yo ENTOMOLOGICAL NEWS. [March, '02 



Allegheny River, Alleghany County, August 9 and September 

 12, 1898; Silver Lake, August 18 and 27, 1898; Alleghany 

 County, May, June and July (J. L. Graf and D. A. Atkinson ) ; 

 Beaver county, May 25, 1899; Idlewild, May 30, 1899, and 

 July 10, 1900 (D. A. Atkinson) ; Couneaut Lake, August 6, 

 1899 (D. A. Atkinson) ; Ohio Pyle, June 18, 1899. 



24. Anomalagrion liastatum Say. 



Turtle Swamp, July 31, 1898, and May 3, 1899; Schenley 

 Park, September 2, 1898; Pine Creek, May 21, 1899; Alle- 

 ghany County, July, 1899 ( D - A - Atkinson) ; Idlewild, 

 May 30, 1899 ; Couneaut Lake, August 6, 1899(0. A. Atkin- 

 son). 



25. Ophiogomphus rupinsulensis Walsh. 



Ohio River, Alleghany County, May 14, 1899. A single 

 teneral male. 



26. Ophiogomphus johannus Needham. 



Rockwood, June 29, 1900 ; one male. The specimen was 

 referred to Professor Needham, who has identified it as his 

 species johan nus. It is clearly distinct from Ophiogomphus caro- 

 limis Hagen, as figured by Needham (Can. Ent. xxxi, 9), by 

 the form of the superior abdominal appendages seen from 

 above, but seemed to differ from johannus in the form of the 

 inferior appendage and slightly in the genital hamules. 

 (See Plate III, figs. 3-5). Moreover, the humeral and ante- 

 humeral stripes are separated and not largely joined as de- 

 scribed for johanmis. Professor Needham writes that since 

 the species was described he has examined a number of both 

 sexes, and that the distinctness of the humeral and ante- 

 humeral stripes is a variable character, though the Pennsyl- 

 vania specimen has them more widely separated man any other 

 specimen he has seen. Moreover, the form of the inferior ab- 

 dominal appendage has not been accurately described and 

 figured, as the original material was a single teneral male with 

 this part badly shrunken. The inferior appendages in O. jolian- 

 niis and O carolinus are very similar. Professor Needham says 

 also that the accessory genital organs of the second abdominal 



