49 



Nola cucullatella. — Characteristic of the Nolidce, Dr. Chapman 

 describes this as unique, being " apparently an upright egg with an 

 oval outline." The upper and inner margin of the zone of ribs 

 stand out as in the Vanessids. 



Nola ciiciiIlateUa. — Empty shells showing how the larva emerges, 

 leaving a lid in the centre. Specimen sent me by Dr. Chapman. 



Pygoira bucephala. — Represents the Notodonts. Laid on oak- 

 leaf, the micropylar area has a reticulated surface, the lower zone is 

 of a pale blue colour having the appearance of glazed porcelain, 

 and slightly pitted with minute holes. The basal zone is dark brown 

 in colour. 



Notolophus {Orgyia) antiqiia. — Represents the Liparids. Hatching 

 takes place irregularly and spreads over a long period. Eggs are 

 invariably laid on the cocoon, and instances of parthenogenesis 

 have been supposed to occur in this species. 



Spilosoma menthastri. — Represents the Arctiids. This shows the 

 spherical eggs in outline. The surface of these eggs is reticulated. 



Polia cJii. — A typical Noctuid egg, hemispherical in shape ; speci- 

 men given me by Mr. Moore. 



Faiiolis pi7uperda on Finns sylvestris, from Mr. Tutt. 



Agrotis agathina on Erica teiralix, from Rev. C. D. Ash, Selby, 

 Yorks. The micropyle is well defined ; the surrounding cells are in 

 the form of a rosette. 



Heliopholnis popularis laid loosely. The network is quite superficial ; 

 the transverse ribs are distinct lines extending over the surface of the 

 longitudinal ribs. The base of the egg has an uniform network, with 

 no visible point of attachment; this is no doubt due to the eggs 

 being deposited broadcast. The micropylar structure is similar to 

 that of Agrotis agathina. 



J-fadena genistce. — A typical Noctuid. The dark markings are due 

 to the state of maturity of the larva inside. 



Gotyna ochracea {flavago). — Superficially is unlike a Noctuid egg, 

 owing to the way in which it is laid ; it is pressed out of shape, but 

 has all the characteristic structure on close examination. 



Thyris fenestrata. — -A fine upright egg, which Mr. Tutt informs 

 me cannot belong where the authorities have placed it. Dr. Chapman 

 sent me these specimens. 



Rhopalocera. 



These naturally belong to the upright eggs, and are specialised in 

 various directions. There is the long fusiform or ninepin- shaped 

 egg of the Pierids, the barrel-shaped egg of the Nymphalids, and 

 the Echinus-like eggs of the Lycsenids. Of these I exhibit — 



Gonoptcryx rhamni. — Laid separately on twigs of buckthorn. 

 This form of egg is common to the Pierids. Their bases appear in 

 most cases to have flattened out and spread slightly ; this probably 

 would not occur if the eggs were laid free. Note th(_' dottt^d trans- 

 verse markings. 



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