PERLIDES. 157 



53. Pkrla angulata. 



Testacea ; caput anlice rotundatum marginatum, thorace laiius, 

 disco fulvu ; prothorax valdc rugulosus, antice rotundatm, 

 lateribus suhangulatis ; alee subtestacece. 



Testaceous : head rounded and with a rim in front, hroader 

 than the thorax ; disk tawny : antennae testaceous : prothorax 

 very rutjfosc, obtusely angular on each side, rounded in front : 

 winp:s with an indistinct testaceous tinj^e ; veins testaceous ; exter- 

 nal basilar areolet with ten transverse veins ; terminal areolet with 

 three transverse veins ; terminal part of the submar<^inal areolet with 

 ni» transverse veins ; submedian areolet with six transverse veins. 

 Length of the body 6 lines ; of the wings 20 lines. 



a. Ceylon. Presented by William Templeton, Esq. 



54. Perla signata. 



Testacea, tii tens ; caput thorace nan latins; antenna nigrce ; scu- 

 tian antice midlo latins ; pedes fonoribus et tibiis apice tarsis- 

 que nigris ; alec albidcB,fasciis duabus cincreis. 



Testaceous, shining : head almost smooth, not broader than 

 the thorax : eyes and antenna; black : ocelli bright red : scutum 

 minutely rugulose, with a very slight longitudinal furrow, much 

 broader in front; sides almost straight ; angles rounded: tips of the 

 femora, knees, tips of the tibiae and tarsi black : wings whitish, with 

 two gray bands which are occasionally indistinct, one in the middle, 

 the other at the tip ; veins yellow, blackish on the bands ; external 

 basilar areolet with fifteen transverse veins ; terminal areolet witli 

 three transverse veins ; submedian areolet with three or four trans- 

 verse veins. Length of the body 4 lines ; of the wings 12 lines. 



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



Sub-group 4. 



Species above or below the middle size : prothorax rugose, 

 with straight sides which arc often inflected when dry ; its colour 

 bright in the middle, black or brown on each side : wings livid or 

 yellowish ; veins of the same colour. 



