90 NEUROPTERA. 
Hab. Mexico (U. S. N. M.: 1 2), Diente near Monterey in Nuevo Leon [ls], 
Acambaro [1 ¢ ], Texolo [5 3 ] (Rhoads), Huatusco (coll. Adams: 13), Tepic (Hisen & 
Vaslit, coll. Calif. Ac. Sci.: 3.6; Schumann: 1 9 ), Sierra Madre, Tepic (Richardson : 
1 ¢ ), Guadalajara (Schumann: 4 3,1 2), Jalapa (Trujillo: 1 3,129; coll, Adams : 
1 3), Chavarillo (Barrett, coll. P. P.C.: 4 3), Atoyac (H. Hf. Smith: 5 3,2 2), San 
Lorenzo near Cordova (Trujillo: 2 3), and Orizaba (Godman & H. H. Smith: 1, 
1 2) in Vera Cruz, Cuernavaca (Barrett, coll. P. P.C.: 4 3 ), Putla (coll. P. P.C., 
ex coll. Selys: 1 3), Chilpancingo [4 3], Tepetlapa (2 ¢ ], Rincon [1 ¢ ], and Tierra 
Colorada [1 ¢ ] in Guerrero (H. H. Smith), Oaxaca (coll. Deam: 6 2); HOonpuras, 
Rio Sarstoon (Blancaneaur: 1 ¢); Guatemata (coll, Adams: 1 ¢ ), San Gerénimo | 
[1 ¢,1 2], Guatemala city [1 ¢], Duefias (2 ¢], and Zapote [1 ¢ |] (Champion) ; 
Costa Rica, Caché (Rogers: 1 g, 2 9) —ConomBia, Bogota ’. 
‘The dates of capture of the various specimens, where labelled, range from March to 
December. 
26. Argia deami, sp.n. (Tab. IV. figg. 13, 52, 62.) 
3. Rear of head pale. Pale (blue) antchumeral stripe equal in width to the black mid-dorsal. Humeral 
stripe not forked, its lower half twice as wide as its upper halt and one-third as wide as the pale ante- 
humeral. Segment 2 blue, each side with a small, black, anteapical spot ; 3-7 blue, each side with a 
black spot in the apical fourth (3) to half (7), uniting on the mid-dorsum on 4-6; 8 and 9 blue, 
unmarked. 
9. Differs from the male as follows :—Pale brown replacing the blue of the male. Mid-dorsal, thoracic, and 
humeral stripes reduced to narrower stripes or lines. 
$ 2. Pterostigma of the front wings ‘8-9 mm. long, surmounting more than one cell (75 lo 5,100 %/, 2) 
or one (25 9/, ¢ *); of the hind wings 1 mm. long, surmounting more than one cell (75 °/, 3, 90 °/, 2) 
or one cell (25 9/, 5, 10 °/, 2). 
Antenodal cells on the front wings 4 (50 °/, 3, 91°6 9/5 2) or 5 (50 %/, b, 83 °/o Q); on the hind wings 4 
(100 °/, 3b, 33°3 %/o 2), 3 (583 °/, 2), or 3+ (83 “/o P ). 
Dimensions.—Abdomen, ¢ ¢, 29; hind wing, ¢ 22, 9 25 mm. 
Hab. Mexico, Dublan in Hidalgo (Barrett, coll. Adams: 2 3,2 @), Oaxaca (coll. 
Deam: 4 2). 
This species, named after Mr. C. C. Deam, of Bluffton, Indiana, who has collected: 
many Odonata in Mexico and has kindly lent me his collection, through the good 
offices of Mr. Williamson, is closely related to A. fissa and to A. tarascana, differing 
chiefly in the form of the appendages of the male and in that of the mesostigmal 
lamine of the female. 
27. Argia tarascana, sp.n. (Tab. IV. figg. 14, 51, 51s, 51 ss.) 
3g. Rear of the head pale, black near the occipital foramen. Pale (blue) antehumeral stripe two-thirds to 
equally as wide as the black mid-dorsal. Humeral stripe at its middle one-fourth as wide as the pale 
antehumeral, not forked above in the majority (665 °/,) of individuals, Segment 2 blue, each side with 
* Note, however, the small number of individuals. 
