2 Rev. A. E. Eaton on New 



? . Prothorax greenish-gray above, vnih a black streak 

 on each side ; the rest of the thorax j^ellow, with two dark 

 streaks between the wings. Head ochraceous, yellow 

 around the ocelli. 



Length of body, $ 15-20, ? 21-25; fore-wing, c? 16, 

 ? 20-21; set. c? 30 and 35-30 and 36, ? 24 and 26-25 

 and 24 mm. 



Hahliat. — The Thames and the Kennet above Reading, 

 and Genthod near Geneva. In June and July. It flies 

 higher than our other two species, but may be caught 

 without difficulty towards sunset, or when fitful gusts of 

 wind sweep down the river. The terminal joint of the 

 forceps is subequal to the penultimate (as in E. vulgata) 

 and not shorter than it (as in E. Danica, Miill.). 



2. Cloeon simile, n. sp. 



c?. Turbinate eyes olivaceous or dark greenish sul- 

 phureous. Thorax black or fuscous above, polished. 

 Apical veinlets of marginal area numerous, sparingly 

 united. Legs olivaceous ; hinder tarsi darker; foremost 

 tibite greenish-gray, or blackish-green, the tarsi gray or 

 black. Abdomen piceo-fuscous above ; beneath cinereous, 

 scarcely yellowish towards the tip. Setae rusty white, 

 with reddish joinings. 



$ . Eyes black. Abdomen above, luteo-fuscous, with 

 testaceous joinings, and dark subcutaneous tracheas ; 

 beneath, olivaceous, with the last two segments strami- 

 neous. Legs green olivaceous ; the tibiiB and tarsi darker. 



Length of body, ^9, $ 10; fore- wing, <? 8, ? 10-11; 

 set. $ 14-15, ? 10-14 mm. 



Hab. — Abundant at Clumber Park, Notts : it also 

 occurs at Quy Fen, near Cambridge. September and 

 October. 



The male and female are much alike in colour; and 

 this similarity has suggested the specific name. 



3. Centroptilum pennulatum, n, sp. 



c?. Turbinate eyes carnelian red. Thorax fuscous, 

 or bran-coloured above. Legs white, with the tips of the 

 femora cretaceous, and the last tarsal joints slightly fawn 

 coloured. 



? . Legs grayish' white, with the femora sub-creta- 

 ceous. 



