CANNAPHILA. 241 
Tab. VIII. (made from No, 21 of the above Table), with Prof. Carpenter’s figure of Misagria funerea 
quoted below. In the narrow-based hind wing the triangle is nearer the base, irrespective of wing-length, 
the origin of the distal subbasal sector is affected as stated in the synopsis suprdé, the number of cells in the 
anal area (but not the number of rows) is reduced, and the anal loop is smaller, as compared with the broad- 
based wing. To illustrate the differences in number of cells, I have given in the above Table the numbers 
of cells found on the “sole” of the “foot” of the anal loop, to use Prof. Needham’s apt terms. As might 
be expected from the variation in the width of the hind wing, there is also a variation in the number of 
cells in the anal area, with the exception of the number of postcostal cells between the origin of the distal 
subbasal sector and the hind angle of the triangle. I have not seen any cases of asymmetry in this feature, 
and it is hardly possible to have any other intermediate conditions between one and two cells. The number 
of these postcostal cells is, therefore, the most constant character I have been able to find. 
A Venezuelan female of vibex has a very small rudiment of a pale antehumeral stripe in the form of a spot 
at about mid-height. 
Finally, the differences in the male structural characters, given on p, 239, likewise appear to grade one 
into the other. 
As a result of this discussion, and for the sake of exhibiting the geographical distribution of the variations, 
it seems best to list the material studied as follows :— 
1. Cannaphila angustipennis. 
a. Typical angustipennis with entirely yellow labium, 
Libellula angustipennis, Rambur, Névr. p. 63 (1842) *; Selys, in Sagra’s Hist. Cuba, Ins. p. 446 
(1857) °; Hagen, Syn. Neur. N. Amer. p. 159 (1861)°; Proc. Bost. Soc. Nat. Hist. xi. 
p. 292 (1867) *; xv. p. 374 (1873) °; Scudder, op. cit. x. p. 192 (1866) °. 
Leptetirum angustipennis, Kirby, Cat. Odon. p. 26 (1890) *. 
Cannaphila angustipennis, Karsch, Berl. ent. Zeitschr. xxxiii. p. 880 (1890) °. 
(?) Misagria funerea, Carpenter, Proc. Roy. Dublin Soc. (n.s.) vili. pt. 5, p. 434, t. 16. figg. 5-9 
(venation, details g) (1897). 
Extreme widths of the hind wing are represented by Nos. 1 and 10 of the Table on p. 240. 
While the wings are usually tipped with brown for a width of 2-3 cells, in one Teapa, the Teleman, and 
San Pedro females the brown reaches in to the middle of the pterostigma, but not so far on the hind 
margin. The three males from Nicaragua have no brown at the wing-tips; one of them has pale brown 
at the base extending out to the arculus on the hind wing, not quite so far on the front pair; the other 
two have traces of brown at the base only. Prof. Carpenter mentions a similar condition in his type. 
Young examples have abdominal segments 1-7 yellowish-red, 5-7 margined each side with blackish, 
which expands posteriorly on each segment to meet its fellow of the opposite side; hitherto-published 
descriptions refer to older individuals. 
Dimensions.—Abdomen, ¢ 25-30, 9 26-29°5; hind wing, g 30-33, 9 29-36°'5 mm. 
Hab. Mexico, Guadalajara (Schumann: 1 ¢ ), Frontera (coll. Westcott: 1 3,4 2) 
and Teapa (H. H. Smith: 1 ¢, 1 2) in Tabasco; Guatemata, Teleman in Vera Paz 
(Champion: 1 2), Gualan [2 ¢ |, Santa Lucia [1 ¢ ]; Honpuras, San Pedro Sula 
[1 2] (Deam, Williamson, coll. Wilmsn.) ; Nicaragua (Dublin Mus.°) (U.S. N. M.: 
3.6); Panama [A. Agassiz: 1 2,1 ¢ J, Chiriqui [ex Staudinger: 1 3,1 29](MC.Z) 
(1 ¢], Bugaba (Champion: 1 3), Matachin [Thieme: 1 ¢ ] (coll. McLachl.)—Wnst 
InpiEs, Cardenas * in Cuba!~$ (Gundlach: 1 3; Dohrn: 12; M.C.Z, coll. P. P.C.: 
1 ¢), Isle of Pines % 
