tqq [January, 



and the general resemblance to pinguis is striking, especially in the breadth of the 

 fore-wings, while it actually bears no resemblance to the narrow winged adelphella. 

 The " ferruginous " basal space in the first is nothing like the brick-red blotch of the 

 other, and the blackish fascia by which it is bounded is comparatively upright in the 

 former, while it is curved and very oblique in the latter. 



I am, therefore, perfectly satisfied that hostilis, Stephens, is altogether distinct 

 from adelphella of Zeller, and probably of F. v. E., and I think, then, there is no 

 reason to suppose that it has ever been found in the United Kingdom. Dr. Wocke 

 (who adopts hostilis as the prior name, and adelphella as a synonym) gives Britain, 

 Germany, and Southern and Eastern Eussia as localities. The former refers to 

 hostilis, the latter doubtless to adelphella.— C. Gr. Baeeett.] 



ON PAETHENOdENESIS IN TENTHREDINID&. 

 BY J. E. ELETCHEE. 



During the past season I have, as opportunity offered, continued 

 iny experiments on this subject. Thirteen virgin ? belonging to six 

 species were tried, but the names of two of the species are not yet 

 determined. They all have the power of depositing fertile ova. I 

 notice that the virgin $ of the green Nemati deposit only a small 

 number of eggs. So far, I have bred only one $ from any partheno- 

 geuetic brood of saw-fly larvae. 



A virgin $ of Phyllotoma vagans deposited between sixty and 

 seventy" eggs, but as they were distributed on only three leaves, the 

 larvae could not feed up. They ate all the parenchyma, and some 

 bored down the footstalks, but then, of necessity, perished. One leaf 

 contained nearly forty larvae. 



A specimen of IZriocampa ovata, from a this year's larva, emerged 

 on August 30th ; she deposited about thirty ova, from which the larva} 

 hatched and fed, but not vigorously, till the food plant began to lose 

 its vitality. Eventually, all perished for lack of food. 



A specimen of Hemichroa rufa, bred August 15th, deposited ova, 

 from which I obtained about forty larvae ; but the stormy weather of 

 autumn proved very unfavourable to larva? confined in a net, and when 

 I decided to feed them indoors, they were reduced to about twenty, 

 about a dozen of which have spun up. 



A small brood of larvae from a virgin ? of Nematus curtispina, bred 

 August 17th, spun up by September 20th, and three J were bred by 

 September 30th. 



Happy Land, Worcester : 

 November, 1880. 



