232 ENTOMOLOGICAL NEWS. [Sept., '05 



seta-bearing tubercles. In G. tanaccti the median tubercles 

 are arranged in wholly regular longitudinal rows, while in G. 

 pomonce and G. interrupta the tubercles of this series are not 

 in regular rows. Of the four median tubercles of each seg- 

 ment the anterior pair is wide apart, the posterior pair close 



together. 







A New Megathymus from Arizona (Lepidoptera, 



Rhopalocera, Hesperidae.) 

 BY HENRY SKINNER. 



M. polinyi n. sp. $. Head above grey, below white ; antennas black, 

 with a few white scales at the joints and white at the base of the club ; 

 body above orange fulvous, grey beneath. 



Primaries. Black and orange-fulvous, with a black border to the ex- 

 terior margin evident at the apex ; on the orange-fulvous inside of this 

 border is a black spot of irregular shape ; in the centre of the wing is 

 another black spot irregularly round in shape ; the base of the wing is 

 orange-fulvous. 



Secondaries. Border black; there is an orange-fulvous band which 

 starts from below the costa and extends nearly to the interior margin ; 

 the base is orange-fulvous. 



Underside. Primaries : these are much as above, except that the 

 upper part of the orange-fulvous band is white. Secondaries : grey, with 

 an irregular whitish band parallel to the costa and exterior margin ; it 

 begins as a spot and then narrows into a line and then gradually widens 

 in an irregular way ; in the centre of the wing are two whitish spots, the 

 lower one much the larger of the two. Expanse 44 mm. 



The female is a trifle larger, but the markings are the same. 

 This species is allied to ncumoegcni Edw. but is smaller and 

 may be differentiated at once by the white band on secondar- 

 ies below. Described from a and 9 sent by Mr. O. C. 

 Poling. The labels say So. Arizona, Oct. i5th to 3oth. I 

 suppose they were taken in the Baboquivari Mountains, Pima 

 County. 



Mr. .Poling has also sent me a pair of hesperids which rep- 

 resent a new variety. The species is Heteropia melon Godman 

 and Salvin, and these specimens from the Baboquivaria Mts., 

 Pima County, Arizona, July i5th to 3oth, differ in their having 

 marginal border of the secondaries below (outer third of the 

 wing) very much whiter. I propose the name arr.oncnsis. 



