322 NEUROPTERA. 
1 ¢ with label “Z. ilota, H.,” in Selys’s hand; U.S. NV. M.: 1 3) (8 6], Tepic”, 
Guadalajara [1 3] (Schumann), Misantla (F. D. G.: 1 3), Orizaba (H. H. 8. & 
F. D. G.: 8 3), Vera Cruz", Guadalupe (Hay, U. S. N. M.: 13) [Tower: 2 3 ], 
Tlalnepantla [4 3], Mexico City [10 ¢, 2 9] (Barrett, colls. Adams, P. P. C.) 
(Schumann, H. H. Smith: 12 3, 3%) (Dr. G. O. Rogers, M. C. Z.: 1 3), Sierra 
de Ajusco [1 ¢], Chapultepec [1 ¢] (Hay, U. 8S. N. M.) [1 ¢], Contreras [1 ¢ ], 
Nepantla [1 3], Tlalpam [1 @], Cuernavaca [3 3, 2 2] (Barrett, colls. Adams, 
P. P. C.), Amecameca (coll. Deam: 1 3), Omilteme, 8000 ft. [1 ¢, 1 2 ], Xucuma- 
natlan 7000 ft. [1 ¢ ] and Amula 6000 ft. [19 ¢, 8 @]in Guerrero (H. H. Smith), 
Oaxaca! (coll. Deam: 2 3), Putla!!; CanrraL America, Santa Clara’; GUATEMALA 
(Salvin, coll. M‘Lachlan: 1 3; Van Patten, &c., UM. C0. Z.: 5 &, 3 2), Sepacuite 
(Maxon & Hay, U. S. N. M.: 1 3), Duetias (Champion: 6 ¢); Costa Rica, San José 
(Biolley: 1 9), San Francisco, 4500 ft. [2 ¢ ], Irazu, 6000-7000 ft. [1 ¢ | (Aogers). 
Taken in January (Amecameca, Sepacuite), May (San José in Costa Rica), June to 
December (Central Mexico). 
Intermediates between virgulum and gilvum. 
The Mexican specimens cited below have the yellow on the wings much reduced, extending from the bases 
out as far as, or a little farther than, the triangles, with a small yellow cloud at the nodus ; the blackish 
streaks in the subcostal space of the front wings and in the submedian space of the hind wings are still 
shorter than are stated for virgulum on page 321; the inferior appendage of the male is as in virgulum. 
Some of the examples from Amula, and some of the Guatemalan specimens in the ©. C. Z., cited above as 
virgulum might, almost equally well, be placed here. 
Among the material from Arequipa, Peru, most of which is giluwm, are four males which approach virgulum 
in that they have a blackish subcostal streak on the front wings reaching one-third to one-half-way to 
the first antecubital, a blackish subcostal streak on the hind wings reaching to the level of the arculus, 
but no submedian streak; the yellow on their wings is nearly as in the Mexican intermediates, the 
inferior appendage is as in giluum. 
Hab. Lower Cauirornta, Mesa Verde’, Sierra Laguna®.—Mexico, Guadalajara 
[ McClendon: 1 2], Eslava [1 9] and Contreras [1 ¢, 1 2] in Distrito Federal 
[ Barrett} (coll. P. P. C.).—Pzru, Arequipa (Gerhart, A. N. S.: 4 ¢). 
Taken in August (Guadalajara), October (Mesa Verde ?, Sierra Laguna, Contreras, 
Arequipa), and November (Eslava). 
fii. S. illotum gilvum. 
? Diplax illota, form gilva, Selys, 1. c. p. 44 (1884). 
Diplaz illota, Martin, Boll. Mus. Zool. ed Anat. Comp. Torino, xi. no. 240, p. 2 (1896) ™. 
Sympetrum gilvum, Kirby, Trans. Linn. Soc. Lond. (2), Zool. vill. pt. 2, p. 73 (1900) **. 
The dimensions of the material before me are as follows (in mm.) :— 
Colombia, Quito. Arequipa. Cordova. 
Abdomen, ¢ ........ 26-24 24-23 23-2] 22 
a Qe eeaees 25-24 21-5 22-20°5 
Hind wing, ¢........ 31°5-29 28 27-24 27 
” Ps re 32-31 28°'5 26°5-23'5 
