ENALLAGMA, 109 
Enallagma cyathigerum, Selys, Bull. Acad. Belg. (2) xli. p. 503 (1876) *; Lucas, Brit. Dragonfl. 
p- 297, t. 27 (entire insects, ¢ 2) (1900) °; Williamson, Ent. News, xiii. p. 144 (1902) °. 
_ Agrion annexum, Hagen, Syn. Neur. N. Am. p. 87 (1861)’. 
Enallagma cyathigerum, race ? annexum, Selys, Bull. Acad. Belg. (2) xli. p. 506 (1876) °, 
Enallagma annexum, Williamson, Ent. News, xi. p. 454, text-fig. a, t. 9. figg. 3, 7 (apps. 3) 
(1900) °. 
Hab. Norta America, Magdalen Islands in Gulf of St. Lawrence ®, Hermit Lake ® 
and Franconia (Mrs. A. T. Slosson, coll, P. P. C.: 1 3), White Mts., New Hampshire ; 
Massachusetts 8; Keeseville (Sheraton: 1 3) and Ithaca, New York (Calvert, 1895) ; 
Sitka7’, Alaska; Saskatchewan ®; Red River®; North Dakota (R. Osburn, in litt.) ; 
Spring Lake, S. Dakota [P. C. Truman: 1 3], Sandstone Creek, Montana [C. A. 
Wiley: 1 ¢,1 2], Wyoming ® [2 ¢ | (coll. P. P. C.); Victoria (R. Osburn, in litt.) 
and Vancouver 8, British ,Columbia ; Olympia [7. Kineaid: 1 3 ] and Seattle [0O. B. 
Johnson: 1 ¢], Washington; Park City, Utah [A. J. Snyder: 6 3] (coll. P. P. C.); 
San Gerénimo (Cockerell) and Zuni (Henshaw, M.C. Z.: 3 3), New Mexico; Pasadena, 
California °—NorTHERN AND CENTRAL EvRoPpE*+.—NortHery Asia to Turkestan (Selys, 
1872, 1889). 
This species will probably be found in elevated regions in Mexico, and it is therefore 
included here. 
The only differences which have been stated ® to exist between HL. annexum and the 
Old World £. cyathigerum, viz., the postocular spots posteriorly denticulated and 
the wider blue antehumeral bands of the former, are completely bridged over by such 
a series as the present from Park City, Utah, especially where, as in one of these 
males, one postocular spot is denticulated while the other is not. I have compared 
the above-quoted American examples with fifteen males from England and Germany, 
and as I can find no constant differences between them, I see no reason for not 
considering E. annexum a synonym of the older name. | 
(2. Enallagma calverti. 
Enallagma calverti, Morse, Psyche, vii. p. 208 (1895)*; Williamson, Ent. News, xi. p. 455, 
text-fig. b, t. 9. figg. 5, 9, 10 (apps. g) (1900); Proc. Indiana Acad. Sci. 1900, p. 173 
(1901)*; Currie, Proc. Wash. Acad. Sci. iii. p. 218 (1901) *; Harvey, Ent. News, xii. p. 197 
(1901) *. 
Hab. Unirep States, Maine® [1 ¢ ], Massachusetts![2 3]; Indiana?; North Dakota 
(R. Osburn, in litt.); Missoula, Montana [Klrod: 1 ¢ |]; Wyoming? [3 ¢ ]; Alaska +; 
Olympia (7. Kincaid: 23,19, pair in cop.), Washington; Nevada!; Denver 
(E. V. Beales, coll. P. P. C.: 2 3), Palmer Lake (H. Skinner, coll. A. N.S.: 7 3) 
Colorado; Red Butte Cafion, Salt Lake City, Utah (H. Skinner, coll. A. N. S.: 1 2 
1 @); East slopes Culebra range (Lieut. Carpenter, M. C. Z.: 4 6, footnote p. 111 
applies to these also), Las Vegas (A. Garlick), Beulah, 10,000 feet (4. Skinner, coll. 
