23. SCOBINA. 24. GYMNIA. 41 



2. Scobina melanocephala. 



Hylotoma melanocephala, St.-Farg. Mori. Tenthr. p. 48, n. 140 

 (1823). 



Hab. Amazons. 



a-d. <S 5 . Amazons. H. W. Bates, Esq. 



3. Scobina bicolor. 

 (Plate in. fig. 6.) 



Exp. al. 7 lin., long. corp. 3 lin. 



Head, antennae, scutellum, pectus, abdomen, and legs black ; thorax 

 and scapulae luteous. Pore wings smoky hyaline, darker at the base ; 

 hind wings hyaline, clouded at base. The fore wings have a black 

 spot near the extremity of the first median cell, and another in the 

 second cubital cell ; the nervule which divides the first and second 

 cubital cells is incomplete. 



Mr. Cameron has indicated this species to me as his Dielocera (?) 

 crassicornis ; but the neuration does not agree with his description. 



Hab. Amazons. 

 a ' 2 • (Type of species.) Villa Nova. H. W. Bates, Esq. 



4. Scobina gibba. 



Hylotoma gibba, Klug, Jahrb. d. Insect, i. p. 245, n. 77, pi. ii. fig. 7, h 

 (1834). 



Hab. Tropical America. 



a,b. $ . Ega. H. W. Bates, Esq. 



c. 2 ' Honduras. Mr. Dyson. 



24. GYMNIA. 



Gymnia, Spin. Mem. Accad. Torino (2) xiii. p. 23 (1853). 

 Trailia, Cameron, Trans. Ent. Soc. Lond. 1878, p. 148. 

 Hylotoma, sect. 8, Klug, Jahrb. d. Insect, i. p. 249 (1834)*. 



1. Gymnia urcacensis. 



Trailia urcacensis, Cameron, Trans. Ent. Soc. Lond. 1878, p. 149, 

 Hab. Rio Purus. 



2. Gymnia analis. 



Trailia analis, Cameron, Trans. Ent. Soc. Lond. 1878, p. 149. 

 Hab. Brazil. 



* Brulle (Hym. iv. p. 668) quotes Gymnia, St.-Farg. MS., as equivalent to 

 the female of Didymia ; but if, as I believe, the former name was never otherwise 

 published, it can hardly be considered to be thus preoccupied. Themos, Norton, 

 appears only to differ from Gymnia by the first submarginal cell receiving both 

 recurrent nervures, whereas in Gymnia they are received by the first and second, 



