ON THE SYNONYMY OF THE PERLITES. 37 



lar yellow markings, which usually disappear on the death of the insect : 

 the mesothorax is brown, with a yellow margin ; the metathorax is entirely 

 Drown : the legs are brown, the tibice rather paler : the wings are hyaline, 

 slightly tinged with yellow ; the abdomen is yellowish, with dusky sides. 



Inhabits Europe and England. In the cabinet of the En- 

 tomological Club. 



Sp. 6. Perla cephalotes. (Corp. long. .65 unc. alar, dilat. 1.75 unc. fern) 

 „ „ Curtis; ' British Entomology,' pi. 190. 



„ „ Pictet ; * Annales des Sciences Naturelles, ' vol. 



xxviii. p. 56, tab. vi.ff. 1 — 3. 

 „ „ Stephens ; ' Illustrations of British Entomology' 



Mand., vol. vi. p. 136. 



Head variegated with black, brown, and yellow ; prothorax brown, very 

 rugose, traversed longitudinally by a furrowed yellow line. Meso- and me- 

 tathorax nearly black, each with a brown or paler spot posteriorly. Abdo- 

 men yellow throughout in the female, at the extremity only in the male. 



Inhabits Europe and England. In nearly all collections of 

 British insects. I see that M. Pictet complains of an incor- 

 rectness in Mr. Curtis's figure, as regards the neuration of 

 the wings in this species. In this I think he is wrong, the 

 nervures being so exceedingly variable as often to differ in 

 the opposite wings of the same insect. I could wish the con- 

 tinental figures were always as accurate as those in ' British 

 Entomology. 1 



Sp. 4. Perla Cymodoce. Nigricans, vitta communi longitudinali flava 

 capitis prothoracisque. (Corp. long. .65 unc. alar, dilat. 1.75 unc. fern.) 

 „ bicaudata ? Fourcroy ; * Entomologia Parisiensis,' p. 349. 

 „ bicaudata, Stephens ; ' Illustrations of British Entomology,' 

 Mand. vol. vi. p. 136. 

 Semblis bicaudata, Fabricius ; ' Ent. Syst.' vol. ii. p. 73, No. 8. 



Nearly black, the head and prothorax marked by a longitudinal yellow 

 line, the prothorax is rugose, and has a median longitudinal furrow in 

 which occurs the yellow line : the wings are dusky ; the abdomen beneath 

 yellowish. 



Inhabits Europe and England. In nearly all cabinets of 

 British insects ; always labelled as the Perla bicaudata. 



(To be continued.) 



