289 



Odontocheila Osebti, Lucas, Voyage de Castelnau, Entom., p. 37 

 (nec fig. 7, pi. 1, a). 

 This is a fine and distinct species of the cayennensis group, dis- 

 covered by the Castelnau expedition in 1846, and recently obtained in 

 considerable numbers at Pebas, Upper Amazons, by Mr. J. Hauxwell. 

 The figure given by Lucas is totally opposed to his description with 

 regard to colours, and seems to have been taken from 0. ruhefacta, mihi ; 

 O. Oseryi has the legs of a rich dark blue, with the sole exception of 

 the hindmost tibiae, which are saffron-yellow. 



Odoj^tocheila tegchanteeica, n. sp. O. margineguttatce {Dej.) 

 forma et colore similis, differt autem trochanterihus anoque testaceo-albis, 

 Cylindrica, thoracis laterihus rectis : supra fusco-cuprea, thoracis elytro- 

 rumque laterihus cyaneis, horum marginihus alho-tri-guttatis ; suhtus 

 saturate ccerulea, trochanterihus anoque alho-testaceis, pedihus violaceis, 

 genuhus tihiisque posticis ohscure rufo-testaceis, lahro antice rufo-testaceo. 



Long. 5|- lin. ^ $ , 



This was a common species in dark forest pathways at Para, flying 

 and running on the sandy ground, and over bushes. The description is 

 taken from 8 examples perfectly agreeing with each other. 



Odoistocheila etjgattjla, n. sp. 0. margineguttatce affinis, sed 

 miyior. Gi/lindrica, nigro-cuprea, pedihus cyaneis, trochanterihus femori- 

 busque hasi rujo-piceis ; lahro ohscuro, marginihus late testaceis ; thorace 

 angusto, medio apicem versus paulo rotundato, supra suhtilissime trans- 

 versim strigoso, margins postico Icete cupreo ; elytris marginihus cyaneis^ 

 albo-tripunctatis, puncto mediano magno, triangulari ; supra vix incsquali- 

 bus, creberrime punctato-rugosis, rugis suturam versus longiorihus magisque 

 distinctis ; suhtus omnino cyanea. Long. 4| — 5 lin. $ . 



Allied to O. margineguttata, but smaller, the elytra much shorter 

 in proportion, the median marginal spot much larger, surface blacker 

 in colom' and more distinctly rugulose. It resembles also O. eximia 

 (Lucas) in size and general colour, but diff'ers in the finer punctuation 

 and less uneven surface of the elytra. The colour is a blackish bronze, 

 with the sides of the etytra gradually shading into brassy-green, then 

 into blue, and finally, on the margin, into violet. As in O. margine- 

 guttcda, the abdomen is wholly dark blue ; the legs are also of this 

 colour, with the exception of the trochanters and extreme base of the 

 femora, which are dark pitchy- red or brown. 



Common at Obydos, on the northern side of the Lower Amazons ; 

 all the specimens examined agree in the characters above given. 1 

 did not find the species on the Upper Amazons or at Para. 



