284 NEUROPTERA. 
abdomen shorter than the hind wing. Mr. Henshaw writes me that the type has 4 rows between A, and 
the anal angle of hind wings, decreasing to 3 basally and posteriorly. 
Considering the form of the genital hamule of the male to be the principal specific differential from rapa, 
I have here included examples showing much colour-variation. 
a. The pale spot on each side of the dorsum of abdominal segment 7 about half as wide as that side, as in 
the type’. 
The Cuernavaca examples have the metallic blue on the frons stopping short of the inferior margin by a 
distance equal to 4-2 of the height of the vertex, and not extending on to the lateral surfaces ; labrum 
yellow (its free margin narrowly black, 3); lateral labial lobes yellow (their inner margin narrowly 
black, ¢). Abdomen, ¢ 36-88, 2 39; hind wing, ¢ 40-42, 9 43 mm. Front wing: ante- 13-15, 
postcubitals 8-10. Hind wing: ante- 9-10, postcubitals 9-12. 
The two females from Atoyac have the labrum almost or entirely black, inner half of lateral Jabial lobes 
black ; one is apparently immature, but has the frons superiorly and laterally ill-defined metallic blue; the 
other, older, has the frons superiorly luteous, inferiorly reddish-brown. Abdomen 35, hind wing 37 mm, 
. Front wing: 13-14 ante-, 7-8 postcubitals. Hind wing: 9-10 ante-, 9 postcubitals. 
The Guatemalan specimens have the metallic blue of the frons stopping short of the inferior margin by a 
distance equal to 4 of the height of the vertex and reaching also on to the lateral surfaces ; labrum 
black with a small yellow spot at base (except in one from S. Gerdnimo the labrum is yellow with the 
middle of the free margin black); lateral labial lobes varying from yellow with the inner posterior fourth 
black, to almost entirely black with a small pale spot on the outer margin. Abdomen, ¢ 36-38, 2 38; 
hind wing, ¢ 39-40, 9 88 mm. Front wing: 13-16 ante-, 8-10 postcubitals. Hind wing: 9-11 
ante-, 10-12 postcubitals. 
No female of this species has hitherto been described. That from Cuernavaca has the vulvar lamina reaching 
not quite to the apex of the lateral margins of 8, bilobed, the two lobes diverging at 90°, the interval 
between them wider than deep, each lobe about -25 mm. long, rounded. The vulvar lamina of the 
S. Gerdnimo female agrees in as far as it has not been damaged. 
Three hind wings of all the present material (both sides of 1 ¢ S. Gerdénimo, one side Purula 3) have a single 
cell reaching from short sector to first sector of the triangle, followed by two rows; all others have two 
post-triangular rows beginning immediately at the triangle. 
Hab. Mexico1?, Atoyac (Schumann: 2 9), Cuernavaca (coll. Deam: 5 6,192); 
GuATEMALA, Purula [1 ¢ |, San Gerdénimo [12 3,1 2 ] (Champion). 
The Cuernavaca examples were taken in July. 
b. The pale spot on each side of the dorsum of abdominal segment 7 as wide as that side, in this respect: 
resembling the Central-American representatives of rapax. 
The material at hand is like the Guatemalan specimens noted above under a in the colouring of frons, labrum, 
and labial lobes. There is but one row of cells between the subnodal sector and the supplementary sector 
7th segment is entirely orange-yellow, except a very narrow apical line. This exists in the Selys Collection 
from Panama, in René Martin’s from Chiriqui, then I have seen it from Honduras, and one of the old salleei 
types, a female, is of this species. Evidently the description has been taken from both.” 
Combining the information contained in this passage with the original description, I think that the salle 
type im which “the 7th segment is entirely orange-yellow,” &c., is probably of that form of pertinax marked b 
in the text above, but whether the other sallax type, ‘‘a form of pracowx,” is strictly precox as I have 
recognized it on pages 279, 281, or belongs to the “ Intermediates between precow and mendax” of page 282, 
supra, can only be decided by a renewed study of the salle type. 
A feature of sallwi which de Selys believed to be important and diagnostic, “ triangle discoidal des ailes 
supérieures ..... suivi immédiatement de trois cellules, puis de deux rangs”*, is found symmetrically in 
one, asymmetrically in four, of the seventeen specimens which I refer to pertinaxz 6. Therefore I cannot regard 
this feature as having the value which he ascribed to it. 
