Scudder.] 194 



nearly if not quite reaches the posterior edge, but extends no nearer 

 the apex than the middle of the pterostigma, starting from half way 

 between the nodus and pterostigma; the abdomen (in life) has the 

 segments 4-6 black, the others blue pruinose; the pruinosity re- 

 mains in one specimen before me, in another it is seen only on seg- 

 ments 1-3, and on the others none at all; the abdominal markings of 

 the 9 are altogether wanting ; the width of the swollen base is to that 

 of the posterior half of segment sixth to the ninth segment as four to 

 six; antecubitals 15-16; postcubitals 9-11. 



Length 1.75-1.78 inches; alar expanse 3.04 inches. 3 (J, 1 9. 



Dythemis pleurosticta (Burm.) Hagen. 



I consider £is belonging to this species six specimens obtained by me, 

 all but one of which are teneral ; I could not, however, have consid- 

 ered them identical with Burmeister's L. pleurosticta from Brazil, 

 had not Dr. Hagen compared his types with specimens from Cuba; 

 the expression " thoracis dorso trilineato " would not have been applied 

 to specimens the dorsum of whose thorax was figured with a rather 

 broad humeral streak, very broad and angulated at the humerus, and 

 with the barest possible indication, when any, of a median line ; in 

 other respects my specimens agree with the descriptions of Burmeister, 

 Selys and Hagen, except that the membranule should rather be 

 described as whitish-cinereous (those of the teneral stage almost 

 milk-white), that the pleural spots of the thorax are pale bluish- 

 white (In the teneral stage milk-white), and that the apex of the 

 primaries beyond the nodus in the teneral 9 is fumose, faintly 

 fenestrated with fuscous. 



In the living specimens the vertex of the head is bronze-black with 

 purpHsh reflections, but next the eyes, as in dried specimens, reddish- 

 brown ; the upper part of the face is very pale bluish-white, below dull 

 reddish-brown, passing to the upper part of the labrum, and including 

 the apical half of the labium ; the thorax is testaceous marked with 

 black, the spots bluish white (or in teneral specimens milk-white) ; 

 there is a minute yellowish spot on black ground on the pleura, just 

 above the hind coxas ; abdomen pitchy-black, marked with bluish-white 

 (or in teneral specimens milk-white, a little dull). 



Antecubitals 13-15 ; postcubitals 8-10 ; alar expanse 2.5-2.64 

 inches. 16,1 teneral i , 4 teneral 9 . 



Mesothemis Poeyi nov. sp. 



Vertex and upper portion of front, except at the sides, chalybeous (in 

 life bronze-black with deep purplish reflections) ; face and mouth pale 

 yellow (in life pale greenish-yellow) ; back of the head between the 



