AMERICAN NEUROPTERA. 141 



gus compressicornis, Syntomosphyrum orgyice, Aphycus chrysopce, and 

 all the species of Isodromus issue from the cocoon. Two Ichneumons, 

 Otaeustes chrysopce and 0. atriceps have also been bred from cocoons. 

 A Proctotrypid, Telenomus chrysopce, has been bred from the eggs. 



Historical. 



Several of our early entomologists recognized that we had more 

 than one species of Chrysopa, but failed to distinguish them from 

 the European species. Thomas Say, the first in this, as in many 

 groups, described Chrysopa oculata in 1839. About the same time 

 Burnieister issued his " Handbuch " in which live species are de- 

 scribed from our country, one of which is considered identical with 

 Say's species. Nothing was published for a number of years, until 

 in quick succession appeared the works of Schneider (1851), Walker 

 (1853), and Fitch (1855). Schneider's work is a monograph of the 

 species of the world. He recognized all of Burmeister's species and 

 added two new ones. Walker's " Catalogue " contained three new 

 species from the United States. Fitch did not recognize any of the 

 previously described species, but described all the forms known to 

 him (twenty-three in number) as new. Probably he was unaware 

 of Schneider's and Walker's works. About twelve of his species 

 fall as synonyms. 



Hagen in his "Synopsis of the Neuroptera of North America" 

 (1861) added four species. Shimer in 1862 described one species, 

 since shown to be identical with one of Fitch's. In 1869 McLach- 

 lan described a handsome species from Texas. 



In 1890 Mr. Coquillett, in the Report of the State Board of Hor- 

 ticulture of California, described a new species — C. californica. In 

 1<S'.)2 the present writer described a Nothochrysa, and since then has 

 added nine other species. In 1894 Mr. Mac Gillivray described two 

 species of Nothochrysa ; and in 1901 Mr. McClendon described a 

 new species from Texas. Thus up to date Ave have fifty-five names 

 for the Chrysopidse of the United States, proposed by twelve persons. 



Classification. 

 For a long time the genus Chrysopa covered all the forms. 

 Gradually it has been split up, and in this paper our species are 

 distributed in six genera. Two of these are new. Most of the 



TRANS. AM. ENT. SOC, XXIX. APRIL, 1903. 



