136 ACENTBOPID-S — PERLIDES- 



The following Lepidopterous insect has been described as one 

 of the Phryganides. 



Fam. ACENTROPID^. 



Tibiae non calcaratae. 

 Acentropidae, Steph. III. Brit. Ent. Mand. vi. 148. 



Genus 1. ACENTROPUS. 



Acentropus, Curt. Brit. Ent. xi. 497 ; Steph. III. Brit. Ent. Mand. 



vi. 150, 1 ; Westw. 

 Phryganea p., Oliv. '; Latr. 



1. Acentropus niveus. 



Pallide rufo-ochraceus ; caput et thorax canescentia ; ales sericeo- 

 nivecB. Long. 2^ — 3 ; alar. 6 — 7^ lin. 



Phryganea nivea, Oliv. Latr. Hist. Nat. Crust. Sfc. xiii. 93. 

 Acentropus Garnonsii, Curt. Brit. Ent. 497. Westw. Trans. Ent. 



Soc. Lond. i. 117. 

 Acentropus niveus, Steph. III. Brit. Ent. Mand. vi. 150, 1. 



Europe. 



Sub-order 2. PERLIDES. 



Caput sublrigonum, antice obtusum, thoracis latitudine aut 

 latius. Oculi subglobosi, piomineiiies. Ocelli 3, triangiilutn fin- 

 geutes. Antennae nmlti-articulatce, setaceae, remola?, ante oculos 

 insertoe, corpore vix breviores. Mandibulae distinctas. Palpi exerti, 

 inflexi, filiformes aut setacei ; palpi maxillares 5-articulati. Pro- 

 thorax depressus, transverso-quadiatus. Abdomen moUe, elongatum, 

 depresso-cylindricum, setis apicalibus multi-articulalis sEppe in- 

 structum. Pedes compressi ; tibiis tarsisque elongato-cylindricis ; 



