18 E. B. Williamson and J. II. Williamson 



stigma front wing male 1.07-1.20, female 1.27-1.40; stigma hind wing male 

 1.27-1.40, female 1.47-1.50; abdominal appendage male 1.5-1.6, female 

 .35-40 ; male anterior lamina from apex of sternum of segment 1 to apex 

 of the posterior process 1.55-1.60; female valve 2.14-2.26. 



Male. — Head similar to that of remotus. 



Prothorax similar to that of remotus, but slightly paler, the hind border 

 straighter, the median and lateral lobes less evident. 



Thorax similar to that of remotus but duller; mesepimeron largely brown 

 instead of black; the black stripe on the second lateral suture is slightly 

 narrower and at the metinfraepisternum it is not joined across the metepi- 

 meron with the ventral black as it is in remotus. Metasternum black as in 

 remotus, but with a pale median longitudinal area of variable width from 

 the level of the angle of the latero-ventral carinae to near the apex of the 

 metasternum. 



Mesostigmal lamina low, nearly straight, a short shallow concavity just 

 before its lower end. 



Coxae pale, a triangular dark area on the anterior face of the third, and 

 the posterior face of the second and third largely dark. Femora black but 

 with the anteapical pale spot of remotus enlarged to an anterior pale stripe 

 on each femur from the coxa quite to or near the apex. Tibiae as in remotus. 



Venation and stigma as in remotus. 



Abdomen seen from above : 1 with a large squarish median basal brown 

 spot reaching about two-thirds the length of the segment, narrowly separ- 

 ated from an apical brown area which joins the apical ring of dark brown 

 or black ; 2-6 about like 2-6 in remotus, but the paler area on each seg- 

 ment, except the postbasal, is slightly more extensive on 3-6 in magdalenae ; 

 the postbasal pale areas on 7 are more nearly joined in the median line 

 in magdalenae so that 7 is about the same pattern in magdalenae as 6 is in 

 remotus; 8-10 black. Seen from the side: 1-7 as in remotus, but the basal 

 ventral spot on 2 is reduced to an inconspicuous small brown area in 7nag- 

 dalenae and the pale areas, except the postbasal pale areas, are more ex- 

 tensive in magdalenae ; 8-10 as in remotus. Sternum of 1 pale, brown at 

 base, shading out into the pale color about midlength of the sternum; 

 anterior lamina as in remotus ; lateral pattern of 3-7 carried across the 

 sterna ; 8-10 and color of appendages as in remotus. 



Length of the wing or lobe on the expanded postero-ventral margin of 

 the tergum of 2 about .7 and the distance from the apex of this lobe to the 

 antero-ventral angle of the tergum about 1.9. 



Female. — Head similar to that of the male. 



Prothorax largely pale, a longitudinal median pale brown stripe and 

 proepimeron largely brown; dorsum of hind lobe, against the posterior 

 border, elevated into an erect, acute, median spine about .5 long ; lateral 

 margin of hind border rather prominent, the supero-lateral angle about 90°. 



Thorax similar in color pattern to that of the male, but the black is 

 replaced by dark reddish brown except a narrow black border to the pale 

 middorsal stripe, and the stripe on the second lateral suture which re- 



