O'J TF.XTirRK DINIDJ5. 



2. Camptopriuin atripenne. 

 Ilylotoma atripennis, Fair. Sytst. Piez. p. l'7, n. 26 (1804). 



I/iib. South America. 

 a. 2- Tapajos. H. W. Bates, Esq. 



3. Camptopriuin humerale. 



(Plate VI. fig. It;.) 



Exp. al. !) lin., long. Corp. 4 lin. 



Steel-blue; a spot at the base of the wings above, front legs 

 (tarsi and a line on the outside tibiae excepted), intermediate coxae, 

 and undersurface of femora and p< pi a dark spot in 



front of each of the intermediate reddish testaceous. Wings 



smoky brown, with very wide and distinct bnllar lines running 

 through the submarginal and discoidal cells, and above the anal veins. 



Possibly the male of the lasl 

 Hah. Amazoi . 

 a. <$ . (Type of specii m. II. W. Bates, I 



4. Camptoprium ( ? ) nigriceps. 

 (Plate VI. fig. 18.) 

 Exp. al. 7-8 lin.. long. Corp. 3 lin. 



as, darkesl on the thoras ; head and antennae 

 black; four hind tibiae and tarsi fu . antennae with only I" 



joints, less distinctly separated than in the other Wings 



fuscous, slightly iridescent : a large bulla :.t the outer angle of the 

 first discoidal cell, the diverging bullar lines only faintly indicat 

 a very distinct whit I tin- ba , and a black 



in the second submarginal cell. 



Closely resembles l'< ?)anomala; but the antenna' differ 



so much that 1 dare uot unite them a- Bexes. 



Hob. Mexico. 

 a, b. <5 . (Tj pecies.) Orizaba. M. S 



42. ACHERDOCERUS. 



Shape of S( landria. Antennae short, 9-jointed, second joint very 

 short, third rather longer than the others, which are pear-shaped 

 and much widened at the extremity : head transverse, very small, 

 not more than half the width of thorax. Wings with one marginal 

 appendiculate cell and four submarginal cells, tl id and third 



each receiving a recurrent nervure ; lanceolate cell very small, 

 petiolated ; at the outer angle of the first discoidal cell is a large 



