NATHAN BANKS. 47 



venational ditfereiiees, wliich are evidently of no value. It is of 

 course possible that there is in the east another species similar to S. 

 omiculus, but it can only be proven by an examination of the male 

 genitalia. The new genera used in this paper have been published 

 in connection with a describe""d species in my list of Neuropteroid 

 insects from Washington, D. C, in November, 1904 ; so that Mr- 

 Needham's two genera, Spadobius and Palmoh'ms, are synonyms of 

 m y Symp hero bius, 



i\[r. Needham in the same article describes a new 3Iicromns, M. 

 Jonas, only known from the wings found in the stomach of a bull- 

 frog. The venation is like that of M. montanus, except that there 

 are but four sectors ; this point, however, is not always constant in 

 the genus, although usually so. 



BIBLIOGRAPHY. 



J. C. Fabricius. — Entomologia Systematica, ii, Hafniae, 1793, and 



Supplementum, 1798. 

 Thomas Say. — Descriptions of some new North American Neurop- 



terous Insects and ol)servations. Journ. Acad. Nat. Sci., 



Phila., 1839, pp. 9-46. 

 Thomas Say. — Appendix to the narrative of an expedition to the 



source of St. Peter's River, under command of Stephen 



H. Long, ii, pp. 268-378, Philadelphia, 1824. 

 H. BuRMEiSTER. — Handbuch der Entomologie, Neuroptera, vol. ii, 



pt. 3, Berlin, 1839 

 F. Walker. — Catalogue of the specimens ofNeuropterous insects 



in the collection of the British Museum, pt. 2, London, 



1853. 

 Asa Fitch. — First Report on the Noxious, Beneficial and Other 



Insects of the State of New York, Albany, 1855. 

 H. A. Hagen. — Synopsis of the Neuroptera of North America, 



Washington, 1861. 

 H. A. Hagen. — Monograph of the Hemerobiidse, pts. 1 and 2. 



Proc. Bost. Soc. Nat. Hist., 1889, pp. 250-260, 276-292. 

 H. A. Hagen. — On Hemerobius (Psectra) dipterus Burm., and H. 



delicatulus Fitch. Entom. Amer., 1886, pp. 21-24. 

 F. Brauer. — Beitrage zur Kenntniss der Neuropteren. Verb. 



zool.-bot. Ges. Wien, 1864, pp. 896-902. 



TRANS. AM. ENT. SOC. XXXII. DECEMBER, 1905. 



