I'j'J oRDi.K iivmj:noptera. 



The "wtM diffrp rnn^i.lrrnMy Jwilh in mnrklnir* nml Mir. Tlielxirrr ofthc frmiilp consist* 

 of live ptrrrs : the two t.utsUlc pieces are grouVid for the reeeptKin and nupix<rt «.f the 

 Inwr pierr^, furniing a hollow tube when rloAcd toRetht-r ; the Inner pi«r«-s are ncetlles, 

 with which the trunks of trrrs are plercctl for the purpow of clrposltlng the cjcrs. Their 

 yoUDK an- sruh-like larvie wliirh are wimkI eaters, and destroy Ibrest tree* by extenilve 

 burrowing in the j{rr«-n s<«lid niiittrr. Pines, elms, luaples, butU>nwcMxl and fruit ire** are 

 all Aubjfct to attacks of the uructridu*. 



Uaocsaca ALBicoaxis ( Fabrlclus). ( Plate xxxli, fig. 3.) 



Kkmai-c : r<d<>r iNrp bluf liliick : stminiatn three, sitiiatrd l*ehiml the antennir in a 



trianKular fomi ; head continently puncturv^l ; antennn- rath«-r lone, white, the \m»e 



and ixtreniily dark Imiwn or black. l{<-hind the eyes tlure are two oval cream -colored 



spots. Thorax pubes<-ent, puncturetl,and dwply impr«-ss«d with a Assure ninninK in a 



circular manner from the Ijase of one forewing to the other, and also extending down 



the basti of the wings, leaving an elevation with its point direeleit l>ack«ards. 



Alxlomen cylindrical, sm<KJth, shining, marked by a lateral oval white spot, and 



terminated by a lanrcform ai>i>endBKe. I.eg> black, with white joints. Length one 



inch : ovi|>ositor, nearly three fourths of an inch ; expanse of wing, nearly 2 inches. 



Thl> insect resembles the female sirux, but may Ijc distinguished at once by its white 



markings. 



Tremex coLiMBA. ( Platc xxxli, flgs. 1, 2.) 



Trbmcx ( Jurinc). Sibex ( Linnasos, Drurj). S. cixctus ( Drury). S. rE.<«.<f8TLVA.!Cict-8 (Dcgecr). 



Ptgion Tremes ( Harris^. 

 Head and thorax yellowish brown, thick : antenna* of the length of the thorax, and made 

 up of sixteen joints : aUlomen bluish black, cylindric, ornaniente<I by six rings, the 

 last interrujited at the median line of the Ixuly ; extnniity yellow : ovi)N>si(or short 

 and stout : wings opake brown and clouded : legs and feet yellowish ; tibia armed 

 with a spur. 

 This in.sect is common in Allwiny county. In comfMiny with the Pimyln lunator, multi- 

 tudes rrs«irte«l to a haifgrown maple tree In the Iwick jani of the Old State Hall for the 

 purpose of de|«>siting their eggs. So completely was this tree riddled with holes when the 

 Insects escni>*tl after transformation, that it died in a few years, when it was found to be 

 jM-rfectly mined through and through. 



I have taken this siKcies also in Mnrvland, so that it apin-nrs to W widely di.'-tributrd. 

 The ovi[K»itor is nearly half an inch in bnRth ; the In-dy, an in»h and a half; the male 

 bss. but it fre«iuently hnpiM-ns that the female is small alw* : eX|xinsion of wings, two and 

 a cjuarter inches. Their wants are not confined to the maple tree : they bore or pierce the 

 elm and buttonwood, which are thus killed in process of time. When a tree is resorted to 

 for till' lb |».Mii..ii ,,r iliiir t^ggs, it furnished the lar>'a- during every se«s«'n t>f the year 



