THE CANADIAN ENTOMOLOGIST. 275 



THREE NEW GOMPHINES. 



BY JAMES G. NEEDHAM, LAKE FOREST, ILL. 



Herewith I offer descriptions of three new species of dragon-flies of 

 the subfamily Gomphince of Odonata. Figures of the appendages of all 

 will appear in my forthcoming handbook of the dragon-flies of North 

 America. 



Gomphus lentulus, n. sp. 



Length 49 mm., abdomen 34 mm., hind wing 29 mm. 



Colours obscure (due in part to fading of specimen) ; face obscure 

 yellowish, shining ; frons above and occiput and the ridges above the 

 lateral ocelli yellow, the remainder of the vertex brownish. Prothorax 

 brownish, with a double median spot of yellow on the dorsum. Thorax 

 obscure yellowish, with a faint indication of a pair of narrow stripes 

 of brown beside the middorsal carina, and of broader antehumeral 

 and humeral stripes ; a brown pale line on the third lateral suture. Legs 

 black, hairy (male), with coxre, trochanters, external (dorsal) face of the 

 tibiae and of the two basal segments of the tarsi yellow. Wings hyaline, 

 costa yellow, stigma fulvous, covering 5-6 cells; antecubitals 13-14011 

 the fore wings, 9-10 on the hind wings ; postcubitals 10-n on all wings ; 

 no anal loop, but veins Ai and A2 are widely separated at base, and 

 ihere is a single elongated cell between, as is usual in G. villosipes; 

 between the anal triangle and this cell there is but one other cell bordering 

 on the anal vein. 



Abdomen brownish, broadly streaked with yellow longitudinally on 

 segments 1-4, becoming suffused with rufous on segments 7-9 ; segment 

 10 and appendages yellow; segment 9 cut very obliquely at apex, longer 

 on the dorsal side, its lateral margins little dilated. Superior appendages 

 shorter than the inferiors, strongly divergent, straight, scarcely tapering, 

 suddenly obliquely truncate on end, with an acute internal angle and a 

 broad, black caruncle under the obtuse external angle. Inferior appendage 

 roundly divided, its forks not wider apart than are the two superior 

 appendages, straight, tapering to the darker coloured, sharply-upcurved 

 tips. 



