726 



ENTOMOLOGY. 



edge. Abdomen of the male clavate, of the female with 

 an acuminated process. 



Sfi. 1. Annulutus. 



Libellula forcifiata. Harris. 



JEahna annulata. Latreille. 



JJbcllula Boltonii. Donovan. 



Cordulegaster a?inulatua. Leach's MSS. 



Inhabits Yorkshire, Devonshire, Dorsetshire, Somer- 

 setshire, and Cornwall. It likewise occurs amongst the 

 lakes, in the north of England; amongst the Pentland 

 hills, near Edinburgh ; and on Loch Lomond and Loch 

 Katrine. 



Genus CCCCLXXXII. Gomphus. Leach's MSS. 



Libellula. Linn. Donovan. 



Wings of the male angulated at their anal edge. Ab- 

 domen clavate in both sexes. 



Sfi. 1. Fulgalis aimus. 



Libellula vulgalissima. Linn. 



Libellula forcifiata. Donovan. 



Gom/i/tus -uulgatisaimua. Leach's MSS. 



Inhabits Europe. Is occasionally taken near London. 



Genus CCCCLXXXIII. jEshna. Fabricius. 



Libellula. Linn. Donovan. 



Hinder wings of the male angulated at their anal edge. 

 Abdomen cylindric in both sexes, not clavate. 



Sfi. 1. Grandis. 



Libellula grandis. Linn. Donovan. 



JEslma grandis. Fabricius. 



Inhabits Europe. 



Obs. There are several European species, which have 

 been confounded with JEahna grandia. 



Genus CCCCLXXXIV. Anax. Leach's MSS. 



Hinder wings of the male not angulated at their anal 

 edge, hut resembling those of the female. Abdomen 

 cylindric in both sexes; not clavate. 



Sfi. 1. Imfierator. 



Inhabits England. 



Family III. Agrionida. 



Wings erect. Head transverse. Abdomen cylindric- 

 linear. Ocelli, or little eyes, placed in a triangle. 



Genus CCCCLXXXV. Agrion. Fabr. Latreille. 



Libellula. Linn. 



Wings membranaceous, with a rhomboidal stigma. 

 Abdomen of the male not armed with a forceps-like ap- 

 pendage. 



Obs. We have of this genus several indigenous spe- 

 cies, not accurately determined. 



Genus CCCCLXXXVI. Lestes. Leach. 



Wings membranaceous, with an oblong quadrate stig- 

 ma. Abdomen of the male armed with a forceps-like 

 appendage. 



Obs. We have three indigenous species. 



Gknus CCCCLXXXVII. Calepteuyx. Leach's 

 MSS. 



Agiuon. Fabricius, Latreille. 



Win^s coriaceo-membranaceous, without a real stig- 

 ma, in place of which is sometimes an irregular opaque 

 spot. Abdomen of the male furnished with a forceps- 

 like appendage. 



Oha. This genus comprehends those Agrionida with 

 coloured wings. 



Tuibe II. Ephemerides. 



Tarsi four-jointed. Mouth not distinct. Inferior wings 

 much smaller than the others, sometimes wanting. Abdo- 

 men with the extremity furnished with filaments. 



Metamorphosis quadruple. 



Family I. Baetidct. 



Tail with two filaments. 



Genus CCCCLXXXVIII. Baetis. Leach's MSS. 



Ephemera. Linn. Fabricius, Latreille, 



Wings four. 



Sfi. 1. Bioculalus. 



Kfihemera bioculata. Linn. Fabr. 



JBaetia bioculalus. Leach's MSS. 



Inhabits Europe. 



Genus CCCCLXXXIX. Cloeon. Leach. 



Ephemera. Linn. Fabricius. 



Wings two. 



Sfi. 1. Pallida. 



Efihtmera di/itera. Linn. Fabr. 



Cloeun fiallida. Leach's MSS. 



Family II. Efihemerida. 

 Tail with three filaments. 



Genus CCCCXC. Ephemera. Linn. Fabr. Latr. 

 Leach. 



Sfi. 1. Vulgata. 



Lfihemera vulgata. Linn. Fabr. 



Inhabits Europe. 



Sect. II. Filicornes. 



Antcnnse longer than the headj not subulate. Wings 

 generally deflexed, or incumbent. 



Tribe I. Panorpides. 

 Head anteriorly produced into a rostrum. 



Family I. Phyaafiida. 



Wings extended, unequal, anterior ones somewhat 

 triangulate-rounded, the hinder ones very long, linear. 

 Ocelli none. 



Genus CCCCXCI. Physapus. 



Panoupa. Lmn. Fabricius. 



Nemopiera. Laticillc. 



Sfi. 1. Coa. 



Panorfia coa. Linn. Fabr. 



Ncmofitera coa. Latreille. 



Inhabits Portugal, Spain, and the islands of the Ar- 

 chipelago. 



Family II. Panorfiida. 



Wings equal, ovate-elliptic, laying one over the other. 

 Ocelli three, approximate, arranged in a triangle. 



Genus CCCCXCII. Panorpa. Linn. Fabr. Lam 

 Latr. 



Tarsi with two bent claws, denticulated beneath, hav- 

 i ig a spongy pui villus between tlicin. Palpi nearly equal, 

 filiform; the last joint cylindric-ovatc. Mandibles with 

 their points distinctly bidentate. Abdomen of the male 

 with the three last joints forming a tail armed with a 

 forceps. 



Sfi. 1. Communis. 



Panor/ia communia. Linn. Fabr. Latr. Panz. 



Inhabits Europe. 



Genus CCCCXCIII. Bittacis. Laticillc. 



Panorpa. Linn. Fabr. 



Tarsi with a single nail. Palpi of the maxilla: dis- 

 tinctly longer than the labial ones ; the second and third 

 joint much lengthened, thicker: labial palpi with two 

 elongate cylindric joints. Mandibles very long, narrow ; 

 apex acute, entire. Abdomen cylindric, that of the male 

 not terminated with a forceps. Legs long. 



Sfi. 1. Tifiularius. Obscure reddish; wings imma- 



