Vol. XXV] ENTOMOLOGICAL NEWS. 55 



Texas, by pools along the railroad to Brownsville. Both 

 submedianus and subdpicalis were taken, but were not distin- 

 guished at the time. The two species were associated again 

 at Williams Lake on May 26. On June 3 and 4 submedianus 

 was taken at an artificial lake along the Frisco R. R. about 

 1 1/2 miles north of Wister, Oklahoma. 



CHARACTERS OF PALLIDUS, SUBMEDIANUS AND SUBAPICALIS. 



Size. Abdomen : pallidus, male 39-42, female 40-43 ; submedianus, 

 male 38-41, female 39-42; subapicalis, male 39-40, female 40. 



Hind wing: pallidus, male 31-33, female 34-36; submedianus, male 

 30-33, female 35-39! subapicalis, male 31-34, female 36. 



Head. Face unmarked, apparently yellowish green in submedianus 

 and subapicalis, and paler green, without yellowish, in pallidus. In 

 Rambur's types, de Selys 4 and 5, much discoloration is evident ; in 

 4 entire face and frons above are brown; and in 5 the frons, both 

 in front and above, is sharply brown. The color pattern of the frons 

 at its base above is distinct in the three species ; in pallidus there is a 

 brown basal stripe of practically uniform width, if anything widest 

 at the middle ; in submedianus the stripe is distinctly notched or nar- 

 rowed in front of the median ocellus; and in subapicalis it is re- 

 duced to two spots, one on each side of and in front of the median 

 ocellus, these spots joined medianally in the single female. The 

 entire vertex is dark brown, almost black, in pallidus; in submedianus 

 it is paler, and the postocellary vertical ridge is still paler and greenish, 

 only slightly darker, especially along the anterior border, than the 

 frons and the occiput; subapicalis is fairly intermediate between the 

 two others in this character. Fig. 28 is of the postocellary ridge in a 

 Florida male of pallidus; Hagen's I and 2 have the ridge much like 

 figure 31 ; pallidus and submedianus males which might be confused 

 by the form of the appendages, are certainly clearly separated by the 

 form and color of this ridge. 



Thorax. Green, apparently inclining to brownish in pallidus and 

 yellowish green in the other two. So far as I can detect in the 

 pallidus before me there is no dorsal stripe on either side of the 

 carina, and the carina itself is pale excepting at the median angle. 

 Tn submedianus and subapicalis the carina is dark above the median 

 angle, and there is a very narrow dorsal stripe on either side, or 

 this reduced to a vestige or, in one male of subapicalis, entirely want- 

 ing. (This variation, I believe, is not entirely due to post-mortem 

 changes.) (In the single female referred to subapicalis the thoracic 

 markings are the most developed of any specimen before me ; in 

 this case the dorsal stripes are wide and long, and closely approach the 

 middorsal carina). Antehumeral brown stripe present (wanting in 



