ODONATA 385 



of 9 ; valvular processes rather short. The first segment of the ab- 

 domen has a sternal tubercle similar to that of the male. Supra- 

 triangular space without cross-veins, triangle 3-celled, internal triangle 

 i-celled; in front wings, 14-15 antecubitals (14 in left wing, 15 in 

 right), 1st and 5th thickest, 10 postcubitals ; in hind wings, 8-9 ante- 

 cubitals (9 in left wing, 8 in right), the ist and 5th thickest (ist and 

 6th in left wing), 11-13 postcubitals (13 in left wing, 1 1 in right). 



Length with appendages, $ 60 mm., $ 58; abdomen, $ 45, $ 44; 

 front wing, ^ 41, 9 42.5; hind wing, (? 40, 9 41; pterostigma of 

 front wings 3.8, of hind wings 3.4; superior appendages, ^ 4.7, 9 4. 



Type. — No. 5419, U. S. National Museum. One male and one 

 female, collected on Chatham Island, May 26 (Nos. 45 and 44). The 

 specimens were imperfectly dried and the colors, therefore, are obscured 

 so as to prevent their accurate description. 



This species is nearly related to y^schna cornigera Brauer and A. 

 califor7iica Calvert.^ 



3. AN AX sp. 



One female, Chatham Island, May 26 (No. 40). This may possi- 

 bly prove to be A. amazili oi Burmeister. It agrees well with the 

 description of this species in Hagen's Synopsis of the Neuroptera of 

 North America, except that in this specimen there is no triangular 

 blue spot on the superior surface of f rons on each side of the triangular 

 black median spot. The appendages are 5 mm. in length, elliptic- 

 ovate, flat, with a low median carina above. 



Family LIBELLULID^. 



4. PANTALA FLAVESCENS (Fabricius). 



Libellula flavescens Fabricius, Ent. Syst. Suppl., p. 285, 1798. 



Pantala flavescens Hagen, Syn, Naur. N. Am., p. 142, 1861. — Kirbv 



Synonymic Cat., p. I, 1890. — Calvert, Trans. Am. Ent. Sec, xx, p. 



254, 1893. — Kellicott, Bull. Ohio State Uni. (4), No. 5, p. 93, March, 



1899. — Williamson, 24th Ann. Rep. Dept. Geol. and Natural Resources, 



Ind., 1899, Blatchley, p. 315, 1900. 



Two females, Charles Island, May 10 and 20 (Nos. 42 and 43). 



DistributioTi. — This species is nearly cosmopolitan, being found in 

 the tropical portions of both hemispheres, and in the United States as 

 far north, occasionally, as New Hampshire and Wisconsin. 



5. PANTALA HYMEN^A (Say). 



Libellula hymencea Say, Journ. Ac. Phila., viii, p. 18, 1839. 



Pantala hytnencBa Hagen, Syn. Neur. N. Am., p. 142, 1861. — Kirbv, Syn- 



iProc. Cal. Acad. Sci. (2), iv, pp. 505-508, pi. xv, figs. 19, 20, 23, 24, 31 and 

 32, Feb. 19, 1895. 



