268 NEUROPTERA. 
Diplacodes minuscula, Kirby, Trans. Zool. Soc. Lond. xii. p. 308 (1889) *; Aun. & Mag. Nat. Hist. 
(7) iii. p. 868 (1899)°; Blatchley, A Nature Wooing, &c. p. 215 (1902) ". 
Trithemis minuscula, Castle & Laurent, Ent. News, vii. p. 302 (1896) °; Ris, Mitth. schweiz. ent. 
Ges. x. p. 440 (1902)°; Needham, Proc. U.S. Nat. Mus. p. 709, t. 41. fig. 10 (nymph), 
t. 44. fig. 2 (venation) (1904) ». 
Sympetrum minusculum, Williamson, 24th Ann. Rep. Geol. Indiana, p. 825 (1900) ”. 
Dimensions :—Abdomen, ¢ 13°5-17, 2 125-165; hind wing, d 155-21, 9 16-20; costal edge of stigma, 
front wing, 2-2°5 mm. 
Hab. Norra Americal, Kentucky2, Georgia?4, Florida??7!0 (colls. Adams, 
A. N.S, P.P.¢.: 108,52), Auburn (Baker, coll. P. P.C.: 1 ¢) in Alabama.— 
Panama, La Chorrera (Dolby-Tyler®).—Brazu?, Amazon®, Chapada [27 ¢, 14 2], 
Corumba [1 3], Cuyaba [3 ¢, 6 9], Cachoeira [6 3, 8 2], Piedra Blanca [3 ¢, 
1 2], Lagoa [spmns.], Rio Grande do Sul [1 3] (4. H. Smith, Carn. Mus. Pittsb.) ; 
ARGENTINA, Corrientes? (Perren, coll. P. P. C., ex coll. McLach.: 1 6); West Inpigs, 
Havana, Cuba (Milwaukee Publ. Mus.: 1 3). 
8. Erythrodiplax berenice. 
This species, including at least two subspecies in the sense of the code of the American Ornithologists’ 
Union *, shows an interesting variation from north to south in the denseness of reticulation of the wings, 
especially along their hind margins. The denseness is greatest in the northern examples, as may be seen 
from the following figures taken from the left wings only, except in one instance (R) :— 
Number of marginal cells between 
h Width at 
Locality and Sex. Short sector Lengtt nodus 
Stigma and nodal Subnod al and first ; in mm. 
sector. ang meciaD! sector of 
sectors. triangle. 
Fore wing. |Hind wing.| F. w.|H. w. |F. w. |H.w. |F. w. Hw. /F. w. |H.w 
1. Folsom, Pennsylvania. ¢ .......... 30 35 23 | 28 | 7 | 15 | 25:5) 24 | 6-5] 8 
2. Anglesea, New Jersey. @ .......... 36 33 22 | 27 | 10 | 16 | 27 |26 | 6-5) 8 
3. (Corpus Christi?), Texas. g ........ 35 29 24; 29 | 8 | 16 |26 | 24:5) 6-3) 8 
4. ” ” .° QD se eeeeae 30 30 21 | 23); 7) 14/26 (25 |6 | 8 
5, Altamira, Tamp., Mex. 9 .......... 27 28 22 | 23, 7/14 |29°528 | 7 | 95 
6. Acapulco, Mex. G ...... eee ee eee 23 22 21 | 23| 6 | 11 | 26-525 | 65) 8 
7. Salina Cruz, Mex. ¢ ......-......-. 29 28 24 | 26 6 | 14 |29 | 27 | 65) 88 
8. » ri 23(R); 26 21 | 24) 5 | 14 |29 | 27-5) 6-7; 9 
9, San José, Guat. gd ........ eee eae 20 21 19 | 19 |) 7 | 18 |28 |27 | 65] 85 
10. ” rs i 21 19 16 | 20 | 7) 12 |285:27 | 6 | 8 
11. Colon, Pan. J... cece eee eee 18 19 18 | 19 6 | 11 | 24:5) 23 | 5:5| 7 
12. ,, a 21 19 18 | 20 5 | 12 |26 | 24-5) 55] 7 
13. Charlotte Harbour, Fla. ¢ .......... 25 24 20 | 24) 6 | 14 | 25:5, 24 | 6 | 7:5 
14. Miami, Fla. 9.0... ... eee eee eee 24 21 18 | 18 | 6 | 10 | 24-5) 23:5) 5:5) 7 
15. Cuba (Wright), GO ...... 0... ee eee 16 14 17 | 17) 6 | 10 | 25 | 23-5} 5:5) 7 
16. Kingston, Jam. Q@ ............06.. 17 18 17; 18} 5 | 8 | 24:5) 23:5) 5°5| 7 
* Code of Nomenclature, 1892, page 31. 
