177 



Macristis schausi form flavipennis nov. 



A single specimen possesses such strikingly bright yellow coloration that, 

 compared with the holotype of schausi which is dark brown, it appears super- 

 ficially a distinct species ; but it is similar in all respects except in color ; and in 

 that the maculation tends to be obsolescent, only the costal half of the t. a. 

 line, the t. p. line, and the terminal dots being distinct on the primaries ; while 

 only the terminal dots are visible on the secondaries. It would appear that 

 heretofore color has been one of the main characters used to separate some 

 of the exotic species. Intergrades to typical schausi are present but have been 

 placed under the specific name. 



Expanse: 17 mm. 



Type locality: San Benito, Tex. 



Number and sexes of types: Holotype 9 , 1-7 Aug. 



NOTODONTIDAE 



Datana perspicua race discalis Dyar. 



1923, Dyar, Ins. Insc. Menst., XI, 10, perspicua race, Datana. 



eilecim Dyar, 



1923, Dyar, Ins. Insc. Menst., XI, 11, perspicua race, Datana. 



form infusa Dyar. 



1923, Dyar, Ins. Insc. Menst., XI, 11, perspicua race discalis dim. form, 

 Datana. 



form PERFUSA Dyar. 



1923, Dyar, Ins. Insc. Menst., XI, 11, perspicua race discalis dim. form, 

 Datana. 



The Barnes Collection possesses four larvae from San Diego 

 which agree with Professor Cockerell's description of the larvae of 

 mesillae. A single adult from Deming, N. Mex. is the same as Arizona 

 and California specimens, all representing a single race. Over forty 

 specimens from California and sixty specimens from Arizona are 

 before the authors. 



In view of the fact that the authors do not know the location of 

 the type of mesillae and hence cannot examine it ; and possess no 

 material from the region of Mesilla, N. Mex. ; the name discalis is 

 temporarily retained for the southwestern race of perspicua. 



The name infusa may be retained as a very dark color form of 

 race discalis. 



