THE CANADIAN ENTOMOLOGIST. 205 



Abdomen much shorter than the wings, slender, dull luteous, more 

 yellowish on the apex, articulations pale ; covered with very short pale 

 villosity. 



Female — Last segment short, yellow, split below near the ventral 

 margin with two, thick, black shining cylindrical appendages, which are 

 as long as the segment and covered with very long black hairs and 

 spines ; out of the superior part of this segment is protruded an additional 

 short segment with two short quadrangular yellow plates with black 

 margins, and below two transversal rows of very strong black spines. 



Male — Abdomen not longer than of the female ; ventral part of last 

 segment not split below, yellow with long black hairs, forming a large 

 spoon-shaped part ; there are no cylindrical appendages ; the additional 

 segment forming two yellow plates which are shorter but much more pro- 

 longed below and a little enlarged ; margin black with long black hairs 

 below, without the rows of spines ; above on dorsum with a bunch of 

 hairs. 



Legs slender, pale, with black hairs ; the femur, tibia and all joints of 

 tarsus black on tip ; a fine black ring on tibia not far from the knee ; 

 spurs as long as the basal joint, straight fuscous. Wings long, narrow, 

 front wings with the costa straight, curved strongly on tip, which is short, 

 about rectangular ; hind margin very slightly incurved, so that the wing 

 is broadest near the apical third ; hind wing nearly as long, a little 

 narrower, sharply pointed ; hind margin a little sinuate on the apical half, 

 broadest near the middle of its length ; hyaline, hairy, veins fine, dark ; 

 subcosta, mediana and submediana interrupted with pale yellow ; ptero- 

 stigma small, whitish. 



Length of body, 30 to 34 mm.; exp. al. 80 mm. 



Hab. — Burmeister's type from Savannah, Georgia, very probably col- 

 lected by Dr. Zimmermann ; it is a female, and was described out of 

 Winthem's coll.; the label, immaculatus De Geer, in Burmeister's hand- 

 writing, is still on the pin. I have raised male and female in July, 

 1883, out of larvse from Alabama, given by Prof. Lyon ; I have the 

 full grown larva, larva skin, nympha skin and cocoon. The larva is 

 called Doodle, and it is a favourite pleasure of children to kneel in the 

 sand near the holes and to sing in a monotonous way, " Doodle, Doodle, 

 etc." It is believed that the animal comes out to receive food. But I 

 have to remark that the larva of Tetracha Carolina is treated similarly. 



