130 ntOCEEDl^GS OF THE XArioyAL Ml'SElM. vol.xx. 



h^. Lob«'8 of fjircula broa«l»r \\v,\\\ Ion;;: extremity of 8ul)^«uit;il jilati' 

 of iiialf ••li'vatfd and C(MiHi(l»'ral»ly r«'<Mirv«'«l; int»'rval b»'tw«'«'ii nn-so- 

 stfinal lobrs of luab* uearly or quite twice as loij<; as broad. 



1<»5. fejcanuH (]». 324). 

 e'. Sub<;enital plate of male distinctly narrower than long, often narrowiuj; 

 apically (21. I'lebejijs series). > 



/'. Hind niar<;iu of pnuiotuni distinotly though obtusely angnlate; inter- 

 val b'twecn niesosternal lobes of ieniah' at least lialf as long a^ain a> 

 broad: apieal portion of anal cerei of male distinctly and sharply subate 



<'Xteriorly 106. iilrhi-Jux (|». :VJVy). 



/-. Hnul margin of jironotum rarely angulate, sometimes emar^nnate: 

 interval between mesosternal lobes of female ( where known ^ subtpiadrate; 

 apical ]»orti(»n of anal eerci of male exteri<»rly tnmid or ]>lane. 



«/'. l'osteri(»r margin of ]»ronotiim distinctly cmar^inate in the middle: 

 tegmina widely separated; eerci of male elongate, surpassing the supra- 

 anal i)late; suligenital jdate l»roader at base than apically, its apieal 



margin regularly rounded and even 107. f/rarHh (p. 327). 



g-. Posterior margin of pronotuni obtusely angulafed or rounde I trun- 

 cate, with at most but feeblest siun of any emargination : tegmina attin- 

 gent or overla]»[)ing: eerci <>f male relatively biief, not snr])assing the 

 snpraanal plate: subgenital j)late not broader at base than apically, its 

 apical margin angulate or tuberculate. 



/r. Tegmin.i shorter than pronotuni: posterior margin of pronotum 

 rounded trunc.ite with feeblest signs of mesial eniargination : Cvrti of 

 ntale curved slightly ujtward: subgenital i)late •■ndiug in a blunt 



rather coarse tubercle lOS. hio))8 (p. 321M. 



h-. Tegmina longer than pronotum: posterior margin of ]>ronotiini 

 distinctly though very obtusely angulate; eerci of male curved feebly 

 downward; subgenital ])late ending in a delicate ])ointed tubercle. 



1(>J>. marijiuatus (p. 830). 

 A-. Tegmina nearly or quite as long as, or longer than, the abdomen ; furcula usually 

 well developed, generally at least a «iuarter as long as the sui>raanal plate, but some- 

 times obsolete. 



b'. Cerci of male rapidly expanding from the base toward the middle, as a whole 

 broad antl short, tlabellate, rarely twice as long as broad, not expanded apically 

 (2. Flaltellifer series). 



c'. Ccrci of male twice as hroad in broadest as in narrowest portion. 



d'. Subgenital jdateof male with adistinct though minute in<lepeiuleut ' apical 



tubercle 4. occidenialix {]k Hoh 



d-. Subgenital plate of male with only an obscure trace of a]»ical tubercle. 



5. (Uiieatus (p. 147). 



C'. Cerci of male with no striking ine»iuality in breadth.. 6. flabetlifer (p. 14S). 



b-. Cerci of male tapering from the very base toward the middle, rarely equal in 



basal portion - generally long and slen<ler antl rarely as little as twice as long as 



broa<l. 



e . Cerci of male beyond the middle either etjual or tapering, the tip usually 

 slender or acuminate, never bifurcate (in M. titer it enlarges feebly). 



rf'. Furcula of male developed as large llattened lobes, about half as long as 

 the snpraanal ]date and exi optionally broad, but apically narrowed by the 

 considerable excision of their inner side : subgenital plate not elevated apically 

 above the lateral margins i^'S. Bowditchi series). 



' That is, not formed by the culmination of the more or less ]>yramidal form of the 

 subgenital plate. 



- In rare instances it expands slightly from the extreme base, but it is then greatly 

 expanded apically. 



