DIURNAL LEPIDOPTERA. 25 



No. 38. — Danaus Archippus. — To a common observer 

 this and the preceding species closely resemble each 

 other, but the larva of the former has some spinous appen- 

 dages which are not found on this, and the crysalid of the 

 one has a roman nose-like protrusion on its side, while the 

 other is uniformly cylindrical, without any appendage, and 

 is green, decked with gilt spots. 



No. 39.— Lyc^na Americana. — This little and common 

 species resembles the European analogue, but is specifi- 

 cally distinct. Early in the spring a small green worm, 

 which is the larva, may be found in considerable numbers 

 upon the leaf of dock and sorrel. 



No. 40. — Thecla Favonius. — This plain species is occa- 

 sionally seen hovering about oak bushes, yet it is among 

 our most rare species. At Oatskill, on the Hudson river, 

 I once saw numbers of them. 



No. 41. — T. HuMULi. — This is sometimes found among 

 our hop vines. 



No. 42. — PoLLYOMMATUS PsEUDARGioLus, and three other 

 species. are frequently seen about our gardens and fields, 

 though from their small size they attract little attention. 

 The food of the larvge is not known to us. 



No. 46. — Lybithea Bachmanii. — I first discovered this 

 new species in Mahoning county, Ohio, many years since, 

 but learned nothing of its habits. Last summer I met 

 with a number of specimens at Dayton, and still greater 

 numbers in possession of Dr. Hoy, at Racine. From him 

 I learn that while the common raspberry of the garden is 

 in flower, that it is a common resort of this insect, and it 

 is probable the larva feeds on the leaves of this shrub. 



No- 47. — Hesperia Tityrus. — Is abundant wherever the 

 locust tree flourishes. The other species of Hesperia are 

 equally common, though their habits are less known. 



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