LIBELLULID,*:. GOMPHUS. 87 



2d with the base and hinder margin, and the five next with a broad 

 transverse fascia in the middle, slightly interrupted down the back, and two 

 narrow lunate spots on the margia yellow, or luteous, the two last segments 

 black, with a small yellow dot on the lateral base of the peniilumate ; anal 

 appendages black; legs black ; wings hyaline, or slightly fuscescent, stigma 

 black. Female similar, excepting in the anal appendages and form of the 

 posterior wings. 



Widely distributed, though rarely found within the metropolitan 

 district : it has occurred, in July, near Godalming, and in abundance 

 in the New Forest ; also at Worcester, Colebrook Dale, in Devon- 

 shire, Somerset, Cornwall, Yorkshire, amongst the lakes in the north 

 of England, and near Edinburgh, and Loch Lomond, and Loch 

 Katrine. 



Genus XIIL— GOMPHUS, Leach. 



Labium with its central lobe transverse-subquadrate, the upper margin curved 

 and entire, its lateral lobes small, somewhat ovate, armed at the apex with 

 a long moveable process: labrum slightly emarginate : mandibles deeply 

 toothed : head pilose,^somewhat semiglobose-transrerse, front tumid ; ei/es 

 remote : ocelli placed in a curved line : collar distinct : thorax and base of 

 the abdomen pilose, the latter with the 3rd segment attenuated, its apex 

 clavate, and furnished in the males with four short appendages, and two 

 processes in the females : wings moderate, rather acute at the apex, the 

 hinder pair in the males with a deep notch and acute angle, in the females 

 rounded : accessory membrane, in both sexes, minute. 



The remote eyes of the insects of this genus at once point out a 

 ready distinction from the other genera of this family, exclusively of 

 which the abdomen is clavate, furnished with rather short anal pro- 

 cesses in both sexes ; the posterior wings angulated on the inner 

 margin in the males, but rounded in the females ; the middle lobe of 

 the labium has its upper edge entire, and the species are mostly of 

 small size. 



Sp. 1. forcipatus? Thor ace nigro, character ibusjlavis, abdomine nigra , lined 

 dorsali tenui, ultima 3-id segmentd abdominalid non attingente, maculisque 

 later alibus Jlavis, appendicibus pedibusque atris. (Long. corp. 1 unc. 9 — lOj 

 lin. ; Exp. Alar. 2 unc. 5 — 6 lln.) 



Li. forcipata. Linne? — Donovan, v. xii. pi. 423. — Go. vulgatissimus. Steph. 



Catal. 309. No. 3433. 

 Front yellow, with three transverse black streaks, dilated in the middle, and 

 .rarely confluent; eyes cinereous ; thorax yellow, with six black lines above, 



