GOMPHOIDES. Ill 



sum of the thorax fusco-rufous, each side with a yellow stripe ; 

 sides fuscous, with three yellow stripes ; feet fusco-rufous, femora 

 luteous beneath, tibise within and the tarsi black ; abdomen ? 



; wings hyaline, with a fulvous, narrow, basal spot, ptero- 

 stigma large, rufo-fuscous. (From the description of De Selys 

 Longchamps.) 



15 16 antecubitals; 9 11 postcubitals; two discoidal areolets. 



Length 53 ? millim. Alar expanse 70 millim. Pterostigma 5 

 millim. 



Hob. North America (Yienna Museum ; collection of De Selys 

 Longchamps). 



2. P. zonatus ! 



Progomphus zonatus Hag.! Monog. Gomph. 203, 71 ; pi. xi, fig. 3. Selys! 

 Synops. 53, 70. 



Black, spotted with yellow ; head yellow in front, above black ; 

 thorax black, dorsum each side with two stripes, and sides with 

 three broader stripes, yellow; feet black; abdomen long, cylindri- 

 cal, the base subinflated, black, the dorsum with a basal yellow 

 line, the base of segment 7 yellow ; appendages yellow ; vulvar 

 lamina very short, emarginated ; wings fumose, pterostigma large, 

 black. Female. 



17 18 antecubitals; 9 11 postcubitals; two discoidal areolets. 



Length 52 millim, Alar expanse 70 millim. Pterostigma 5 

 millim. 



Hob. Mexico (collection of Dr. Hagen). 



GOMPHOIDES SELYS. 



Triangles with transverse veins ; the superior side shorter than 

 the others ; feet short. 



1. G. stigmata ! 



jfflschna stigmata ? Say, Journ. Acad. Philad. VIII, 17, 10. Progomphus 

 stigmatus Selys ! Monog. Gomph. 205, 72. Selys, Synops. 53, 71. 

 Gomphoides stigmata Hag.! Monog. Gomph. 423, 72; pi. xxi, fig. 5. 



Yellow, marked with black ; head yellow, above fuscous, the 

 vertex yellow ; thorax yellow, dorsum with a stripe in the middle, 

 two each side, and sides with two oblique stripes, black ; feet black, 

 femora yellow, bilineated with black at the apex ; abdomen slender, 

 inflated at the base, the apex dilated, yellow, segments 2 to 7 each 



