NEUROrTEEA— PLANIPENNIA— HEMEROBINA. 165 



inner margin is almost equally straight, but faintly convex. The extreme 

 tip of the wing falls in the middle of the upper half; below it the wing is 

 strongly excised, but well rounded at the tip and lower outer angle. The 

 shape of the wing, therefore, resembles closely tliat of ]\I:cromus hirtus of 

 Europe. The cubitals are, if anything, more numerous than the A'einlets of 

 the costal area, and beyond the origin of the anterior cubital vein ten origi- 

 nate from the subcosta itself in the basal half of the wing. The first and 

 second of these fork and subdivide several times before reaching the mar- 

 gin, or even long before reaching the first series of gradate veinlets, while 

 the third to the ninth are simple, either quite or almost as far as the very 

 margin. The tenth again forks close to its origin, and the outer sectors 

 originate from its upper branch, which is connected with the costa by infre- 

 quent cross-nervules. The wing is of a pale woodbrown color, the veins 

 margined with a line of dull, pale yellow, and the darker brown of the inter- 

 spaces broken frequently by a slightly paler tint, so as to give the wing a 

 minutely blotched appearance, only visible under the lens. The two series 

 of gradate veinlets are again accompanied by a slightly darker tint, giving 

 the wing the appearance of being crossed by two oblique, dusky lines'. All 

 the margins are minutely and sparingly ciliated, and similar black, rather 

 distant hairs are scattered indisci'iminately over the wing, both upon the 

 membrane and veins, but showing a certain tendency to follow the course 

 of the latter. At the extreme lower base of the wing they are seen to have 

 their origin from minute papillae, less than one hundredth of a millimeter in 

 diameter, and averaging a twentieth of a millimeter apart 



Length of wing, 9.5"™ ; greatest breadth, 4.25"°" ; breadth at base, S™""; 

 diameter of eye, 0.45"'" ; length of joints of antennae near base, 0.09"" ; 

 of middle joints of maxillary palpi, 0.075""; length of maxillary palpi, 

 0.4"". 



Named for R. McLachlan, Esq , the distinguished English neuropter- 

 ologist. 



Quesnel, British Columbia. Collected by Dr. G. M. Dawson, Nos. 36 

 and 37 of the collection. 



Subfamily CHRYSOPID^E Brauer. 



Although species refeired to Chrysopa are mentioned by Andra from 

 the rocks of Thalheim, and by Berendt in amber, the figure given by the 

 former and the study by Hagen of the material in the hands of the latter 



