268 Zoological Society : — 



upper labials, the third, fourth and fifth of which enter the orbit ; 

 155 ventral plates ; anal entire ; 44 pairs of subcaudals. Head with 

 the markings characteristic of the genus ; each half of the dorsal 

 band occupies one series of scales and two halves ; the lateral band 

 runs along the fourth outer series, touching the third and fifth. 



We were previously (Proc. Zool. Soc. 1860, p. 113) enabled to 

 enumerate 25 species of Siamese Reptiles, which number is raised 

 to 42 by the following list. 



Those which have been mentioned in the account of the first collec- 

 tion are marked with an asterisk. 



1. Dracuncidus maadatus, 12. Hemidactylus frenatus, 



Gray. Schleg. 



2. Draco tceniopterus, Gthr. *13. Gecko verus, Merr. 



3. Bronchocela cristatella, 14. Cylindrophis rufa, Laur. 



Kuril. 15. Python reticulatus, Schneidi. 



4. Acanthosaura armata, 16. Simotes tteniatus, Gthr. 



Gray. 17. Homalopsis bvccata, L. 



5. coronata, Gtbr. *18. Tropidonofus quincunciutvs, 



6. capra, Gthr. Schleg. 



*7. Calotes versicolor, Daud. 19. Dendrophis picta, Gm. 



8. Dilophyrus mentager, Gthr. 20. Rana tigrina, Daud. 



9. Leiolepis Bellii, Gray. *21. Oxyglossus lima, Tschudi. 



10. Tropidophorus microlepis, *22. Bufo melanostictus, Schn. 



Gthr. *23. Polypedates maculaivs, 



1 1 . Platyurus Schneiderianus, Gray. 



Shaw. 



May 14, 1861.— Dr. J. E. Gray, F.R.S., V.P., in the Chair. 

 Descriptions of Two New Species of Humming-Birds 



BELONGING TO THE GENUS HyPUROPTILA. By John GOULD, 



Esa., F.R.S., etc. 

 Hypuroptila urochrysa. 



Head and upper surface dark green, becoming of a bronzy hue on 

 the wing- and tail-coverts ; wings purplish brown ; tail rich golden- 

 bronze both above and beneath ; throat and breast grass-green ; 

 thighs, vent, and under tail-coverts pure white ; upper mandible 

 black ; under mandible fleshy-red, with a black tip ; tarsi yellow or 

 flesh-colour. 



Total length 4| inches ; bill 1| ; wing 2f ; tail If; tarsus \. 



Hab. Panama. 



Remark. — This species closely resembles the 77. Buffoni in size 

 and in the colouring of its body ; but the rich golden bronzy hue of 

 its tail at once distinguishes it from that and every other species. 



Hypuroptila Isaur;e. 



Head, all the upper surface, wing-coverts, flanks, and abdomen 

 coppery-bronze, inclining to purple on the lower part of the back 

 and upper tail-coverts; wings purplish brown ; tail very dark bronze, 



