60 Observations on various Insects 



the species just alluded to. The variety of names it bears, and 

 the ninltitude of plants which this plant-louse inhabits, will give 

 some faint idea of the time and labour required in the investiga- 

 tion of such subjects. 

 Mr. Walker says — 



" I believe that the synonyms of Aphis pisi (the green dolphin) stand 

 thus: — ApJiis Ulmarioe, Schrank, 'Fauna Boica ;' Aphis onobrychis, Fons- 

 colombe, 'Ann. Soo. Ent. France,' x. 169-9 ; Aphis 2>isi, Kaltenbach, 'Mon. 

 Pflan.,' i. 23-11, Curt. ; Aphis lathyri, Sir Oswald Mosley, ' Gard. Chron.,' 

 i. 684. It feeds on Spircea Ulmaria, Genista Anglica, Spurtiwrn soojjarium 

 and Cytisus, Colutea ariorescens, Lathyrus odoratus and piratensis, Pisum 

 sativum and arvense, Fhaseolus vulgaris and multiflorus, Vicia sepnum and 

 sativa, and Faha, Ervum, Hedysarum, Onobrychis, Lotus cornicidatus and 

 vliginosus, Trifolium p)ratense and repens and filifornie, Ononis repens and 

 hircina, Geum tirhaiium, Epilohium moida.niim, Capsella bursa -pastor is, 

 Chcerophyllum temulentum and sylvestre, Artemisia absinthium, and Tanacctum 

 vulgare." 



The viviparous icingless female. — Large, yellowish-green, or 

 green, sometimes rose-colour or purple ; antennae brown or black, 

 nearly as long as the body. Abdomen attenuated at the tip ; 

 tubes about one quarter the length of the body ; legs long ; knees, 

 tarsi, and tips of tibiae, black or brown. 



The viviparous winged female. — Like the wingless female. 

 Thorax buff colour ; wings vitreous ; tips of the veins very slightly 

 clouded. 



The winged male. — Black or brown ; antennae longer than the 

 body ; femora and tibiae more or less yellow towards the base. 



Snake Millipedes. 



On the 21st May, 1845, I received an interesting communica- 

 tion from Mr. Frederick Kelly, of Northfleet, Kent, relative to 

 his crop of lucern, wliicli was suffering much fiom the presence 

 of large numbers of a snake millipede, which, on examination, 1 

 found was a species named Jnlus Londinensis.* The plants for- 

 warded to me had the stems deprived of the bark close to and 

 under the surface of the soil, and no doubt had been thus injured 

 by the Julus. The leaves were dead on the branches. As the 

 snake millipedes have been described and figured in this Journal,!' 

 and their liabits and economy thoroughly investigated, I shall 

 only add Mr. Kelly's own account of tlie damage done to his 

 crops of lucern by J. Londinensis. It was at tlie above date " in 

 great numbers round my lucern-plants. All I send were taken 

 this morning from two plants ; these worms [millipedes] get 

 amongst the lower shoots on the surface of the ground, some few 

 burying themselves a little below." Mr. Kelly concluded, from 

 the yellow and faded appearance of the plants, that these animals 



* Vide Roy. Agr. Soc. Journ., vol. v. p. 228, f Ibid. 



