THE MYUlAruUA OF NOUTH AMEKK'A. 113 



3, PectliiiuiigulM amerioaiius, y^-u. ft h|(. nuv. 



hitujmmiH. — U(>l.tt4'd \o St'Uiiiilijla rjimia Muiiiort ; liiit tlu> anal |uiir 

 of U'iiH ji>iiit4«l and the rlaw of maxillary palpus ptM-tinatc along its 

 ciitjir iiikU'I- side. 



Tf/pe. — No. .VJ.s, 



llnhitiit. — I'icliiliiiyiic Hay, (iiillor ('aiifonija. 



Ihsrriittiim. — Oraii;;*', darkest aiit< rioily: Irys |»aU'. 



Itolmst, SI air«»ly att<'iiiiat4'd aiitniinly, niorr post* riorly. 



S<»j;in«'iits not polislird, vt'iy finely letirulati'; sparsely pilose. 



I*reliens4>i-ial le;;s not reaeliin^ base of anteiniie; sternum almost 

 twieu as wide as Ion;;, anterior mai'Kiu sli;;litly callous; roxa* of about 

 e(pial length and width, unarmed, ant<'rioi- margin not nnu'li sinuate. 



Ceplialic plate sli;;|itly lon^icr than wide; basal jilate three times as 

 wide as Ion;;; pre liasal plate e\p(»sed. Antenna- tilifurni, ratht.-r l(»ng. 



Dorsal plate manifestly bisnleat**. 



Spiraeles snboval, lon;;itudinal, anterioi lar;rest. 



Ventral plates not suh-ate; porous area suboval. inu<'h snniller on 

 posterior se;j:ments; last ventral plate very wide, pilose, sides eon- 

 verging. 



Posterior pleura' large, pilose; pores large, eoneeale<l. 



Anal i)air of legs (i jointed, moderately erassate, joints all large, 

 densely pilose; unarmed. 



Pairs of legs 9 <m. 

 , Lt'Ugth ."»(>"""; width 1..m""". 



This si)eeies is described from an adult female. 



According to Meinert's diagnosis of the genus SrlHudtfhi this species 

 would be included under that genus; but the three known spe<'ies nniy 

 be separated by the following generic iharacters: 



(I. L'luw of niaxilliiry )iiil|iiis not ]»e<-tiiiiitc, outt-r part of fir.st pair of iiiuxillii* without 

 a trace of a lateral jtrotess; lahriiiii iMitiri'ly uiiit«Ml, tet-th 20-l.'2, «(jual; anal 

 leL^s 6-joint«Ml Xemorennitt. 



un. Claw of maxillary palpus in-ctinate; outer part of tirst* maxilla- with a Hmall 

 lateral process; labriim free in the middle. 

 h. Aual pair of legs r)-Jointed; claw of maxillary palpuH only pe<-tinate under the 

 apex; labral teeth about !•'>, equal; tirst joiut uf unal k>;rs almoHt coalesce 



with seccmil Kximia. 



bb. Anal pair of Icfjs t>-jointed; claw of maxillary palpus jtectinate for its entire 

 leiifjjth; labral t«'eth H-|-10+8, the outer enlar;;ed; first joiut of aual legs not 

 coalesced with second imericaiiuii. 



On account of these generic ditierences between the three species, 

 esiHxially between th«^ first and the last two, I have thought it best to 

 place americanus and iximin und4*r the new genus Pevtiniunffitis, of 

 which umeriedHHs is the type, restricting ISchendyla to ntmorefUfis. 



The generic ditterences between americanux and eximia are no doubt 

 worthy of subgeneric rank, and I therefore propose the name Nan- 

 nopuH for the reception at' 4\rimia. 



2097— No. 46 8 



