416 FAMILY XI. STArTIYLIXID^E. 



(Id. Prosternum pi-cilonsed behind so as to reiicli the inesiistoi-uum. 

 ff. Sides of prostei-num not dilated iindei- the rox-.i'. 



h. Neck never very slender; ligula loosely fringed at tip. 

 /. Labrum \'\ith teeth. 

 ;. Teeth of labrum two in number. 

 />-. Antenn;x^ with the two basal .ioints thick, the others 

 slender, filiform; basal joints of hind tarsi distinctly 

 longer than second; length less than 3.5 mm. 



I. Gular sutures moderately separated, gradually con- 



verging and most narrowly separated at base ; frout 

 tarsi more or less dilated; surface distinctly punc- 

 tured. XLVII. SciOt'IIABIS. 



II. Gular sutures very widely seiiaratcd and nearest to- 



gether in front, thence widely diverging to base of 

 head; front tarsi not at all dilated; surface not dis- 

 tinctly punctured. Xr..VIII. Sciociiaeella. 

 7,-7,-. Antemife with the basal joints of equal thickness with 

 the otiiers, the apical ones I'eelily enlarged: teeth of 

 labrum very small ; prosternum not r.-irinate. 



III. Basal joints of hind tarsi ciiual in length to second. 



the first four joints short and snbequal ; gul;ir su- 

 tures most narrowly separated a little before the 

 middle. XLIX. Tuaciiykkcii s. 



■iniii. Basal joints of hind tarsi distinctly longer than sec- 

 ond, llic tarsi more elongate; front tarsi strongly 

 dilaled, cs|ic(ially in the maU' ; gular sutures musl 

 narrowl.^• separated at base; neck wide, almost half 

 as wide as head. Ij. ^AKAME1)0^^ 



jj. I>alirum with four teeth, the inner ones long, acute, and 

 prominent, the outer ones \er.\' small ; gular sutures 

 widely separated at base. Tlatymedon. 



//. Labrum without leetli: body very slender, finely and very 

 densely imnctate; gular sutures as in Platiimc6oii : first 

 joint of hind tarsi longer than second. 



lA. PSErnOMEDON. 



hli. Neck in our species very slender; ligula tricuspid at tip; 



laliruni with fcnr teeth. LIT. Scop.eus. 



tjg. Sides of lu-ostenunn broadly dilated under the cox;e, reacUins 



the infiexcd sides of thorax ; neck very slender. 



II. .Antenuoe distinctly longer than head; length .'!.."! or more mm.; 



hind tarsi with joints 1 to 1 gradually di^creasing in length. 



0. Form rather slender; labrum broadly rounded or subtrun- 



cate at apex, the teeth usually acnt(>; front tarsi finely 



and densely pubescent beneath. TAIL Stieici's. 



00. Form very stout; labrum sinuate-emarginate at apex, the 



(wo teeth short, obtuse; front tarsi not at all dilated, Imv- 



ing long coarse hiiivs jx'iieath; head m-bicular, the surface 



njinutely punctate or alntaceous. LIV. Megastilicus. 



