liJO BULLETIN 10, UNITKD i^TATES NATIONAL Ml'SEUM. 



» 



II. So;5infiits with 4 or 't row* ol' tiil)erili'.s (spocifis brown- 

 ish) ScYToNoTrs Koch.' 



kk. U('|>ii!;iiatorial jmn' siirrouinltHl l»y a loiif{ oval swtllinj;. 

 HI. Lateral carina- projcrtiiij; upward.-, hornlike; back 



Hiiiooth Rii.V( iiiDiMoui'iiA SaiisBurc. 



mm. Lateral carina) horizontal: back tiiberciilate. 

 ». Pairs <.f le^rs ^ :M), 9 SI. 

 o. Se;;nients with less than ;{ rows of feebly tlevelojted 



tnJ)ercle.s HilAcoriloKl's.t — Koch. 



OIK Se<;inentH o;uh with W rows of wcll-develojted tuber- 

 cles I'oi.vDESMrs Leach. 



»iH. I'airHof leyM ^ 2b, ? 29 Hkaciiyi>ksmu.s. — Heller. 



»W. Aual segment i|uaiirate. 



p. Re])iiu:i»atorial jiores placed on mar<^in of carina'. 

 (/. Aual plate not warty; back smooth or with in- 

 distinct scale-like tubercles; first dorsal 

 plate as witle as second. 



EtiiYt Kis Koch. 



(/«/. .\ual plate with t\V(» warts; back with scale- 



likt! tubercles; first dorsal plate smaller 



than the second l'oi.vi.i;i'is J HoUman. 



pp. Repuijuatorial pores placed on the upper side of 

 carina'. 

 r. Mar<jins of lateral cariuie not serrate; aual 

 segnu'nt ending in tliree jioints. 



OxYKKsMts Humb. and Sauss. 

 rr. Margins of lateral carina' serrate; anal seg- 

 ment ending in two points. 



Stkxoma v\ Gra.'^. 

 IV. \o"sweIliug around the repuguatorial jtore, whi<h is somewhat above. 



IcosiDKSMi s Humb. an<l Sauss. 

 hh. Femora of h'gs spined; iatiTal carina' more or b-ss bent downw.irds. 



i'o.NT.XKiA (Jray. 

 aa. Repuguatorial pores on the .">. 7. X. il. 10. U, 12, 1:5, 1 1, 1."). KJ, 17, IS, ly segments. 



t>ri:<»N(;vi.()i)i;s:Mrs Saussure. 

 mill. Re])ngnatorial pctres on the 5, 7, !>, 10, 11, 12, 13, 14, 1-5. UJ, 17, IS, l!l segments. 



EiKYiiEsMis Sanssure. 

 tmaa. Kejjugnatorial i)ores only (m the fifth segment; femora armed with a sj)ine. 



Ste.nodksmus Saussure. 



' Annhjs'is of nnhyenera of SnjtimotuH. 



a. .VTiterior part of body not especially attt;uuated; legs rather short 



Sc vToxoTrs, s. str. 

 aa. Anterior part of body unich attenuat»-d; legs long; antenme slender. 



Tkachelodesmcs Peters. 

 . AiKihini.s of siibijenira of Hhacophorim. 



a. First dorsal plate normal RuACOriKnn s. s. str. 



aa. First dorsal jdate large, almost hiding head Cryptode-smu-^ Karsch. 



t PolylepxH Hollman for Pachyinim Saussure. which is ]»reoccupied. 



v^ Aniilysix of siibijcnira of Sliiioiiin. 



a. Coxa' produced into a spine Acantiiodesmis. 



aa. Coxa' not produced into a s])ine. 

 b. Body narrow; repuguatorial jxires lateral; the second dorsal plate nnich wider 



than second Odoxtodes.mis. 



bh. Body wide ; repuguatorial pores superior Stenoxia, s. str. 



