no. 2089. NOTES ON NEOTROPICAL DRAGON FLIES— WILLIAMSON. 627 



completely shade the stream. It was among these bushes that E. 

 lamina and E. fuscaenea moved with drifting flight from near the 

 water's surface to rest in the dense vegetation. 



When this study was first begun, lamina and incusa were con- 

 fused as one species. A male of one of these (I believe certainly 

 lamina) and a male of fuscaenea were sent to Monsieur Severin for 

 comparison with Selys's material. At the same time a male of P. 

 aurantiaca was included, and this is discussed under that species. 

 In my letter with the material to Monsieur Severin I asked him par- 

 ticularly to compare the South American specimens with humeralis, 

 tenuis, and capilliformis. Through Monsieur Severin' s kind offices 

 this material was studied by both Grunberg and Ris. Doctor Griin- 

 berg thought the 2 specimens I sent were the same species, very near 

 to capilliformis but differing in the appendages, and certainly different 

 from both humeralis and tenuis. When Doctor Ris studied the speci- 

 mens the end of the abdomen of one (lamina) had been lost. Of 

 fuscaenea he says: "The appendages are very different from those of 

 capilliformis type." Since Doctor Grunberg failed to separate lamina 

 and fuscaenea by the appendages (though they are really different), 

 it is fair to infer that the appendages of capilliformis are clearly 

 different from both lamina and fuscaenea. Of tenuis in the Selys 

 collection Doctor Ris says, "It is a very miserable teneral male speci- 

 men resembling lamina and fuscaenea in shape and dimensions. I 

 can not without a misroscope be sure of the appendages in their bad 

 condition." Of P. humeralis, "The female looks quite different, is a 

 good deal larger and can not possibly be the female of lamina or 

 fuscaenea. 11 In a later communication he says, "Regarding your 

 Protoneuras, seen by me at Bruxelles, I think you may quite safely 

 describe them as new." 



EPIPLEONEURA INCUSA, new species. 



Length of abdomen, male 28.5-30 mm.; hind wing, male 17-18. 



Head. — Male. Black above with green reflections; labium and a 

 narrow lower border on labrum pale flesh; anteclypeus and genae 

 pale green. 



Prothorax. — Male. Dark shining green or black above and on sides; 

 pale flesh below; hind lobe low, convex. 



Thorax. — Male. Above dark shining green, covering the mese- 

 pisternum and mesepimeron, somewhat duller on the latter, and with 

 a narrow brown humeral line; metepisternum brown above the 

 stigma, darker on the sutures and above, the latter with some green 

 reflections; metepimeron brown above opposite the green area of the 

 metepisternum; below these colored areas and beneath, pale flesh. 



Abdomen. — Male. Above black, the basal segments with green 

 reflections; obscure narrow brown basal rings on 4-7; apical articu- 

 lations on 7, and to a lesser extent on 8, dull yellowish brown; sides 

 black, brown on the extreme lower edge and shading into the dull 



