524 Mr. C. L. Withycombe's Noles on 



male pairs laterally with the female exactly as in most 

 moths. After about three to five minutes the female is 

 left with a small white spermatophore attached to the tip 

 of the abdomen. This she immediately devours, so that 

 in no case have I secured one perfect for examination. It 

 is apparently spherical, but slightly lobate. Eggs are laid 

 at night, often only a few hours after pairing. 



Of the internal anatomy it may be noted that in the 

 imago the food reservoir is connected to the oesophagus by 

 a rather long, narrow duct. The Malpighian tubes, eight 

 in number ( ? sometiines seven), are colourless in the larva, 

 but pigmented brown, except anteriorly, in the adult, as in 

 Osmylus. Salivary glands are simple and recurrent as in 

 Hemerobins, but at their ends, just behind the head, have two 

 short branches. The cement gland (Plate XXXIX, fig. 16), 

 developed in the female, is of long oval form, with a short, 

 slightly swollen duct. It probably serves in Sisyra as the 

 silk gland. In the male, the testes are enclosed in one 

 yellow oval scrotum, as with Osmylus, but the two vasa 

 efferentia come off from this ventraliy about the middle, 

 or somewhat posteriorly. Vesiculae seminales are large 

 and much lobate, but of slightly different form from those 

 of Osmylus. With the exception of these points, the 

 anatomy follows the general Neuropteroiis type. 



Family III. HEMEROBIIDAE. 



There are twenty-five British species. 



Psectra diptera, exceedingly rare. 

 Symjiherobius , four species. Three noted here. 

 Hemerobius, ten species. Five noted, others not 



common in the south of England. 

 Boriomyia, five species. Four noted. 

 Microtnus, three species. M. paganns described. 

 Megalomus hirtus, very rare. 

 Drejianopteryx phalaenoides, very rare. Life-history 



given by Morton and Standfuss (7). 



Small insects, generally of brov/n colour. The eggs 

 (Plate XL, figs. 12-14) are sessile, laid on their sides. 

 They are whitish in colour and of long oval shape. The 

 chorion is often pitted, and there is a knob-like micropylar 

 apparatus. A saw-edged egg-breaker is developed (Plate 

 XL, figs. 9-11). 



