OF LANCASTER COUNTY. 



555 



flava Scop. 

 Myrmeleon Linn. "Ant-lions." 



gratus Say. 



obsoletus Say. 



immaculatus De G. 

 ASCALAPHUS JFab. 



hyalinus Lat. 



quadripuuctatus Brm. 



limbatus Brm. 



Panorpina — •' Scorpion-flies." 



Panorpa Linn. 



rufescens Bmb. 



venosa Wstio. 



debilis Wstw. 



maculosa Ilag. 

 BiTTACtrs Lat. 



stigmaterus Say. 



occidentis Wlk. 

 Merope Nwm. 



tuber? Nwm. 



Phryganina — "Caddice-flies." 



Neuronia Fell. 

 semifasciata Say. 

 postica Wlk. 



Phryganea Linn. 

 cinerea? Wlk. 



LiMNOPIIILIDES. 



LiMNOPIIILUS Lch. 



intcrruptus Say. 

 Enoicyla Ram. 



subfasciata Say. 



lejiida Hag. 



Leptocerides. 



Leptocerus Lch. 



niger Linn. 



variegatus? Ilag. 

 Setodes Bam. 



candidus Hag. 



Hydropsychides. 



Hydropsyche Pic. 

 l)lialerata Uag. 



POLYCENTROPUS Cur. 

 lucidus? Hag. 



Khyacophilides. 



CniMARRHA Lch. 

 aterrima? Hag. 



So little attention has been paid to the Neuroptera of Lancaster County, that the 

 foregoing catalogue must necessarily be very imperfect in many respects. In the first 

 place, it may not include all the insects, belonging to this order, that are found within 

 the limits of the county; and in the second place it may include some species that arc 

 not localized here, but in the territory immediately North and South of its boundarj,-. 

 The county, however, having the Susquehanna washing its entire Southwesteni 

 margin, and being moreover permeated by the Conestogo, Chiiiucsalunga, Octo- 

 raro, Pequea, Cocalico, Hammer, Mill, and Conoy creeks, as well as a multitude 

 of minor streams; and as the largest portion of these insects undergo their transforma- 

 tions in the water, and in fact pass their whole larm and pupa states there, it will be 

 evident that a thorough entomological canvass of the county may develop a.s many 

 more species than are here enumerated. This list is based upon the classification of Her- 

 man Hagen, in his "Synopsis of the Neuroptera of N. America," and publislied by 

 the Smithsonian Institution, at Washington city, D. C The future local student of 

 Neuropterology in Lancaster county, may find this list of some advantage in classify- 

 ing his collections. 



ORDER HYMENOPTERA. 



The insects belonging to this order, are known, in part, under the common names of 

 Saw-flies, Gall-flies, Cuccoo-flies, Bees, Bumble-bees, Wasps, Hornets, Yellow-jackets, 

 and others. They are distinguished as having four membranaceous wings, that are 

 ramified by a number of veins, forming cells, but not assuming the appearance of net- 

 work, as in the Neuropterfc—the anterior pair being larger than the post^^rior pair. 

 Mouth composed of mandibles, maxill(S; labrum and labium, the latter of which is usu- 

 ally elongated, and, together with the maxillai, forms a kind of tongue, or sucker, capable 



