28. HEMIDIANEURA. 49 



2. Hemidianeura mexicana. 



Ptilia mexicana, Cresson, Trans. Amer. Ent. Soc. viii. p. 3 (1880). 

 Hab. Mexico. 



3. Hemidianeura scapularis. 



(Plate III. fig. 15.) 



Exp. al. 5J lin., long. corp. 3 lin. 



Black, shining ; scapulae, sides of thorax, mouth, and legs testa- 

 ceous ; "basal half of the femora, tips of the hind tibiae, and the hind 

 tarsi black. Wings hyaline, slightly clouded, with black nervures. 



Hab. Mexico. 

 a. $ . (Type of species.) Oajaca. M. Salle". 



4. Hemidianeura plumicornis. 

 Hylotoma plumicornis, Klug, Jahrb. d. Insect, i. p. 241, n. 60 (1834). 

 Hab. Brazil. 



5. Hemidianeura nigricornis. 

 (Plate III. fig. 16.) 



Exp. al. 9 lin., long. corp. 3J lin. 



Testaceous ; head above, antennae, extremity of abdomen, and 

 tibiae and tarsi black ; the front tibiae and the articulations of the 

 front tarsi whitish on the inside. Wings hyaline, brownish at the 

 extremities; fore wings with the base, costa, and stigma piceous. 



Appears to be closely allied to D. jolumicomis. 



Hab. Amazons. 



a. 2 • (Type of species.) Santarem. H. W, Bates, Esq. 



6. Hemidianeura gonagra. 



Hylotoma gonagra, Klug, Jahrb. d. Insect, i. p. 241, n. 61 (1834). 

 Hab. South Brazil. 



7. Hemidianeura ovalis. 

 Hylotoma ovalis, Klug, Jahrb. d. Insect, i. p. 241, n. 62 (1834). 

 Hab. Montevideo. 



8. Hemidianeura ephippiata. 

 Hylotoma ephippiata, Klug, Jahrb. d. Insect, i. p. 242, n. 63 (1834). 

 Hab. Surinam. 



