LIBELLULA. 211 
N.Y. ii. p. 285 (1896)°; Ent. News, viii. p. 39 (1897) *°; Currie, Proc. Eut. Soc. Wash. 
v. p. 803 (1908) *; Needham, Proc. U. 8. Nat. Mus. xxvii. p. 705, t. 42. fig. 1 (nymph) 
(1904) », 
Some individuals agree with the characters given above except that the yellowish-brown of the wings stops 
at the nodus (e. g. Pasadena ¢ ¢, San José del Cabo ¢ 2); others agree with the characters given except 
that the submedian space, supratriangle, and triangle of the hind wing are not darker than the rest of the 
wing (a 9 Cuernavaca, Cuautla 9,8. J. del Cabo some ¢ co). 
Hab. Unitep States, Montana®>®, Yellowstone 3-69 1012 (Hayden, Adams, coll. 
P. P. C.: 2 8), Saw Tooth in Idaho *, Fort Collins in Colorado (coll. Colo. Agr. 
College, P. P. C. det.), Spring Lake in Utah’, Mt. Tamalpais (Osten Sacken, coll. 
P.P.C. ea M. C. Z.: 1 2), San Rafael (MZ. C. Z.), San Francisco (Ricksecker, A. N. 8. 
ex Cope Coll.: 1 3), Palo Alto (Kellogg, P. P. C. det.), San José 1°, Pasadena [ Grinnell : 
2 ¢], Claremont [Baker: 1 3], Los Angeles® [Davidson: 2 3] (colls. A. N. S., 
P. P. C.), “San Diego trip” !2, all in California, Arizona*®!!; Lower CaLirornia, 
San Ignacio ®, Miraflores *, San José del Cabo 8 (Hisen, coll. P. P. C.: 18 3,3 9)— 
Mexico (U. §. NV. M.: 1 3), Monterey in Nuevo Leon (Rhoads: 1 3,1 2), Durango 
(Barrett: 1 3 |, Guadalajara [McClendon: 2 3, 12] (coll. P. P. C.), Guanajuato 
(U.S. N. M., P. P. C. det. 1891), Uruapam (Deam, Rhoads: 2 3), Cuernavaca (coll. 
Deam, Barrett, Tower, colls. Adams, P. P. C.: 8 3,1 2), Cuautla in Morelos (Tower, 
coll. P. P. C.: 1 @), Oaxaca (Deam: 5 3). 
Taken from April to October in the Mexican localities. 
b. Intermediates between saturata and croceipennis. 
Libellula saturata, Calvert, Proc. Calif. Acad. Sci. (2) iv. p. 516 (1895) (in part.) *. 
Belonia uniformis, Needham, Proc. U.S. N. M. xxvi. t. 48. fig. 2 (wings) (1903) *. 
The colour-gradations have already been described’; the others may be tabulated thus :— 
Hind wing: Genital hamule, 
number of cells to ale: width Front wing : 
Hind wing: point on front} Hind wing; which two rows ren tar (4) Prana ge of 
Individual. margin to which basal - submedian (or two cells) extend & bequal (=) ccstal ed * in 
yellowish-brown reaches. cross-veins. between short sec- or lose (—) than nm 
tor and suppl. sector leneth : 
next below. gm. 
Cuernavaca, ¢, July ..| Nodus, R2,L1 R2,L14 + 6 
” g; ” ” 2 R1,L4 wees 65 
” 3, Sept...) First postnodal. 2 R1,L2 + 6 
Cuautla, ¢, Aug. ....} Nodus. 2 R3,L12 + 6 
2” 3 9 ” ” 2 R 4, L 2 + 55 
Uruapam, ¢, July ....| First postnodal. 2 R4,L3 = 55 
S. J. del Cabo, ¢, Oct.. Third | » ial 2 9 5 
Third antenoda 
” » Gs » { beyond triangle. } 2 3 + 5 
” » >» » | Nodus. 2 9 ~ 5 
Round Mt., 2, June ..} Distal angle of triangle. 2 R2,L4 7 
