SCIENTIFIC NOTRS. 1-55 



by the 15th are about iin. long, but by mid-May aie practically fuUfed. 

 They are to be found on ('onvulri(li(s (Porritt). 



22. — ^The larvte of Aciptilia tetradacti/la are to be found from mid- 

 April to mid-June on wild thyme. They are difficult to detect and 

 readily drop (Bankes). 



23. — The larvje of Aciiitilia baliudavtyla are to be found at the end 

 of May on the top shoots of marjoram, i}ri(ianum cidgare : they bite 

 practically through the stems near the tops of the plant, causing them 

 to hang down and wither, which is the sign betraying the presence of 

 the larvae ; they eat large holes through the leaves as well as portions 

 out from the edges (Grigg). 



24. — The larval' of Aciptilia sjiilodactifla are to be found feeding on 

 Marruhium nd'/are in late May and June ; they are to be found again 

 in late August and September, a second brood of imagines occurring 

 again in late September and early October (liuckler). 



25. — The larva? of LeiuptilHn tephradavtylxs are to be found through- 

 out May feeding exposed on the leaves of golden-rod, the pupa being 

 attached by the anal segment to a stem or leaf of the foodplant 

 (Porritt). 



26. — The larvae of Miinafseoptilus fuscns are to be found during 

 May and the first half of June feeding on speedwell in more or less 

 exposed situations —banks, etc. (Porritt). They are generally found 

 half-hidden among the flower- buds. 



27. — The larviB of Miinaeseoptiliis bipiinctidactyla are to be found in 

 mid-May working up inside the young shoots of Svabiosa roluoibaria, 

 S.arroisisiind S.sHccixa : the infested portions of the plants are concealed 

 by the healthy shoots, and the whereabouts of the larva are not to be 

 discovered without difficulty (Barrett). 



28. — The larv* of Maranmarr/ia phaeodacti/la aive to be found readily 

 by searching plants of restharrow {Ononis) at the end of May and 

 throughout the first half of June ; they are moderately exposed, and 

 mostly towards the upper parts of the plants. 



29. — Thelarvseof O.vyptilus hcterndacti/la are to be found on Teuiriuin 

 scartHlonia during May ; they eat the stem about half-way through 

 about liin. from the bottom of a shoot, causing the part of the plant 

 above to bend down, and soon this withered portion on which the larva 

 feeds is overtopped by the neighbouring plants (Greening). 



80. — In the second week of May the larvae of Platyptilia isndactyla 

 are to be found in marshy places mining the stems of Seneciu aquatirus, 

 feeding in the thick main stem of the plant, in which each hollows out a 

 space in which to assume the pupal state (Barrett). 



31. — In the first fortnight of June the larva? of Platyptilia ochro- 

 dactyla are to be found in various stages of growth mining in the stems 

 of fanacetiim ndyarc, the mouth of the mine being generally between 

 the axil of a leaf and the stem, with a few silk threads spun from one 

 to the other, among which the blackish frass gets entangled and 

 becomes conspicuous (Buckler). 



SCIENTIFIC NOTES AND OBSERVATIONS. 



HoMEYDEw. — An excellent paper- on the " Aleyrodids of California," 

 by Miss Florence E. Bemis, will be of great value to all students 



* Procccdinf/s of the United Statea Nat. Miiseuiii, xxvii., pp. 471-507, pi 

 xxvii.-xxxvii. 1904. 



