290 



[May, 



Many of the new species of Odontocheila obtained by me hav© been 

 described by the Baron de Chaudoir, in the Bulletin d. 1. Soc. Imp. des 

 Nat. de Moscou, 1860, but the following complete list will be useful in 

 comparing the productions of the Amazons region in this genus with 

 those of other parts of Tropical America. 



1. O. Oseryi, Lucas ; Pebas, Upper Amazons. 



2. O. ruhefacta, Bates ; R. Huallaga. 



8. O. femoralis, Chaudoir ; St. Paulo, Upper Amazona. 



4. O. ocreata, Eeiche ; R. Tapajos. 



5. O. erythropus, Chaud. ; Ega. 



6. O. rujipes, Dejean ; Para. 



7. O. postica, Chaudoir ; St. Paulo, Upper Amazons. 



8. 0. Trilby ana ^ Thomson ; Upper Amazons, common. 



9. O. distinguenda, Chaudoir ; Para. 



10. O, trochanterica, Bates ; Para. 



11. O. margineguttata, Dej. ; Ega. 



12. O. confusaj Dej. ; common throughout the Amazons region. 



13. O. ruyatula, Bates ; Obydos, Lower Amazons. 



14. 0. eccimia, Lucas (rJiytijptera, Chaud.j ; St. Paulo, Upper Amazons. 



15. O. cyanella, Chaudoir ; Ega, rare. 



16. 0. amahilis, Chaudoir ; Ega, rare. 



17. 0. Batesii, Chaudoir ; St. Paulo, Amazons. 



18. O. Castelnaui, Lucas (=0. Batesii, local var.) ; Pebas, Upper 



Amazons. 



19. 0. Lacordairei^ Gory ; general throughout the Amazons region. 



20. O. cJirysis, Eab. ; St. Paulo, Amazons (agreeing precisely with 



Surinam specimens). 



21. O. egregia, Chaud.; Amazons, from Obydos westward; in cacao 



groves. 



PsEUDOXTCHEiLA TAESALis, n. sp, Saturate-ccBrulea, elytris plages, 

 magna atro-velutina^ maculam parvam transversam pallide-ocJiraceam 

 includenti ornatis ; apice prolongatis, suturd in dentem latum 



recurvum productd ; tarsorum intermediorum et posticorum articulis basali- 

 hus dmhus paulo incrassatis, subtus nudis, grosse punctatis. 



Long. 8 lin. ^ . 



Differs from the allied species m its rich dark indigo-blue colour, 

 and the pale hue of the elytral spot. In the ^ > also, the apex of the 

 elytra at the suture is much prolonged, and forms a broadish tooth 

 curved a little outwards. The underside is rich dark blue, and the 

 legs are shining black. A remarkable feature is the perceptible thicken- 



