ERYTHRODIPLAX.—D YTHEMIS. 271 
in 10 wings, 3-celled in 62 wings, asymmetrical in 3 g (Colon 2, S. José 1), 5 @ (San José 2, Colon 2, 
Cuba 1). Number of individuals examined 12 ¢, 24 9. 
Hind wing: not infrequently only one post-triangular cell reaches from short sector to first sector of triangle, 
and is followed by two rows. 
form I (homeochromatic). To this I refer Hagen’s type and a specimen from Biscayne, Florida, which I 
examined some years ago and of which I made the following notes (at that time I identified it as 
berenice):—“ Head and thorax coloured as in ¢ (frons and vertex dark metallic-blue, nasus greenish- 
yellow, rhinarium and labrum black, median labial lobe and inner half of each lateral labial lobe black) ; 
abdomen coloured as usual, but 10th segment black. Wings uncoloured. Abdomen 22, hind wing 
25 mm.” 
2 form IT (heterochromatic). I refer all the females before me to this form. Those from Colon vary in the 
colouring of the head: three have the vertex wholly metallic-blue, the yellow anterior frontal band 
greatly reduced, and the labrum black or black with two yellow spots; one has the anterior frontal band 
greatly reduced, the labrum black with two yellow spots; one has the yellow anterior frontal band greatly 
reduced: otherwise they agree with the statement on page 269 for form 6 II. One female from Crooked 
Island has pruinosity on thorax and base of abdomen concealing the yellow, but not the black stripes, of 
the former. A Cuban female is similar, but not quite so far advanced. 
Dimensions (in millim.).— 
San José, Guat. | Colon, Panama. Bahamas. Cuba. 
Abdomen, ¢ ...... eee eee ee eee ee 21°5-24 20-21 21 19-21°5 
3 D cece cece cc eee ener eeeeee 22-23 20-22 19°5-22 19-21 
Hind wing, 5 .... eee cece eee ees 24:5-27 23-24°5 22 22-245 
” 99 QD cece cece cette ee eens 25-27 23°5-26°5 23°5-26 23°5-24'5 
Costal edge of stigma, front wing ...... 2°8-3 2°5-2°8 2°5-2'8 2-2:5 
Nos. 9-16 of the table on page 268 illustrate the relative coarseness of reticulation in this subspecies. 
Hab. Unirep States, Charlotte Harbour [coll. P. P. C.: 1 3], Biscayne Bay [vide 
supra| (Mrs. A. T. Slosson), Chokoloskee [ Kinney: 1¢ ], and Miami [Laurent: 1 ¢ ] 
(A. N. 8.) in Florida—Guatemata, San José (Maron & Hay, U. S. N. M.: 2 9; 
Williamson, coll. ejusd.: 2 2; Hine, O.S.U.: 26,1 2); Panama, Colon (Howland, 
coll. Needham: 4 3,5 2 ).—Banamas 3, Nassau, New Providence (Maynard, M. C. Z.: 
1 ¢ ), Governor’s Harbour, Eleuthera [1 9], Crooked Island [4 2 | (Moore & Bullock, 
Univ. of Pa. Exped.); Wust Inpius, Cardenas? in Cuba! (Poey, Wright, M. C. Z.: 
43,7 2), Kingston in Jamaica (4. ¥. S.: 1 9). 
Taken in February (San José), March (id., Miami), June (Nassau), July (Colon), 
August (Cardenas?), September (id.?), and November (Eleuthera, Crooked I.). 
As is evident from the table on page 268, the Floridan and Acapulco examples 
connect the reticulation of typical neva with that of berenice type. 
DYTHEMIS. 
Dythemis, Hagen, Syn. Neur. N. Amer. p. 162 (1861); Brauer, Verh. zool.-bot. Ges. Wien, xviii. 
pp. 368, 733 (1868) ; Kirby, Trans. Zool. Soc. Lond. xu. pp. 264, 298 (1889) ; Cat. Odon. 
p- 84 (1890) ; Calvert, Proc. Calif. Acad. Sci. (2) iv. p. 522 (1895); Proe. Bast. Soc. Nat. 
Hist. xxviii. pp. 801-5, 308-9 (1898). 
A Tropical-American genus. 
In2 
