

ii 



i 



T 



TilK HATUACIIIA Or NOKTII AMKIJICA. 2fil 



l(/(//.i/i/(( . ('ii|if, I'liic. Ac. I'liilii., If^i'iH, |i. :'u I. 



/,'/l.(/i« «'<i|ii', iii<l.li>r., |-(ij, p. ;!.')/, illlil N.lt. Hist. KlV., I-Ti."), p. l(i-j. 

 .l»Ni/»i(( .Sliilic/.k!!, ridc. Ah. Sdc, l-i/d, p. l.VJ. 

 IhitmitjilirlniH Ciiiiu'raiio, Atti. Ai'f. Tor., \i\ , HT'.I, p. ■'■'•J. 



Viipil Iiorizoiitiil. T(Hi<;iio elliptic or pyiilonii, ciitiro aixl lVo<' hcliind. 

 Vomcriiu! teeth none. Tyiiiimmim di.stinct or liidden. Finjit-is iVee; 

 toe.s more or le.s.s wchhed, the tip.s simple or «li!;ite(l into small disk.s. 

 Outer metatiirsais united. Omo.sternum j^enerally mi.s.sin};; if present, 

 earlila<;inous; sternum, a eartila<;inons plate, sometimes more or less 

 ossilied alon;^ the meilian line. Diapophyses of .sacral vertebra more 

 or less dilated. Teiininal phalan;,M's obtuse or tri.injiular. 



In the l'roeeedin;;s(»r the Philadelphia Ac^ademy Ibi' l.S.")l Dr. ('harles 

 (iirard };ave a .synopsis of the North Am«'riean species of this ;i('nus, 

 which t'mbraces thirteen specilic names. ICiyht of these are recojiiiizetl 

 in the jjresent work, and two others as subspecies. In ISSIJ the writer 

 L;ave a synopsis of tiie species in the Proceedings of the American 

 l'hih).sophical Society, the result of the study of which has been iucor- 

 |)orated into the present volume. 



I. Ili'iiil willidiil liotiy cicsls jilMivr. 



a. Iiitcnirliilal space w idrr lli;iii cvclitl. 



ranitoiii ;; I anils small, as wide as Imi;;, not wiiicr than licail : li'<rs lon^tT, 

 (>n<1 of tarsus it-acliini.; to i'l'oni I'lont oroiliit tii rml of inn/./.l<> ; iiicta- 



tarsal tiilirnlfs insi^^iiilicant /)'. iniiirtahiH. 



raiotoiil ;; I a lids la !';;<', loii<r, sprrailin;; posti'iioil v. iiiiicli wider than liead : 

 lees -.holt, end oC tarsus to tviiipaniiin : met.at.iisal Inliereles insij;- 



niliealit //. ticbilis, 



(Xi\. Inleroi'liital space nanower than eyelid. 



I'arotoiil ;;land oval : metatarsal tnliercles insi<r|iilicitnt ; a lai';;e e^hmd 



on tihia ; si/e lafejcT /;. i iiliii,iliit nsin. 



Tarotold j;land oval : liotli metatarsal (iiliereies with <;ntf iii^ edijes, the 

 internal very lar;;< , mn/./le very short; no lai'Lje jil.-ind oniiliia; 



si/e smaller />'. loiiijinrlilin. 



It. lii'.'ld w ith liony ( Ti'sts i-liove. 



I. Iiiterorlpit.il spaci' wi'hr than eyelid. 



.\ stroll;; post frontal crest ; siiperciliaries diver^i'iit liackwaids; parotoiil 

 eland narrow and e|on;;ate, descendin;; towaids axilla : lai L;e inlands 

 on ilii;;h and on tihi.'i : lie:id loiir times in the leni;th : metatarsal liili- 



ercles small />'. iilrui inn. 



•J. Iiiterorhital space narrower tlian ey<did. 

 It. No postorliiial "id;;es. 



Superciliary eii'sts parallel ; tyni|iamim distinit ; two enttine; metatarsal 

 tiiliercles : femur larirclv free /.'. Iiniiimil iiii<. 





til . 



Ill ' 



^il 



i 



