1 894-] 



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. 

 Acroneurta sp., i $. — 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 c? ^^"^ slender, 

 narrowed at the tip and sharp 

 pointed. 



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

 — The (^ appendages are much 

 broader and more blunt than in 

 lurida. 



Perla ephyre Newm., i $, i (f*? — 

 The c? may be another species. 



Capnia sp., i specimen. 



EPHEMERIDiE. 



Polyniitarcys 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. 



Siphlurus sp., 2 specimens. 

 Siphlurus aridtis Walk. ? — A sub- 

 imago, perhaps this species. 

 Heptagenia pulchella Walsh, 2 sp. 

 Heptagenia sp., i specimen. 

 Ccenis diminuta Walk., 3 specimens 



ODONATA. 



Calopteryx niaculata Beau v., i $. 



Hetcerina americana Fab., i (J'. 



Hetcerina basalis Hag., i (^ . 



Lestes forcipata Ramb., i 9. 



Argia apicalis Say, 2 9 > i c?- 



Ischnura verticalis Say, 4 spec. 



Enallagma civile Hag., i c?. — 

 Manitou Park, Col. 



Enallagma prcevara Hag., i (^. 



Enallagma signata Hag., i (J*. 



Enallagtna sp., i 9- — Thorax vil- 

 lous, moderately large, prothorax 

 with a pale spot each side, post- 

 ocular spots confluent, abdomen 

 as in E. signala, 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 designatiis Selys, 

 •I J'- 



Cphiogoniphus severus Hag., i 9- 



—Manitou Park, Col. 

 Gontphus externalis Selys, i (^. 

 Gotnphus amnicola Walsh, i (^. 

 Anax Junius Drury, i 9 • 

 Macromia tceniolata Ramb., i ,^. 

 Epitheca obsoleta Say, i 9 • 

 Pantala hymencea Say, i cJ*, 2 9 • 

 Perithemis domitia Drury, i (J*, 2 9 • 

 Libellula trimaculata DeGeer, i 9 • 

 Libellula basalis Say, i cf . 

 Mesothemis simplicicollis Say, 3 f^. 

 3Iesothemis lotigipennis^urm., i 9. 

 Diplax rubicunda Say, i 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. 

 Diplax corrupta Hag., i (^, i 9- 



