NOTES ON LIFE-HISTORIES, LARViE, ETC. 277 



with that of the ova of the Noctuids proper, so that the ovum looks 

 smooth to the naked eye, hut the markings are similar — 8G to 10 

 longitudinal rihs, slightly raised, with transverse dissepiments equally 

 distinct, giving a honey-comhed appearance. The micropylar area is 

 slightly llattened, and marked with irregular divisions, the rihs com- 

 mencing -075 mm. from the pole. The ova were infertile. 



Aventlajle.iula. — The ova, laid July 80th, were scattered on twigs 

 and lichen, and were pale yellowish-brown, changing to reddish-brown 

 in a few days. They form rather more than a hemisphere, and the 

 transverse diameter measures -545 mm. Eight primary ribs arise 

 from near the micropyle, and two secondary ones between the primary 

 at 'lOB mm. from the pole, so that there are 24 ribs visible on the 

 edge at the equator. Both primary and secondary ribs are prominent, 

 sharp-edged, and undulating, with depressed furrows crossed by trans- 

 verse dissepiments intervening. The micropylar area is "OHS mm. in 

 diameter, somewhat depressed, and marked with a pavement of 1) or 

 10 irregular divisions. — W. S. Eu^ing, B.A., M.D., F.E.S., Buckerell. 



T/u'stor ballus. — The egg is almost spherical in shape, laid among 

 the long hairs on the upper or underside of a leaf. The empty egg- 

 shell is pearly white in colour, exceedingly delicate, thin and trans- 

 parent, covered over with a very fine, close, and conspicuous polygonal 

 network, sometimes G, 5, or 4 (and even occasionally 3) sided. The 

 micropylar area, at the apex, is rather more finely reticulated. The 

 larva escapes at the side or apex. [Described under a two-thirds 

 lens, April 30th, 1898] . Mr. H. Rowland Brown sent the eggs on 

 April 3rd, from Plyeres, and said : "I watched a female T. ball us lay 

 these ova to-day (April 3rd) on Lotus ? hisjii.lus.'' I was in the 

 south of France myself when the eggs arrived, and the larvte had 

 hatched and died before I saw the eggs. 



Thais iHinina var. )iic(h'sica'ttc. — Almost spherical, of a delicate white 

 pearly hue with a faint bluish iridescence. The shell at first sight 

 looks almost smooth, but is irregularly marked with the finest possible 

 polygonal reticulation. A scarcely depressed, faintly ochreous, unrc- 

 ticulated space at the apex marks the micropylar area. The larva 

 escapes at the shoulder of the egg, some distance below the micropylar 

 area. [Described under a two-thirds lens, April 30th, 1898] . Mr. 

 A. H. Jones, who received the egg from Hyeres, laid on ArisUilochia 

 jtistahwhia, forwarded it to me on April 6th, 1898, whilst 1 was from 

 home. This also had hatched before my return. 



Erchia epistj/<i>i('. — Colour pale yellowish, in shape somewhat re- 

 sembles an orange, being almost spherical, but flattened at the base 

 and slightly so at the top. There are 30 vertical ribs, which become 

 united together somewhat irregularly (in twos, threes or fours) towards 

 the apex ; these are very distinct, rounded at their summits, and 

 crossed by very faint transverse ribs, which are very numerous. The 

 base is comparatively smooth, but the micropyle could not be made 

 out under the low power with which we had to make the examination. 

 [The egg was gently squeezed from the oviduct of a female captured 

 by Mr. H. Edwards, at Grasse, on April 20th, 1897, and described 

 under a two-thirds (used as a hand) lens, the same day] . — J. W. Tutt. 



:iaOTES ON COLLECTING, Etc. 



Orygia G0N08TIOMA IN Kent. — While searching the young oaks in 

 woods, at Bexley, I came across a batch of ova of Orgijia (jonostujma, 



