242 PROCEEDINGS OF THE ACADEMY OF [May,. 



21. Anal vein separating from the hind wing-margin (a) distad to 



the level of the arculus and (b) distad to the level of the cubito- 

 anal cross- vein. 



22. Anal cross-vein at the vein descending from the distal end of the 



quadrilateral. 



Comparison of Podopteryx (roseonotatus) with 

 Phenacolestes.-^^ 



(P. roseonotatus cf type of Selys (from Aru), 1 cf 1 9 Queensland 

 determined by Mr. Herbert Campion; all three in the British 

 Museum.) 



These two genera agree in the characters above numljered 5, 7,. 

 8^37 10,38 11^39 1240, 16, 176, and 18.^^ 



These two genera differ in the characters given below; after each 

 number the difference shown by Podopteryx is stated. 



1. Nodus at one-fourth of the wing-length. 



2. More often only two antenodals.**- 



3. Postnodals 32-35. 



4. Stigma less oblique, shorter in its proximo-distal dimension in 



proportion to its antero-posterior dimension. 

 6. The veins generally, posterior to Mi, have a more pronounced 



caudal curvature as they aJDproach the hind margin of the 



wing. 

 9. M2 separates from Mi at .37 to .43 of the distance from nodus to 



stigma. 

 13. Arculus at the second antenodal.^^ 



2" I am indebted to Mr. Herbert Campion for first calling my attention to the 

 desirability of comparing this genus with Phenacolestes. 



" There are 7-8 rows at the extreme margin, however. 



^^ There are 5-7 rows at the extreme margin, however. 



^^ In both front wings of the Queensland male and in the left front wing of the 

 female Rs is united with Ms for from one-half to one cell distad of the subnodus. 



■*" There are 5-6 rows at the extreme margin, however. 



^1 The right hind wing of the type male, the right front and left hind wings 

 of the Queensland female have a second cubito-anal cross-vein proximal to the 

 normal one and nearly mid-way between the levels of the first and second ante- 

 nodals; the normal cubito-anal cross-vein is, in all, nearer to the level of the 

 second antenodal. Prof. F. Foerster has also noted (Termesz. Fiiz. XXIII, 

 p. 104, 1900) an instance of two cubito-anal cross-veins in Podopteryx. 



*- The type male has three antenodals on all four wings, the third being distal 

 to the other two and not reaching posteriorly beyond the subcosta. The two 

 Queensland examples have only two antenodals on all the wings. The type male 

 has also a subcostal cross-vein, proximal to the first antenodal, on both front 

 wings and the right hind wing; this is lacking in the Queensland specimens. 



^^ Slightly distal to the second antenodal on the two wings of the right side of 

 the Queensland male. This is an appropriate place to record certain abnormalities 

 of the type male, already mentioned by de Selys (1886); three of its wings have 

 each a single medio-cubital cross-vein which, on the right front wing, is slightly 

 proximal to the level of the normal first antenodal, but on the right hind wing 

 and left front wing is slightly distal to the normal first antenodal. On the left 

 hind wing there is merely a slight rudiment or vestige of such a cross-vein pro- 

 jecting forward as a stump from Cu slightly distad to the level of the first ante- 

 nodal. 



