24,8 



MR. R. M £ LACHLAN ON A SYSTEMATIC 



Rambur's senex may possibly be this species. 



7. U. chlorops, Blanchard. (Ascal. chlorops. Blanch. Voy. d'Or- 

 bigny, p. 218, tab. xxviii. fig. 8.) 



Hab. Bolivia. 

 Indeterminable. 



8. U. limbata, Burmeister. (Ascal. limbatus, Burm. Handb. ii. 

 p. 1001. — Ulula limbata, Rarnb. Nevrop. p. 358. — A. inhonestus, 

 Walk. Cat. Brit. Mus. Neurop. p. 437 (?)— A. sublugens, Walk. Tr. 

 Ent. Soc. Lond. n. s. vol. v. p. 196 (?)) 



Hab. Central and South America. 



9. U. vetula, Rambur. (Ulula vetula, Ramb. Nevrop. p. 358. — Ascal. 

 subvertens, Walk. Cat. Brit. Mus. Neurop. p. 437.) 



Hab. South America. 



How far my appreciation of the synonymy of the last two spe- 

 cies may be correct remains to be proved. Possibly several good 

 species may be erroneously grouped together under the names ; 

 but they vary so much that it is impossible to form a correct opi- 

 nion without extensive series from many localities. 



The three species diagnosed below are very distinct, and un- 

 doubtedly new. 



10. U. mexicana, nov. sp. Antennae nigrse, tenuiter flavo-cinctae ; 

 clava nigra, flavido-terminata. Frons vertexque fusco-villosi. Thorax 

 niger, supra rufo-maculatus, infra cinereo-villosus. Pedes picei ; 

 tarsis nigro-annulatis. Abdomen nigrum, brunneo-varium. Alae 

 latae, ad apicem vix acutae, vitreae ; pterostigmate nigro-fusco ; venis 

 venulisque nigris : posticae macula magna triangulari prope basin 

 marginis interioris, fusca, ornatae. Long. corp. 12-13"'; exp. alar, 

 antic. 25-29"', postic. 23-27"'. 



Hab. Mexico. In De Selys's collection and in the Oxford Museum. 



Much resembles Cordulecerus surinamensis, F. An individual 

 in the Oxford Museum, probably immature, wants the spot on the 

 hind wings. 



11. U. ampla, nov. sp. Antennae flavidae, tenuiter nigro-cinctae ; 

 clava nigra. Frons flavus, fusco-villosus. Occiput flavum, transverse 

 griseo-strigatum. Thorax rufo-ochraceus, supra fusco-varius, infra 

 cinereo-villosus. Pedes flavi; tarsis nigro annulatis. Abdomen rufo- 

 ochraceum, supra utrinque oblique nigro-strigatum, infra infuscatum. 

 Ala3 latae, in medio dilatatae, vix acutae, vitreae, vel in posticis ad api- 

 cem flavido-fumosis, vel omnino fumoso-tinctae ; venis venulisque 

 nigris ; pterostigmate in anticis flavo, in posticis fuscescente. Long, 

 corp. 13"'; exp. alar, antic. 29-33'", postic. 26-30"'. 



Hab. St. Domingo. In my own collection and in Brit. Mus. 



