1 89 1.] ENTOMOLOGICAL NEWS. 75 



36. Diplax rubicundula Sdiy. — Orono. Very common. Some- 

 times fifty in sight at one time over small bogs and creeks in 

 meadows. The males were repeatedly seen supporting the fe- 

 males while they were depositing eggs. The female clasped the 

 male about the middle of the abdomen with her feet, the end of 

 her abdomen hanging over behind. The two flew over the water, 

 occasionally lowering quickly until the end of the female abdomen 

 touched the water when the eggs were probably deposited. We 

 noticed this species feed upon the young of Diplax vidua Hag. 

 This is the most common species here from July to October; 

 quite abundant over grain fields in dry places. One $ laid 67 

 spherical white eggs .02 inches diam. after being caught; eggs 

 laid rapidly and were dry. 



37. Diplax vicina Hag. — Orono; quite common about low 

 meadows and small creeks. September. 



38. Diplax semicinda Say. — Orono; common over meadows 

 and grain fields with D. rubicundtda July to October. 



REMARKS. 



The specimens in the college collection are all marked ' ' Orono," 

 but are without date of collection, habitat, or collector. We 

 presume they were collected by Prof. C. H. Fernald, formerly of 

 the Maine State College. The authority for the determinations 

 is not known, but the writer has compared the specimens with 

 the descriptions, and in most instances, is satisfied that they are 

 correctly named. The specimens of Alschia depsydra and ere- 

 mita in the college collection have defective abdominal appen- 

 dages. As it is upon the structure of these that the above species 

 are separated, the writer is unable to tell whether the specimens 

 are correctly named. From the general characters it is certain 

 that the specimens belong to one or both of the above species, 

 and, as they are separated in the collection, both may be included 

 in the list provisionally, awaiting the taking of fresh material. 

 We are under great obligations to Miss Mattie Wadsworth, Man- 

 chester, Me., for the loan of specimens for comparison, and to 

 Mr. P. P. Calvert, Philadelphia, Pa., for identifying some of the 

 troublesome species. The list does not represent all the Odonata 

 found here, as several species were seen that were not taken, and 

 no great pains have been taken to collect exhaustively. 



