48 



Of the Micropterygo-Sphingid stirps which Mr. Tutt has worked 

 out in the early volumes of his "British Lepidoptera" I have no type, 

 either of the Anthrocerids, Psychids, Lachneids, Saturniids, or 

 Sphingids; but of the second liat-egged stirps — the Eriocranio- 

 Geometrid — we have — 



Crainbus chrysoiiuchellus. — Illustrating the Crambids. For fiat 

 eggs the longitudinal ribs are unusual, the transverse depressions 

 cross the ribs and are coarse and indefinite. These eggs were sent 

 to Dr. Chapman by Lord Rothschild. 



Phibalocera cjuercana. — Laid on oak leaf; empty shells only shown. 

 The network is stellate and the cells triangular. From Dr. 

 Chapman. 



Halia vaiiaria. — A typical Geometrid egg, laid on gooseberry stem. 



Lomaspilis viarguiata. — A Geometrid, laid in rows on paper. 



Melanippe sociata. — On Galinm verum. 



Ematurga atomaria. — Laid in box. 



Anticlea derivata. — On rose stipule. 



Hibernia marginaria. — From Mr. Montgomery. Spaces between 

 the ribs are composed of indistinct depressions. 



Emomos qiiercinaria. — Laid on box. Larva is a general feeder. 



Eubolia cervinata. — These ova are scattered broadcast, which is 

 unusual for a Geometrid. Note the depressions on both sides of 

 the egg. From Mr. Montgomery. 



Acidalia holosericeata. — A local species from Mr. Griffiths, of 

 Clifton. Eggs of this section of the genus Mr. Tutt calls "slipper- 

 shaped," and are laid loose. 



Ennomos fiiscantaria. — A very specialised egg and quite unlike 

 the typical Geometrid ; they are laid side by side, of a brick-like 

 shape, and the margins at the micropylar end are corrugated. 

 From Mr. Prideaux, of Reigate. 



lodis veriiaria. — Another specialised egg, and I should say unique. 

 It exhibits a very peculiar form of deposition, the eggs being laid in 

 rouleaux of five or six on a twig of clematis. The larva emerges at 

 the side of each egg in the same position. There are minute pits 

 on the lateral surfaces. Specimen sent me by Mr. Prideaux. 



These complete my list of the available flat eggs, and I will now 

 commence with the Hepialo-Noctuid or upright eggs, finishing with 

 the Rhopalocera. 



Cossits ore. — Mr. Tutt informs me that this egg illustrates well 

 the point at which the flat become upright eggs. This is an Ameri- 

 can species which I photographed specially for him, to show the 

 varying scale of size of the network, and is very different in 

 structure to our Cossid {Cossi/s ligtiiperda) egg. 



Hepiahis. — Species unknown ; is a type of the loose, oval, almost 

 spherical egg, which is presumed to be the generalised form of egg 

 for this stirps. These are deposited loosely .among herbage, and it 

 is noteworthy that the egg-shell changes from white to black. From 

 Mr. Prideaux. 



