perlidp:s. 153 



untenuaD dull tawny, paler towards the base : protliorax somewhat 

 rumilose, sli^'htly testaceous on each side, and with a testaceous 

 dorsal stripe, increasinj^ in Ijreadlh Iron) the hind anj^les to the fore 

 anp^les ; sides stiai^^ht ; anodes sharp: legs dull lawny : caudal ap- 

 pendap^es lawny, ])ubescent: win<;s suhhyaline ; veins testaceous; 

 the external basilar areolet has eij^hteen transverse veins, and the 

 t-erminal has six ; the terminal part of the submaro^inal region has 

 two transverse veins; the subnudian areolet has seven transverse 

 veins. Length of the body 6 lines ; of the wings 26 lines. 



a. North America ? Presented by the Eiilomolngical Club. 



42. Perla intermixta. 



Flava ; capitis et prntliordvis latera fnscescentia ; caput thorace 

 mm latins ; protliorax subrur/ulosus, antice paiillo lulius, late- 

 ribus snbconvexis, amjulis subublmis ; pedes testacei ; ala 

 sublii/alincr. 



Yellow : head and thorax brownish along each side; head not 

 liroader than the thorax : prolhorax slightly rugulose, a little liroader 

 in front ; sides sliglitly convex ; angles itither obtuse : legs dull tes- 

 taceous: caudal appendages ])ale testaceous: wings suhhyaline: 

 veins testaceous ; external Itasilar areolet with sixteen transverse 

 veins; terminal areolet with five transverse veins ; terminal part of 

 the submarginal region with no transverse veins ; submedian areolet 

 with six transverse veins. Length of the body 6 lines ; of the wings 

 28 lines. 

 a. Venezuela. From Mr. Dyson's collection. 



43. Per LA tiu.tuncta. 



Lutea, fiilvo varia^ subtus Jlava ; caput thorace vix lati us ; pro- 

 thorax ru(/ulosus,sulcatus, antice paullo latins, lateribus rectis, 

 angulis acutis ; aUc suhhyaliiKP. 



Luteous, partly tawny, yellow beneath : head very little broader 

 than the thorax : pr(»thorax rtignlose, with a slight middle furrow, 

 little broader in front: sides straight ; angles sharp : wings siil)hy- 

 aline ; veins testa :eous ; external basilar areolet with twenty trans- 

 verse veins ; terminal areolet with six transverse veins ; terminal 

 part of the siibmavginal region with no transverse veins; submedian 

 areolet with eight transverse veins. Length of the body 9 lines ; 

 of the wings 28 lines. 



a. Georgia. From Mr. Abbots collection. 



