S4 TliE ENTOMOliOGIST's RECORt). 



flattened sphere, finely reticulated, and laid generally singly on the 

 upper side of the leaf, but sometimes on the stalk or flower-bud. I 

 had ample means of seeing that this was the only plant selected. 



I captured one or two females, and having dug up a plant of the 

 rock-rose, confined them over it, with the result that I have just taken 

 from it twelve ova, from which I hope to get larvse, and rear. 



[Frey says of the larva of this species: — " Caterpillar polyphagous. 

 I bred it many years since on Ocnista tinctoria, Sjiartiiiin smiiariion, 

 Ci/tisus, OuDhri/c/iis, lluhus f .' ), Sctluiii pcduxtrc are also quoted. 

 Certainly on Vacciiiiniii vitis-i(la<'a, also on Hiiiantheiuuw vuh/arc'' Ed.] . 



SCIENTIFIC NOTES AND OBSERVATIONS. 



Types of oenera. — From some observations in the J^ntoiii()l<i(iist\s 

 Record it might appear a^ though the types of genera given by me were 

 arbitrarily chosen. If the student will read my argument as to the 

 type of Hailrna, as published in the E]it()m<)lo((ist\s llccttrd, I think he 

 will come to the conclusion that this is not so, and that the search 

 after a typ3 is conducted upon certain rales applying to the use of the 

 generic title in literature. From the use of the name, according to 

 priority, from its restrictions and extensions, from the reference of the 

 original species by subsequent authors, the type becomes revealed. 

 Errors in this search will arise from ignorance of the entire literature. 

 They are also possible from uuacquaintance with structure. So that 

 the best authority will be the one who knows the most facts of the 

 most species, and has read the most books upon the subject. I take 

 the opportunity of protesting against Mr. Meyrick's improper use of 

 Hiibner's generic titles, and this from the view both of the lepidopterist 

 who has a knowledge of literature and of the lepidopterist who has a 

 knowledge of structure. Mr. Meyrick's idiosyncrasies will add to the 

 already overburdened task of the man of letters, who will find much 

 to undo under the rules for the application of generic names, while 

 they seem certain, in many cases, to be set aside by the student of 

 structure. Mr. Meyrick's speculations as to the affinities of his generic 

 groups are, as I have said, largely in the air, lacking the support, 

 which is so necessary, of a knowledge of the structure in the difi'erent 

 phases of the life-history of the species. — A. Radcliffe Grote, M.A., 

 Eoemer Museum, Hildesheim. 



Is MiNOA MURINATA (eUPHORBIATa) DOUBLE-BROODED ? In J\llt())H., 



vol. iii., p. 347, Mr. Merrin asks whether Mimm mnrinata 

 (euphnrhiata) is double-brooded in England, and records that towards the 

 end of May he took several specimens, and in June others that were 

 faded and worn ; whilst on August 81st he took a single specimen 

 quite fresh. The question never appears to have been answered, and 

 it is probable that an occasional specimen is all that occurs of this 

 brood in Britain. A second brood, however, is quite usual in those 

 localities in which I have met the species on the Continent. I found 

 it in early August, 1894, at Courmayeur, a fortnight later in the same 

 year at Aix-les-Bains, and again fairly plentifully at Bregenz, in the 

 middle of August, 1895. Near Aix-les-Bains it evidently fed on box, 

 acres of this shrub forming a dense scrub on some parts of the hills 

 about Gr^sy-sur-Aix, — J, W. Tutt, June, 1896. 



