NO. 1124. L'EriSloX OF TU£ MELAyorLI—SCl'DDLIl. ~ 137 



/-. .Sul»j;eiiit;il plate of iiinlc vrry nnrrow nn;l uarrowt-r npi<':illy titan the 

 extruiiie hasr of tli«' ciTci ; Hiipraanal plate on tho saiin" j^i-ntral plane 

 throughout: (-en i Klender uixl iiiut-h i)iirrow«-(l in tlu; nii«l*Ue, ^rnduully 

 inciirv«Ml. exteriorly tnniid at apex (L'l. I'leliejuM MerifH). 

 <;'. Hub^enital plate of male, as Keen from above, apically ak<;{ulate auil 



tnbereulate 1(>1». mnnjinatuH (p. 'SM)). 



«/•'. Subgenital plate of male, oh seen from abov;*, apically well rouutled 



and simple 11(1. parinynidtH t p. '.i'M). 



d*. Cerci of male apically biliircate, or with an inferior subnndian i)roce88 or 

 abrupt anovulation, or else expanded so as to be distinctly, ^en<'rally much, 

 broader apically than at the extreme base; furcuia wantini; or minute, rarely 

 (M. arizonae) a fourth as lon;^ as the supraanal ]date. 

 f'. Si/e small or medium; cerci of male always bifnreatc or with an inferior 

 subniedian process or abrupt au<;ulation- supraanal plate pr«'tty rej^ularly 

 triangular, with straight or feebly convex lateral nnirgins; furcuia usually 

 distinctly developed, rarely (M. ruUiiiiis) wantin-jj; proeternal spine usually 

 short (25. Collinus series). 

 ./■'. Lower fork of bifurcation of male cerci mu«-h lon;;er than tlie upper; 

 apical margin of subgenital plate narrowly, altruptly, and consiiU'rably 

 elevated. 



(f\ Small species; interval between mesosternal lobes of male more than 

 twice as lon^ as broad; of female quadrate; median ])ortion of male 



cerci cylindrical, not compressed 111. alpimiM (ji. I'.oo). 



(J-. Very small species; interval between mesosteiual loltes of male half 

 as lonj; attain as broad; of female transverse; n>edian i»oition of male 



cerci compressed — 112. in/aiitili.^ {n.',i'S7}). 



/-'. r])per fork of bifurcation of male cerci longer than the lower, which 

 is Honictiincs merely an inferior median or postmc<luiii process; apical 

 margin of subgenital jdate elevated, if at all, only broadiy. gradually, and 

 a little. 



//'. Furcuia of male distinctly present; apical margin of subgenital 



plate distinctly elevated more or less above the lateral margin-. 



/*'. Furcuia of njale consisting of slender spines, longer than the last 



dorsal segment; base of lateral marginsof subgenital plates incurved. 



t'. Furcnla of male less than a Ion ith as long as the supraanal plate; 



apical half of cerci bent upwaitl from tho basal tourse. 



j\ Prozona of male sub<iu»dtate; supraanal jdate with the apical 



and basal portions in o:je plane; subgenital plate of etiual or sub- 



e<iual breadth beyond the middle 113. »(i;*or (p. 337). 



J', I'rozona of male distinctly longitudinal; supraanal plate witL 

 the a])ical porti<«n distinctly elevated above the median; subgen- 

 ital plate distinctly narrowing beyond the middle. 



114. votifiiHnft (p. 339). 

 t-. Furcuia of male half as long as the supraanal jilate; anal cerci 



incurved but otherwise straight lir». aricouae (]>. 340). 



h'. Furculaof male consisting of bri«'f triangular lobes; baseof lateral 

 margins <»f subgenital plate not incurved. 



i'. Interval between mesosternal lobes of male twice as long as 

 broad; upper fork of cerci scarcely bent upward above the trend of 

 the l)asal stem. 

 ./'. Upper fork of male cerci much shorter than tuestem; sub- 

 genital plate shorter than broad 116. Icerltri (p. 341). 



— j-. Upper fork of male cerci nearly as long as the stem; subgen- 

 ital plate of equal k'ngtli and breadth 117. r?(7<7(>r (p. 343). 



i'. Interval between mesosternal lobes of male scarcely longer than 

 broad; ujjper fork of cerci bent distinctly u]»ward. 



118. lurUlus (p. 344). 



