1974] 
Burns — Polytypic Genus Celotes 
61 
Fig. 8. Spatial distribution (based on material examined) of Celotes 
limpia — Trans-Pecos Texas. Mountains and the borders of counties are 
shown. Type locality indicated by arrow. The range as plotted spans a 
north-south distance of about 220 miles; but, since preparing this map, I 
have examined one male from southern Coahuila, Mexico, about 250 miles 
southeast of the Big Bend. 
than fig. 7 indicates. On the other hand, this map probably gives a 
close approximation of the eastern distributional limit of nessus. 
This meridional eastern limit coincides neatly with that of many other 
organisms — including other pyrgine skippers of the southwestern 
United States and northern Mexico such as Pyrgus philetas Edwards 
(Burns and Kendall 1969) and Erynnis meridianus Bell (Burns 
1964, and unpublished) — and reflects an important biogeographic 
barrier. 
There are two freaky records of streaky nessus east of the 97th 
meridian. The first [Burton, Georgia, V-21-1911 (J. C. Bradley) 
(Cornell University collection)] was published by Harris (1950) 
and repeated [as “Georgia (once!)”] by Klots (1951), but was not 
even mentioned later by Harris (1972) and should be discounted. 
The second [Tallulah, Louisiana, between VIII-1926 and X-1931 
(collected in the day at an altitude of 20 feet by an airplane)] was 
published by Glick (1939) ; but though it has been repeated (Lam- 
bremont 1954; Mather and Mather 1958), the feat itself has not. 
