No. 39] ODONATA OF CONNECTICUT: LIBELLULIDAE 29I 



superiors about twice as long as the inferior; hamules (Fig. 63, 

 No. 14) without lateral lobes, and consisting entirely of hooks 

 which are longer than the auricles (genital lobes). 



Female. — Brown area of the hind wings enclosing a somewhat 

 larger pale spot on the mesal margin ; vulvar lamina about as long 

 as segment 9 and bifid for about two-thirds its length. 



Measurements : total length, male 52, female 45-49 mm. ; length 

 of abdomen, male 27-30, female 27-30 mm. ; length of hind wings, 

 male 41-43, female 43 mm. ; width of hind wings, male 17-18, 

 female 16-18 mm.; length of stigma, male and female, 2 mm.; 

 superior anal appendage, male 3.5 mm. 



Distinguished from most other Libellulids by the great width 

 of the hind wings and the shape of the stigma ; from T. lacerata, 

 by the shorter anal appendage of the male, and the longer hamules, 

 as well as by the smaller enclosed pale triangle on the proximo- 

 anal margin of the wings in both sexes. 



Connecticut. — Branford, 26 May, 1918 (B. H. W.). 

 New England. — May 26-September 8. 



Tramea lacerata Hagen 



Synopsis of the Neuroptera of North America, 145: 1861. 



Nymph (PI. iv, Fig. 2). — Color brown. 



Head : labium very large, the mentum extending between the 

 middle pair of coxae, the front margin projecting considerably, 

 evenly rounded and with but few spines or setae ; palpi very broad, 

 the mesal margins with about 10 rounded teeth with small denticles 

 and 3-4 larger spines on each tooth; mental setae 14-15 (Need- 

 ham) ; antennae 7-segmented, the fourth segment half as long as 

 the third ; dorso-mesal margins of the compound eyes with an 

 angle, the angles of the two separated by 1.5 mm. 



Thorax : pronotum forming a plate which extends back over the 

 mesothorax nearly to the base of the wing-pads and hides the 

 mesothoracic spiracles completely; legs yellow, with indefinite 

 brown rings on the femora, the hind femora about 8 mm. long; 

 outer wing-pads very broad at base (4.1 mm.), extending to the 

 eighth abdominal segment. 



Abdomen: broad, the lateral margins thin and plate-like, the 

 lateral keels of 8 and 9 with very long spines (PI. iv, Fig. 2), the 

 distance from the tip of the spine to base of the segments bearing 

 them being 4.5-5 mm. ; anal appendages nearly equal in length, the 

 laterals a trifle shorter than the median, and this in turn a little 

 shorter than the ventral. 



Measurements : total length, 24 mm. ; length of hind femora, 

 8 mm. ; length of mentum, 6.5 mm. ; width, 5 mm. to 2 mm. at 

 base ; length of metathoracic wing-cases, 6 mm. ; greatest width 

 of abdomen, 9 mm. 



