164 CONNECTICUT GEOL. AND NAT. HIST. SURVEY [Bull. 



Thorax : pronotum with yellow spots and caudal margin, meso- 

 and metathorax dark brown and yellow, pattern as in Fig. 22, 

 No. 8. 



Abdomen: brown with pale dorsal lines on terga 3-6, and 

 broader ones on i and 2 (1.5 mm. broad) ; sides of i and 2 and 

 part of 3, pale; basal spots on 7 and 8 (sometimes 9), a large spot 

 on the cephalo-lateral angles of 8, and larger spots occupying the 

 entire ventral margin of 9; segment 10 and anal appendages 

 black ; segments 8 and 9 much expanded, the distance between the 

 ventral margins of terga 8 measuring about 4 mm. 



Female. — Similar to the male, but with pale stripes on the 

 lateral or cephalic surfaces of the hind femora; terga 7 with a 

 pale spot on lateral margin ; lateral margins of 3-5, and broad 

 lateral stripes on 1-3 also pale ; vulvar lamina as in Fig. 20, No. 14. 



Measurements : total length, male 50, female 55 mm. ; length 

 of abdomen, male 35-39, female 38-40 mm. ; length of hind wings, 

 male 29-30, female 31-32 mm.; width of hind wings, male 9, 

 female 10 mm. 



Described from specimens in collection of P. P. Calvert and a 

 male and female in the collection of the writer. 



Gomphus graslinellus Walsh 



Proceedings of the Academy of Natural Sciences of Philadelphia, 394: 

 1862. 



N5miph. — Labium shown in PI. v, Fig. i. 



Adult, male. — Color olive and dark brown to black. 



Head : labium, labrum, clypeus and front except a black trans- 

 verse preocellar stripe, pale ; occiput pale ; postgenae brown, pale 

 at sides. 



Thorax : pronotum with 3 yellow spots ; mesothorax with a 

 broad median pale stripe on each mesepisternum which connects 

 with the mesothoracic half-collar in front and with the narrow 

 pale lateral streak (sometimes very indistinct) at the wing bases; 

 metepimera with a broad pale stripe from shoulder to wing base, 

 most of the metepisterna brown, the metepimera pale, with dark 

 cephalo-dorsal border ; venter of thorax pale ; legs mostly black, 

 the coxae and trochanters pale, femora black (sometimes with pale 

 cephalic surfaces) ; tibiae black with a faint streak at base, tarsi 

 and claws black ; wings clear. 



Abdomen: with yellow mid-dorsal stripe on terga 1-6 inclusive, 

 and basal spots in line on 7 and 8 ; 9 with a broad mid-dorsal stripe, 

 10 with a narrow line; sides of terga i and 2, basal portion of 3, 

 small circular spots on cephalo-lateral angles of 4-7 inclusive, 

 yellow ; broad yellow stripes on lateral margins of 8 and 9 ; anal 

 appendages black ; superiors viewed from above with a prominent 

 lateral angle, the angle also visible from the side. Accessory 

 appendages as shown in Fig. 22, No. 7. 



