1 8 9 4-] 



ENTOMOLOGICAL NEWS. 



179 



sides slightly concave; the knees 

 are black; the venter orange in 

 the middle; veins of wings some- 

 what clouded, especially near 

 base; the ninth ventral segment 

 black, except tip, which is yel- 

 lowish, deeply notched ; the ap- 

 pendages of the last dorsal seg- 

 ment are brown and their superior 

 margins slightly concave. Length 

 27 mm. 



Acroneuria sp., i 9- Estes Park, 

 Col. Probably a form of the 

 common abnormis. 



Pseudoperla occipitalis Pict., i 9- 

 Perla lurida Hag., 2 $, i $. The 



appendages of the last dorsal 



segment of the $ are slender, 



narrowed at the tip and sharp 



pointed. 



Perla zanthenes Newm., i $, i $. 

 -The (^ appendages are much 



broader and more blunt than in 



lurida. 

 Perla ephyre Newm., i 9, i c? ? 



The (^ may be another species. 

 Capnia sp., i specimen. 



EPHEMERIDJE. 



Poly in itarcys albus Say ? One sub- 

 imago, probably this species. 



Hexagenia bilineata Say, 3 spec. 



Hexagenia venusta Eat., 2 spec. 



Pentagenia ^-punctata Walsh, i 

 subimago. 



Leptophlebia sp., 2 specimens. 



Siphlnnts sp., 2 specimens. 

 Siphlurus aridus Walk. ? A sub- 

 imago, perhaps this species. 

 Heptagenia pule he Ha Walsh, 2 sp. 

 Heptagenia sp., i specimen. 

 Ccenisdiuiinuta Walk., 3 specimens 



ODONATA. 



Calopteryx maculata Beauv., i 9- 



Hetczrina americana Fab., i (J 1 . 



Hetfsrina basalis Hag., i (J. 



Lestes forcipata Ramb., i 9- 



Argia apicalis Say, 2 9 > I c?- 



Ischnura verticalis Say, 4 spec. 



Enallagma civile Hag., i cT-~~ 

 Manitou Park, Col. 



Enallagma prcevara Hag., i $. 



Enallagma signata Hag., i $. 



Enallagma sp., i 9- Thorax vil- 

 lous, moderately large, prothorax 

 with a pale spot each side, post- 

 ocular spots confluent, abdomen 

 as in E. siguata, but a small me. 

 dian black spot on segment 10, 

 it is also a little shorter than in 

 that species, pterostigma very 

 short, almost white,' as are also 

 the costal veins. 



Herpetogomphus dcsignatus Selys, 



id 1 - 



Cphiogomphus sever us Hag., i 9- 



Manitou Park, Col. 

 Gomphns externalis Selys, i tf. 

 Gomphus ainnicola Walsh, i $. 

 Anax junius Drury, i 9 

 Macromia ttsniolata Ramb., i $. 

 Epitheca obsoleta Say, i 9 

 Pant a la hymcncea Say, i cf , 2 9 . 

 Perithemis domitia Drury, i ^, 2 9 . 

 Libellula triinacnlata DeGeer, i 9 

 Libellula basalis Say, i $. 

 Mesotheviis siniplicicollis Say, 3 ^. 

 Mesothemis longipennis'Rurm., i 9- 

 Dip/ax riibiciinda Say, : 9 

 Diplax costifera Hag., i 9- 

 Diplax decisa Hag., i 9- Agrees 



with Hagen's description, except 



that the wings are flavescent to 



the nodus. 



corrupta Hag., i $, i 9. 



