372 Mr. H. W. Bates on the 
episternis confertim punctatis; elytris angustis, pone medium 
paulo ampliatis, apice flexuoso-truncatis, angulis externis 
solum dentiformibus ; supra lineatim foveolatis, apices versus 
striatis. 
¢ Antennis articulo 8° sequenti non breviori. 
Long. 53 lin. 
Hab. Ega. 
é (?) Robustior, colore obscurior ; capite latiori, thorace punc- 
tis majoribus, confluentibus ; abdomine glabro, pedibus sim- 
plicibus, femoribus paulo validioribus. 
Long. 53 lin. 
Hab. Para. 
Baron Chaudoir described this species from a female, agreeing 
in every respect with a second example of the same sex in my 
collection. I have no specimen of the male from the same 
locality, but believe the one found at Paré and described above 
belongs to the same species. I met with single individuals of the 
same or closely-allied species at other localities; it is impos- 
sible to decide whether they are distinct or not until further 
material is obtained.- Meantime the following diagnoses may be 
useful :— 
(a.) A. Chryseis, 2. 
Major, nigro-znea ; elytris late ceneis, antennis pedibusque ru- 
fescentibus ; thorace ut in 4. subenea, elytris truncaturé vix 
flexuosa, foveolis minoribus. 
Long. 64 lin. 
Hab. Santarem. 
(b.) A. curtula, &. 
Minor, robustior, nigro-gnea, elytris aeneo-cupreis; capite 
thorace latiori, oblongo-quadrato, angulis posticis rotundatis ; 
thorace prope apicem attenuato, dorso grosse rugoso-punc- 
tato, episternis plagiatim punctatis; elytris truncatura prope 
angulum externum sinuata, deinde usque ad suturam recta, 
foveolis plurimum confluentibus ; antennis immaculatis pedi- 
busque rufescentibus ; abdomine glabro, pedibus simplicibus. 
Long. 5 lin. 
Hab. Villa Nova. 
A. gracili affinis, (Lucas, Voy. de Castelnau, Entomologie, pl. ii. 
fig. 6, a.) 
If these two are to be considered as belonging to the same 
species as 4. subenea, I think it will be necessary to combine all 
three with 4. ruficornis of Klug, which is also an inhabitant of 
