Mosquito AiDioyaiicc ot Bloclclicatli. 57 



I know (if no rtfords of mosijuitoc-s fntm cither (Jrecnwich Park or 

 Hlackhcatli. Two .sjR'cii-s occur in al»uii<liincc in some of the (I'xks 

 (Lonchm and AIIkti), nuniily, Culex pii)iens^ L., and Ciilex dormlis, MeiL'<'n, 

 and from the hitter d(^>ck I have re<.'eived Culer pulcritaraia, of Rondani. 

 Culex dorsalis is a vicious biicr, and I iK'lieve occurs all down tin- river. 

 Culej- j ' also hitcs severely at times, the \)'iU-h l)ein<; fullowcl hy lar/f 



red ci-d ;^ :is Kitchcs, I am afnid withdUL invest itratioii on the sp ■•. I 

 cannot ])ossiltly iielp yuu further. 



I am, etc., 



I'UKI). ^■. TllKOHALD. 



BOBOLGH OF GrEENWICU 



Pluuc Health JDEPARTMEhT, 



Town Hall, Greenwich lload, S.E., 

 12th November, 1901. 



Dk.vu Siu, — Pleji.<;e accept my best thanks for the itifonnation yon 

 have so kindly supplied to mt-, and I will endwivour to ohtiiin a few 

 specimens of the insects referred to and submit them t ) you if you are 

 aj^rewible. 



I am, etc., 



E. (;. A-N-Vis. 



Britisu Mcsevm (Nat. Hist.), 



Cromwell lload, S.W., 



2iat NovemUr, 1901. 



To Dii. K. G. A.vxrs M.R.C.S., etc., 



Medical Ot!kxr of Health, Greenwich. 



Dear Sik, — I shall be plejised to examine the noxious flies tiiat are 

 causing annoyance in your di.strict whenever you care U) .send them here. 



Yours, etc., 



Fred. V. Tiikohald. 



BoBOCGB or Greenwich 



TcBUC Health I 



2Gth ;. -tl. 



To V. V. TllKOlJALI), Hs<j., 



Hriti.sh Miuseum (Sal. Hist.) 



Dear Sir, — Yours of the 2l8t to hand, for which I thank you, and 

 I am endeavonrini: to obtain specimens of the insocli? referred to, but they 

 do not sietu to be so prevalent in the colder wcath<r. 



I shall, however, be pleaaetl to avail mjrself of your kind ofTcr when I 

 am in a position to do so. 



I am. etc., Youn«, 



E. (J. Axxi.s. 



