( a6ci ) 



, oculis rubro-puiiiceis, dorfo luteo gibbofo^ cauda itidem lutea, fex 

 ftriis five lineis atris, vefparurn more notata, alulis ad menfuram cor^ 

 poris paulo longioribus, perquam pellucidis, ad diem clarum iridis in 

 modum pulchre verficoloribus^ lineis tamen j vel 6, tanquam nervulis 

 atro-purpureis diftinais. Dorfum & caputpilis quibufdam hinc inde 

 fcatent. Inter oculos corpufcula duo rotunda eminent,, quibuj pili tan- 

 quam barbulae quzedam inhaerent, forfan pro temperando aere acetofo, 

 quem hoc modo tanquam naribus attrahunt. ^ Probofcidem non ha* 

 bent, fed ejus loco to ^§vov t/, fefpongiofum, hians inftar aris Muraena?, 

 quo ad latera vafis vapores exfugere, fimiilque hoc fudu tenaciter ad- 

 h^rere poffint. Sub abdomine venter totus iuteus eft. 



Hujus inventi feu obfervati perquam curiofi laus egregio viro D. Chr, 

 Mmtz,eUo debetur. 



Upminfterj June 24. 1702. 



SIR, 



IReturn you tny hearty thanks for your kind Anpwer to my Letter ^ ivhich 

 Debt Iwouldhave paid hefore now, but I ivas iviUingto give you the befi 

 Hiftory I could of Gnats, in anfwer to your Re^ueft. But after thm much De" 

 lay^ and many careful Obfervations^ I find I Jhall fend you but an imperfecl 

 Hifiory ; their Generation being -very various beyond all expeBation, as Ifind 

 bydaily nevj Difcoveries, Howe-ver, he pleafed toaccept ofthe truefi and mofi 

 compleat Account ivhich as yet I am able to give you. 



Tbe firfi thing 1 jhall fpeak of jhall be concerning the Aureliar or Chryfali- 

 des of Gnats. Of which thofe that have faUen under my Obfervation may be 

 divided into two Kinds : One without Club-headsy and with Legs ; the other 

 ivith Club-heads, and Tvithout Legs. 



O^ the firfi Kind I never faw but one Species, which I have here enclofed 

 fent you a Specimen of marked (Nr. 2. Lr. b.) This Aurelia, befides fix 

 LegSy hath a Tail confifiing of three Feathers • each of which Feathers hath 5 

 Colours in it, viz. the End jvhitijh, next black, and next the Body brown^ 

 like the refi of the AureliaV Body. The Head is globofe. The JVings lie in 

 two Bags on its Back i above cne half of which are crifped up, jufi as Women 

 double up or crifp their Linnen when they hem it. The firfi Aurelia which I 

 took of this kifidy was in an infiafit cracked on the Back, and dejerted by its 

 Gnat • which fo foon flew away, that I could not catch it j only it kft its 

 Aurelia'^ Skin in my Hand. 



Juft by the Aurelia, I have in the Specimen placed one of the very Gnats 

 which came out offuch another Aurelia, marked Nr. 2. Lr. c. The Gnat was 

 . abortive, which ts the redfon it is no better gumm^d to the Faper. 



Whence thefe Aureli<e came^ whether from Worms, or what elfe, I cant 



