NEUROPTERA. 379 
episternum ; dorsum of 1-10 black, a narrow transverse apical blue ring on 1, a narrow transverse 
mid-dorsally-interrupted basal blue ring on 3-7, dorsum of 8 pruinose ; femora and proximal part of 
tibize black superiorly, pale yellow inferiorly, except near the knee-joint, where black is also present. 
In the oldest individuals present (¢), pruinosity has also appeared on the dorsum of 9 and 10, the pale brown 
of the mesepimeron has become a black stripe, which develops upward from the inferior spot of the 
preceding stage to the front wing-base, and there is a short black mark on the upper end of the humeral 
and of the second lateral thoracic sutures; the pale colours of the ventral surfaces of the body are green 
rather than yellow. a 
Abdominal segment 10 with a superior apical process, directed upward and backward, its apex bifid. 
Appendages similar to those of A. allopterum, but the “ sockets” of the superiors (cf. anted, p. 105) larger 
and the acute, downwardly-directed apex placed on the ventral side of each socke 7 
The “long” cell below the stigma of the hind wings is divided into a number of cells in about one-third of 
the wings examined. 
Q (hitherto undescribed). Youngest stage: generally pale brown, abdominal segments reddish, apices of 5-7 
obscure, articulations of 2-7 with a transverse black ring; a narrow transverse basal yellow ring soon 
appears on 3—7. A darkening of almost the whole dorsum of 6-8 is the next change. A gap occurs in 
the material at hand as far as the next stages are concerned, but as females are present whose colouring is 
almoat identical with that of males of stages d and e described above, presumably the females pass 
through similar changes; the dorsum of 8-10, however, is never so pruinose as in the males.: One 
female has a blackish stripe on the upper half of the metepisternum. 
Abdominal appendages shorter than 10, reaching slightly farther backward than do the tips of the palps of 
the genital valves. There is no long cell below the stigma of the hind wings. Pterostigmata and venation 
similar to those of A. allopterum 2, the stigmata smaller. 
Dimensions.—Abdomen, ¢ 25°5-27°5, Q 23-25°5 ; hind wing, ¢ 15:5-16°5, 9 15°5-17°5 mm. 
To the localities given, add :—GuATEMALA, Mazatenango [1 ¢ ], Santa Lucia [35 3 
21 9] (Wilmsn., coll. gusd.) (Hine, coll. 0. S. U.: 8 3,4 2). 
? 
Mr. Williamson’s note on this species is as follows: “Santa Lucia, Feb. 1, 1905. 
g. In shade, most active toward evening.” 
Anisagrion lais (p. 106). 
To the localities given, add :—Mexico, Guanajuato (A. Dugés, U. S. N. M.: 1 3), 
Xico (Calvert, coll. P. P. C.: 1 2) in Vera Cruz. 
ENALLAGMA (p. 107). 
§ II. of the Key, anted, p. 108, is to be modified as follows to receive an additional species :— 
§ II. Nodal sector arising most frequently nearest the fourth posteubital on 
the front wings, nearest the third on the hind. 
[Rear of head pale, pale postocular spots narrowly cuneiform, almost linear, 
connected with each other, a median pale spot on the middle prothoracic 
| lobe, mid-dorsal thoracic carina pale, black humeral stripe double, being 
divided lengthwise, no black line on second lateral thoracic suture ; 
dorsum of abd. seg. 2 of ¢ black for its entire length, dorsum of 9 of ? 
mostly blue with a pair of small basal black spots; postcubitals 6-8 (7) 
front, 5-6 (6) hind wings; ¢ apps. characteristic, see Tab. V. fig. 16 ; 
vulvar spine present. © 2 1. 6 ee ee eee wee tw. 8. basidens.] 
