NEUROPTERA. 371 
Black humeral stripe two-thirds as wide as or subequal in width to the pale antehumeral, forked above, 
where the humeral part is a mere line and the mesepimeral part does not quite reach to the front 
wing-base, An elongated black spot at the upper end only of the second lateral thoracic suture. 
Abdominal segment 2 blue or violet, each side with a superior black stripe as long as the segment 
converging posteriorly and uniting at the hind end; 3-7 black, with a pale, narrow, basal, transverse 
ring which is prolonged, as a mid-dorsal stripe on 3 or line on 4—6, to four-fifths of the length of each 
segment; inferior lateral margins of 3-7 pale, especially in the middle of each segment; 8-10 pale blue, 
without dark markings or, more often, with an inferior longitudinal black stripe for the apical third or 
half of 8 and the whole length of 9, and the ventral surface of 10 black. 
. Coloured as the g,, but no black on segment 10. 
3 @ (15 of each sex tabulated). Pterostigma of the front wings 68-8 3, °72 9 mm. long, surmounting one 
(66-7 °/o $ 2), less than one (33°3 °/, 3, 23°3 °/, 2), or more than one (10 °%/, 2) cell; of the hind 
wings *76—"88 ¢, °8—84 2 mm. long, surmounting one (63:3 °lo 3,733 %/o 9), less than one (36-7 °/, 3, 
16-7 °/, 2), or more than one (10 °/, 2) cell. 
Antenodal cells on the front wings 3 (100 °/, ¢ 9), on the hind wings 3 (100 lo 3, 967 Jo QP) or 2+ 
(33%) 2). 
Dimensions.—Abdomen, $ 24-27, 9 24:5-27; hind wing, ¢ 17°5-19-5, 2 185-20 mm. 
Hab. Costa Rica, Juan Vifias (L. Bruner & M. Cary, U. 8. N. M.: 37 3, 23 9 ). 
The specific name proposed may serve to commemorate the type locality. 
See the remark on the female of this species under A. frequentula, p. 366, anted. 
16 (c). Argia talamanea, sp. n. (Tab. VIII. figg. 34, 34s.) 
3. Rear of the head pale, blackish around the occipital foramen. Black mid-dorsal line no wider than the 
carina on which it lies, pale antehumeral stripe consequently very wide. Black humeral stripe about 
one-fifth as wide as the pale antehumeral, not forked above, a black stripe on the second lateral thoracic 
suture slightly wider than the humeral stripe. Segments 2 and 3 violaceous, a black stripe each side 
for three-fourths length of 2, entire length of 3, on which latter the stripes of the two sides unite at 
apex; 4-7 black with a narrow, transverse, basal, pale ring, interrupted dorsally ; 8-10 blue, with an 
inferior longitudinal black stripe each side. . . 
Pterostigma *8--9 mm. long, surmounting one cell or a little less; antenodal cells on all the wings 3. 
Posteubitals 14 (front), 12 (hind). 
Dimensions.—Abdomen 28°5, hind wing 20°5 mm, 
Hab. Costa Rica, Carrillo (Underwood: 1 3). 
The name proposed for this species is that of a tribe of Eastern Costa Rica. 
Argia cuprea (p. 84). 
Argia cuprea, Hagen, Bull. Mus. Comp. Zool. xxxix, t. 1. figg. 8, 8a (apps. 3) (1902) *. 
To the localities given, add:—Honpuras, San Pedro Sula (Williamson, coll. 
ejusd.: 1 2). 
Argia cupraurea (p. 85). 
3. A comparison of the better-preserved females from Surubres with those of the original description shows 
an omission and an error in the previous account :—(1) In a young female (San Esteban) abdominal 
segment 2 has an elliptical mid-dorsal spot followed by an ante-apical dot, 3-5 a mid-dorsal stripe, 
6-8 a mid-dorsal line, pale blue, for the greater part of the length of their respective segments; in the 
older females (Surubres) these mid-dorsal markings are narrowed to lines. (2) The mesepisternal 
tubercles are present. 
