Cincinnati Society of Natural History. 



4. Cases of heterogeneous copulation have been recorded 

 in previous numbers of the catalogue; the following may be 

 added : Lestes disjuncta % with Lestes vigilax 9 and Basics- 

 schna janata % with Tetragoneuria cynosura ? . 



5. Lestes forcipata was flying in abundance at Columbus, 

 April 24th. Lestes vigilax was exceedingly numerous from 

 June to August in the marshes of Sandusky bay. 



6. Anomalagrion hastatum has been observed this year as 

 follows : Columbus, from April 24th to September ; Wauseon, 

 June 20th to August 10th ; Sandusky, through July ; Georges- 

 ville, September 2d. It, therefore, occurs throughout the 

 State and is one of the earliest to appear, remaining until late. 



7. Gomphus externus Selys (G. consobrinus Walsh). Many 

 males and three females were taken along the Olentangy 

 River at Columbus in May and June. Its habits are similar to 

 those oi fraternus with which it usually flies. The female 

 has the occiput straight, not "rising in the middle in two con- 

 fluent curves" (Walsh), nor is "the space between the lateral 

 thoracic lines livid," but of the more usual greenish yellow 

 hue ; the vertical thorns are black and conical ; the posterior 

 femora are either with or without external vittse, in this 

 regard agreeing with the female oi fraternus. It has been 

 said that the latter has no vertical thorns, and that the females 

 of externus and fraternus may thus be separated ; this will not 

 do, for the female fraternus has long slender, black or yellow 

 vertical thorns; they are easily separated, however, by the 

 differences in the occiput — fraternus with a spine in the 

 middle of the border, externus having the same straight or 

 slightly concave — externus is larger and the vitta on 9 is 

 almost as conspicuous as in externus male. 



8. Dromogomphus spoliatus, hitherto rare, has this year, been 

 taken at Napoleon by Mr. Jas. S. Hine ; he found it abundant 

 along the Miami Canal. 



9. Mr. Hine captured one male of Macromia tamiolata at 

 Napoleon. 



10. Mr. E. B. Williams took Paiitala hymencea at Eoramie 

 Reservoir. 



11. Dip/ax corrupta was abundant through July and August 

 at Wanseon and Sandusky. It has been taken in numbers as 

 far east as Buffalo, N. Y., by Mr. E. V. Van Duzee. 



8 



