 



We have P. lefeburei in the Tring Museum from Honduras, Costa Rica, West 

 Colombia, Venezuela, Trinidad, Rio Madeira (Amazonas), Sonth-East Peru, Para- 

 guay, Rio de Janeiro, and Santa Catharina. The abdomen of this species has no 

 black dorsal line ; the proximal half of the forewing is rather darker than the apical 

 half, the brownish black discal streak runs obliquely from the base of R 3 to the apex 

 of M 1 , not being parallel with these veins, and the whitish patch at the hind angle 

 contrasts with the proximal area more or less conspicuously. The genitalia of the 

 male have been figured by us I.e. The shape of the tenth sternite is particularly 

 characteristic, the sternite being long and narrow, deeply cleft, with the lobes 

 strongly curved upwards, the tips almost being rolled up. The penis-sheath bears 

 two small teeth. 



The female genital armature figured by us I.e. is that of P. incisa. In 

 P. lefeburei the eighth abdominal sternite of the female is so much swollen in the 

 centre as to form a large tubercle, whereas in P. incisa the sclerite is evenly convex 

 transversely, forming a kind of arch. In both species the anterior side is excised 

 for the reception of the postvaginal tubercle. The seventh sternite of lefeburei ^s 

 sinuate centrally as in P. incisa, but the lobes bordering the sinus are more obtuse 

 than in that species. 



5. Protoparce incisa Walk. (1856) 



Protoparce lefeburei, Rothschild & Jord., I.e. (1903) (partim). 



This species can be recognised by the abdomen bearing a more or less con- 

 spicuous black dorsal line, by the proximal half of the forewing being paler than 

 the apical half, and the black discal streak parallel with the veins and therefore 

 forming an angle with the costal portion of the streak. The transverse lines in the 

 outer half of the forewing are usually more strongly marked than in P. lefeburei. 

 The tenth tergite of the male is less slender than in P. lefeburei in a lateral aspect ; 

 the tenth sternite is broader and shorter, not nearly so deeply cleft, the lobes being 

 about as long as they are broad. The harpe is larger than in P. lefeburei, the 

 dentate portion more rounded, and the apical process longer and for the most part 

 naked. The penis-sheath has a row of teeth at the apical margin, the row ending 



