4IO ENTOMOLOGICAL NEWS [Dec., 'OQ 



family by de Selys : Eyes posteriorly with a graniform pro- 

 longation, a bundle of hairs at the external antero-distal ex- 

 tremity of the first femur, first tibia with an inferior distal 

 lamella, auricles on the sides of the second abdominal seg- 

 ment, hind wing with the anal margin excavated and with 

 an anal triangle. 



The other members of the genus Ncocordulia, to which this 

 newly-found insect belongs, are Brazilian and none have yet 

 been found in the territory between Brazil and Costa Rica. 



Neocordulia longipollex n. sp. 



$ Vertex and frons metallic purple, the former rounded and convex 

 at tip, the latter with a deep median groove, both punctate and clothed 

 with blackish hairs. Nasus and labrum black, rhinarium and labrum 

 reddish brown, occiput and rear of the head black, hairs on the rear 

 of the head yellowish or pale brown, on the other parts named darker. 

 Thorax brilliant metallic green with bluish reflections, most of the 

 pectus reddish brown ; clothed on all sides with hairs, mostly pale 

 colored, except on the upper parts of the mesepisterna, where they are 

 fuscous, longest on the lower parts of the sclerites named. 



Abdomen enlarged at segments 2 and 7-10; black, ventral margins of 

 the tergites of 2-8 narrowly cream colored or yellow. Segment 10 

 with a mid-dorsal carina continued into a mid-dorsal prolongation of 

 the posterior margin of the segment. 



Superior appendages as long as 9 and 10, in dorsal view straight, 

 slightly enlarged at the apex which is somewhat rounded laterally and 

 slightly truncated mesially; in profile view barely convex superiorly, 

 slightly enlarged at the apex which is rounded ; 

 except for the slight apical enlargement the ap- 

 pendages are of subuniform thickness and possess 

 no teeth or spines. 



Inferior appendage longer than (i^J times as 

 long as) the superiors; in profile view a little con- 

 cave superiorly with a slight superior convexity 



at one-third length ; in ventral view its truncated 

 Fig. i. Superior abdo- 



minal appendages <j , apex is half as wide as its base, each of the two 

 apical angles terminating in a small upturned tooth. 



Genitalia of abdominal segment 2 : anterior lamina concave, con- 

 cealed in profile view by the sides of the segment ; hamule two-branch- 

 ed, posterior branch the larger, depressed, its apex rounded horizon- 

 tally, anterior branch more prominent, terminating in a slender hook 

 directed caudad, mesad and finally dorsad; genital lobe subequally 

 prominent with the posterior hamular brunch, a little narrower at its 



