PEEANTHEEIX. 59 



This species differs from P. bimaculata in having the mesonotum entirely black as- 

 well as the whole of the tarsi and the apex of the tibiae. The frontal sutures are not 

 at all so well developed, while the large fovea above the antennae is absent in P. bima- 

 culata, which has furthermore the frontal area deep. The mouth only is testaceous. 

 The apex of the wing is hyaline, while in P. bimaculata the cloud extends to the 

 extreme apex; the greater part of the stigma is black; the cloud fills the cubital 

 and radial cellules, while in the other species the first cubital and base of radial are 

 hyaline ; the transverse radial nervure is received nearer the base of the cellule ; the 

 spurs are much shorter. The antennae are shorter ; the two basal joints are subequal, 

 which is not the case with P. bimaculata, the second being with it longer than the 

 first, besides being more cylindrical. 



2. Perantherix bimaculata. (Tab. III. figg. 8, $ ; 8 a, tarsus ; 8 b, antenna ; 

 8 c, spurs ; 8 d, claws ; 8 e, top of maxilla, highly magnified.) 



Lutea, pilosa, antexmis (basi excepta), capite (facie excepta), maculis 2 mesonoti abdominisque apice et latera- 

 libus basi nigris ; pedibus pallide testaceis, tarsorum apice nigris ; alis flavescenti-hyalinis, apice infumatis, 

 stigmate flavo ; costa nigra, apice flavo. $ . 



Long. 8-9 millim. 



Hab. Guatemala*, Panima (Champion). 



Antennae 6-jointed, becoming slightly thickened towards the apex, densely covered 

 with bristle-like hairs ; second joint double the length of first, which is scarcely 

 one fourth shorter than the third, which is the longest. The three following become 

 gradually shorter, the apical sharply pointed. Eyes very large and prominent, parallel, 

 projecting in front, and occupying the greater part of the head, reaching to the base 

 of the mandibles. Clypeus truncated at the apex. Frontal furrows deep, broad, running* 

 down along the side of the eyes to opposite the antennae; frontal area shallow, longer 

 than broad ; the lower ocellus bounded behind by a deep furrow, which is sharply 

 pointed behind. Legs: four hinder tibiae with a longish sharply pointed spine on the 

 outside, not far from the apex ; four hinder spurs long and needle-like, one half of the 

 length of metatarsus ; inner spur on the anterior tibiae thicker than the outer and cleft at 

 the apex. Metatarsus longer than all the other joints together; apical joints truncated 

 at the apex and without patellae. The lobes of the mesonotum are not clearly indicated 

 by furrows, but in the centre of middle one is a deep furrow. The scutellum is large, 

 oval at the apex, truncated behind, the apex projecting and separated from the postscu- 

 tellum by a deep furrow ; cenchri not distinguishable. There is no blotch, but the base of 

 the abdomen is depressed ; the saw reaches to near the middle of the abdomen. Wings 

 with one radial and three cubital cellules ; the first cubital is more than double the 

 length of the second, and receives a recurrent nervure close to the apical third ; the 

 second cellule is longer than broad, and receives a recurrent nervure a little behind the 

 middle, where it is angled. , The, cubital nervure arises about three fourths of the 



11 2 



