202 STUDIES IN THE GENUS THANAOS 



Penna., (Engel); New York, N. Y., (BeutenmuUer) ; Michigan, (Newcomb); 

 Omaha, Nebraska, IV and V, (Leussler). 



Scudder says it is single brooded in the North. In southern New Jersey- 

 it is common in the dry sandy districts among scrub oaks, 

 var. sotnnus Lintner, Papilio, i, 73, 1881. 



Described from one male and one female. Ttjpe locality. — 

 Indian River, Florida. Types in the Edwards collection, Carnegie 

 Museum, Pittsburgh, Penna. Holland, Butterfly Book, pi. 48, 

 fig. 2, male. 



Male expands (one wing) 15 to 18 mm. 



"Dark brown in color, approaching T. persius. Primaries, without the 

 anteapical white spot above, and the large patch of bluish-white scales rest- 

 ing on the discal cross-vein of T. icelus. The black transverse bands are 

 almost lost in the ground color. Secondaries, nearly as dark as the pri- 

 maries, showing indistinctly the two rows of pale brown spots." 



The female expands 17 mm. and is lighter in color than the male and has 

 a conspicuous patch of whitish scales on the discal cross-vein. 



It has thus far been found in Georgia and Florida only. 



Records. — Thomasville, Georgia, III, 21 (Morgan Hebard); Georgiana, 

 Indian River, Florida; Ormond, Florida, III, 27; Osprey, Florida, III, 11. 



It appears to be a dark, smoky variety of brizo. I have been 

 unable to find any essential difference between the genitalia of 

 somnus and brizo. The females of the two differ more than the 

 males in appearance. I have intermediates in color between the 

 two from southern New Jersey (Clementon, April 24). Brizo and 

 somnus differ as do some other butterflies that have a northern and 

 southern range as for example Papilio turnus, ajax; Limenitis 

 archippus. 



Thanaos callidus Grinnell, Ent. News, xv, 114, 1904, figs. 1, 2, 3, genitalia. 



lacustra Sright, Butterflies of the West Coast, p. 253, 1905, pi. 32, figs. 



480, 480a. 

 Grinnell, Ent. News, xvi, 339, 1905 (puts lacustra as a synonym of callidus) _ 



Callidus was taken on Mt. Wilson, Sierra Madre Mountains, 



Los Angeles Co., Cahfornia. Altitude 5886 feet, June 6. The 



types of lacustra came from Blue Lakes, California, Maj^ 10. 



Dyar (Journ. New York Ent. Soc, 13, 121, 1905) says, from an 



examination of the type, that callidus is a rather small, narrowlj' 



marked brizo, with dark ground color. All that I know of this 



species is the figure given by Wright. It appears to be closely 



related to brizo if it is not the same thing. 



