172 THE entomologist's record. 



Halifax, were small (26mm.) but otherwise very like the Lapland 

 specimens. 



I also exhibit some other species of the genus rliii/aujihcoiiiiy — 

 rinfaiin'ar, the var. iiiier/ii taken this year in Spain, a very fine form of 

 /lippot/ior, and some very large, finely coloured alciphroa var. nordiKs, 

 taken this year and last in Spain. Mr. Tutt has kindly lent me his 

 drawers containing this genus. The pJilaeas would probably att'ord a 

 fuller disquisition than I have ventured to give, to anyone who studied 

 them more minutely, whilst the other species are definitely beyond my 

 grasp. The parallel variation of the several species is remarkable. 



The Early Stages of Colias edusa. 



By J. W. H. HARRISON, B.Hc. 

 On September 24th I got a fine female of ( nlias c/Ikso ab. helice. 

 AYishing, if possible, to rear a series from the egg, I enclosed the 

 insect over a growing plant of Dutch clover {TrifoUum rcpem). On 

 the morning of the 25th I was delighted to find that about 30 ova had 

 been deposited. On the three following days I kept watch on the 

 insect, and found that the ova were deposited about 11 a.m. to 

 11.80 a.m. with unfailing regularity. They were all laid either upon 

 the underside of a leaf or upon the petiole of the leaf. In the act of 

 ovipositing the female grips the edge of the leaf with her feet, and 

 curving the abdomen round deposits one, two, or three ova, and then 

 moves to another leaf. This female laid about 80 ova. Taking the 

 average of about a dozen females I have had at various times, I should 

 say about 65 or 70 was the usual number. I kept most of these eggs 

 but some were given to two friends. Mine were kept in a room facing 

 the south, and hatched on October 2nd, 3rd, and -Ith. Those I gave 

 to one friend were kept in a room with a north aspect, and hatched on 

 October 11th. A few I gave to another friend were kept in a cold out- 

 house, and exposed to the frosts of October. At the beginning of 

 November, these, though apparently fertile, had not hatched, so they 

 were removed to a warm kitchen, when all, without exception, hatched 

 during the first week of November. 



Egg. — The egg is shaped like a ninepin, and is, in form, not unlike 

 those of I'ieris rajiaeund Lrplosia sinaiiia. While not so elongated as those 

 of the latter, it is more so than those of the former. Its length is -ymm., 

 and greatest breadth about one-half that. It tapers towards both 

 extremities. To the naked eye it appears to be finely and regularly 

 ribbed longitudinally. It presents a great difference, hoAvever, when 

 under the microscope. The longitudinal ribs seem to vary from about 

 12 to 15. These ribs are very far from being regular, sometimes 

 coalescing close to the base and then separating. In one example I 

 had, I counted 15 ribs, and the 5th and 6th, 10th and 11th, 15th and 

 1st, coalesced at about one-seventh the distance down from the apex, and 

 thence continued as one almost to the apex. Transversely, there are 

 also ribs, not so strong as the others, and not at all continuous, as they 

 terminate in both directions by merging into those placed lengthwise. 

 The space between the two series of ribs is very finely punctuated. 

 This punctuation is very iri-egular. At the apex the ribs degenerate 

 into a series of irregular cell-like spa,ces. Similarly, one ovum which 

 I detached, and so arranged that I could examine the point of attach- 



