PROTONEURA. 73 



pterostigma rhomboidal, fuscous, the interior part obscurer. (From 

 the description of De Selys.) 



Length near 27 milliin. Alar expanse 32 millim. 



Nab. Calisco, Cuba (De Selys). 



PROTONEURA SELYS. 



Quadrangular space oblong ; no second sector of the triangle 

 (cf. Poey, Ins. Cuba, p. 470). 



1. P. capillaris. 



Agrion capillare Ramb. Neuropt. 280, 30. Protoneura capillaris Selys, 

 Poey Ins. Cuba, 471. 



Extremely slender ; thorax steel-blue, above blackish-violet ; 

 abdomen hair-like, violet-black, the third segment extremely long, 

 marked with a large, pale greenish-blue spot; wings long, ex- 

 tremely narrow, hyaline; the pterostigma black, subquadrate. (J* . 

 From the description of De Selys.) 



Length near 20 millim. Alar expanse 35 millim. 



Hob. Cuba. (Collection of De Selys Longcharnps.) 



2. P. antennata. 



Agrion antennata Say, Journ. Acad. Pliilad. VIII, 39, 3. 



. Obscure bluish-green, somewhat metallic; head green be- 

 fore, mouth yellow, vertex and occiput black, the latter with a 

 glaucous band which is clavate at each end; eyes dark greenish, 

 above blackish ; antennae with the two basal joints thicker than 

 the others, equal in length, the second one cylindrical, the third 

 attenuated at base ; dorsum of the thorax with a glaucous stripe 

 each side ; feet pale, with a broad black line on the femora and 

 one on the tibice, excepting the posterior ones ; abdomen with a 

 blue band at the base of the segments, the sides green, venter 

 glaucous, with a black line ; wings hyaline ; pterostigma rhomb- 

 oidal. (From Say's description.) 



Length near 33 millim. 



Hob. Indiana. 



A species not seen by me. Say says: " Two basal joints of the 

 antennae subequal," but from the description and from analogy, I 

 conclude that, not the first and second segments, but the second 

 and third, are equal: the first segment is always very short in the 

 Agrions. 



