402 CALIFORNIA ACADEMY OF SCIENCES. [Proc. 3D Ser. 



i 3 Tepic, Oct., 1894, Eisen and Vaslit. 

 1 3 " Nov., 1894, " " 



2$ 



40. Perithemis domitia Drury. 



Libellula domitia Drury, 111. Exot. Ent., Vol. II, 1773, PI. XLV, fig. 4. 

 Perithemis domitia Hagen, Syn. Neur. N. Am., 1861, p. 185; Kirbv, Trans. 



Zool. Soc. Lond., Vol. XII, 1889, p. 325; Ann. Mag. Nat. Hist., 6th Ser., 



Vol. IV, 1889, p. 232; Calvert, Trans. Am. Ent. Soc, Vol. XX, 1893, 



p. 264; Vol. XXV, 1898, p. 75. 

 Libellula tenera (?), L. tenuicincla ( 1 ) Say, Journ. Acad. Nat. Sci., Phila., 



Vol. VIII, 1839, p. 31. 



153 16 ? Tepic, Oct., 1894, Eisen and Vaslit. 

 4<3 7 ? " Nov., 1894, " " 



23 2? No locality or date, " " " 



21 $ 25 ? 



Of the species referred to Perithemis, domitia Drury, 

 from Jamaica, was the first described. Mr. Kirby 1 regards 

 domitia as specifically distinct from various forms of Peri- 

 themis found on the North American mainland; while other 

 authors, following Hagen, have united Say's tenera and 

 tenuicincta with domitia, and may, perhaps, be disposed to 

 do the same with intensa Kirby, and even with still other 

 nominal species. Since Mr. Kirby's work is of later date 

 than Hagen's, it may be well to examine the grounds on 

 which he has regarded them as distinct. 



1. Domitia he believes to recognize in specimens from 

 Jamaica in the Dublin Museum and from St. Domingo in 

 the British Museum. 2 From these two references it appears 

 that he regards as one important specific character that the 

 subtriangular space [or internal triangle] on the front wings 

 is divided by a perpendicular nervure into two cells, and he 



1 Cat. Odon., 1890, p. 10. 

 a 11. cc, 1889, pp. 232, 325. 



