1915] Muttkowski: Studies in Tetragoneuria (.Odonata) 
lateralis BURMEISTER, Handb. Ent., 2, p. 847, 1849; tf 1 , ( Epophthal - 
mia), type M. C. Z. 
HAGEN, Syn. Neur. N. Am., p. 139, 1861; $ , ( Cordulia ). 
Hagen 1873. 
CALVERT, Trans. Am. Ent. Soc., 25, p. 58, 1898; on Burm. type. 
Nymph. CABOT, Mem. M. C. Z., 17, p. 28, 1890; desc: 
NEEDHAM, Bull. 47, N. Y. State Mus., p. 492, 1901; desc.; t. f. 
20, abdomen. 
Distr. Transition to Carolinian, Maine and Minn, to Ga. and Okl. 
forma cynosura cynosura SAY, cum antea pro cynosura, except syn. 
MUTTKOWSKI, Bull. Wis. N. H. Soc., (2) 9, pp. 95, 106, 1911; 
desc.; pi. 6, 7, wings. L. c., (2) 13, pp. 53, 60, 1915; dist. and disc. 
Distr. Southern specimens, N. Y. and Iowa Southward. 
forma cynosura simulans MUTTKOWSKI, Bull. Wis. N. H. Soc., (2) 9, 
pp. 95, 106, 1911; desc., an arbitrary name; pi. 7, 8, wings. 
L. c., (2) 13, pp. 53, 60, 1915; dist. and disc. 
Syn. difinis SELYS, Bull. Acad. Belg., (2) 31, p. 272, 1871; insufficient 
diagnosis. 
semiaquea CALVERT, Trans. Am. Ent. Soc., 20, p. 252, 1893; pars. 
NEEDHAM, Bull. 47 N. Y. State Mus., p. 493, 1901; dist. 
HOWARD, Ins. Book. 1902; pi. 43, f. 1, cf adult. 
MARTIN, Cat. Coll. Selys, 17, p. 42, 1907 ; desc. (race of cynosura ). 
MUTTKOWSKI, Bull. Wis. N. H. Soc., (2) 6, p. 104, 1908; desc. 
Distr. Northern specimens, N. Y. and la. northward. Reaching coast 
in Mass. 
diffinis SELYS, syn. ad cynosura simulans. 
indistincta MORSE, MARTIN, syn. ad spinigera. 
lateralis BURMEISTER, HAGEN, syn. ad cynosura cynosura. 
morio MUTTKOWSKI, Bull. Wis. N. H. Soc., (2) 9, pp. 96, 125, 1911; 
cf 1 $ desc., holotype Milwaukee Mus.; t. f. 5, cf $ char. 
Distr. Boreal into Trans., Wis., Mich., and Me. 
petechialis MUTTKOWSKI, Bull. Wis. N. H. Soc., (2) 9, pp. 95, 101; c? $ 
desc.; types Milwaukee Mus., Coll. Calvert. 
Distr. Austroriparian, Tex. to Fla. 
semiaquea (BURMEISTER), Handb. Ent., 2, p. 858, 1839; $, ( Libellula ), 
holotype M. C. Z. 
HAGEN, Syn. Neur. N. Am., p. 140, 1861; 9 d\ ( Tetragoneuria ). 
Proc. Boston Soc., 16, p. 360, 1874; notes ( Cordulia ) 
CALVERT, Trans. Am. Ent. Soc., 20, p. 252, 1893; desc. ( Tetra- 
goneuria i); pars. L. c., 25, p. 88, 1898; on Burm. type. 
MUTTKOWSKI, Bull. Wis. N. H. Soc., (2) 9, pp. 95, 118, 1911; 
desc. & disc.; pi. 8, wings. 
