96 NEUROPTERA. 
Var. plana (Hagen, MS.), var.n. (Tab. IV. fig. 58.) 
Hagen attached the name A. plana to specimens in the M.C. Z. from Arizona which closely resemble A. vivida, 
except that the blue of the latter is replaced by violet, while the female has segments 8 and 9 blue with 
a short inferior black stripe on the apical half of each side; the amount of pale colouring on the thoracic 
dorsum is rather larger than usual in 4. vivida, as the antehumeral stripe is as wide as the black mid- 
dorsal. These Arizonan “A. plana” are apparently not structurally different from A. vivida. he 
Mexican material enumerated below contains individuals of violet colour, as in those from Arizona, leading 
gradually to the specimens having the proportions of the appendages modified to those shown in fig. 58, 
Tab. LV., which, as seen by comparing fig. 59, are much as in A. funebris. None of these “A. plana” 
lack the postbasal black streaks on all of the segments 3-6 as A. funebris 3 does. Moreover, a cousider- 
able number of Mexican males of .A. plana have an inferior black line or stripe on either side of segments 
8 and 9, this stripe being as long as the segment on 9 in at least six individuals. Variations in the 
extent of this black stripe on segment 9 occur in one and the same month and locality—Omilteme ; and 
in both teneral and more fully-coloured individuals. ‘The presence of black on segments 8 and 9 of the 
males is a feature not to be found in A. vivida, A. funebris, nor Hagen’s A. plana types, yet, as stated 
above, the series connecting these extreme forms of A. plana with A. vivida is a continuous one. It 
seems likely that a complete transition may hereafter be found between A. plana and A. funebris. 
The following statistics of var. plana may be compared with those of A. vivida :— 
Pterostigma of the front wings °85-1:18 mm. long, surmounting more than one cell (80-5 °/, 3, 945°/, 9), 
one cell (15:25°/, 3), or less than one cell (4:25°/, 3, 5°5°/, 2); of the hind wings, ‘9-118 ¢, 
1-13 mm. ? long, surmounting more than one cell (80°5°/, 5, 82°3°/, 9), one cell (17°5°/, 3 9), or 
less than one (2°/, 3). 
Antenodal cells on the front wings 4(85°/, 3, 66°6 °/, 2), 5 (65 °/p 5, 11% 2), 3 (4:25 9, 5,165 /, 2), 
or 3+ (4:25°/, 3, 5°5°/, 2); on the hind wings 3 (96 °/, 5, 88°/, 9) or 4(4%/, 5,12, 2). 
Dimensions.—Abdomen, ¢ 29-33, 2 29-80°5; hind wing, ¢ 22-25, 9 25°5 mm. 
Hab. Unirep States, Arizona (C. U. lot 35, M. C. Z.: 5 g,1 2), Tombstone (coll. 
P. P.C., ¢« coll. J. G. Needham: 3°38, 2 2)—Mexico, Uruapam in Michoacan 
(Rhoads: 1 3; coll. Deam: 1 ¢), Cuernavaca in Morelos (H. H. Smith: 1 3,3 9; 
Barrett, coll. P. P.C.: 1 3), Omilteme [10 ¢, 3 2] and Sierra de las Aguas Escon- 
didas [1 ¢ | in Guerrero (H. I. Smith). 
‘Ihe specimens before me were captured between the months of April and August. 
Var. munda (Hagen, MS8.), var. n. 
This name was attached by Hagen to the specimens in the M. C. Z. from Arizona, which do not differ from 
A. vivida in the form of the appendages of the male, nor in that of the mesostigmal lamine of the female ; 
but they have the pale colours on the thorax violaceous, instead of blue, the black mid-dorsal thoracic 
stripe so reduced in width that the pale antehumeral is from two to three times wider, the black postbasal 
streaks on segments 3-6 very small, and the antenodal cells more numerous, as shown below. However, 
this variety cannot be regarded as sharply defined. 
Pterostigma of the front wings *8 mm. long, surmounting more than one cell (100°/, ¢ 2); of the hind 
wings ‘9 mm. long, surmounting more than one cell (100 °/, 3, 75 °/, 2) or one cell (25 °/, 2). 
Antenodal cells on the front wings 5 (75°/, 3, 87°5 %/o 2) or 4 (25 °/, 3, 12°5°/, 2); on the hind wings 
4 (92% 3, 625%o 2), B (25 %/o Py B+ (4%o SF), 5 (125% Q), oF A+ (4% S). 
- Hab. Uniren States, Arizona (C. U. lot 35, M.C.Z.: 73,4 2), and Groom 
Creek, same State (coll. C. C. Adams: 1 3). — Mexico, Rio Verde (£. Palmer, 
MM. C. Z.: 4 3 ). 
