of his Synopsis as my limits will allow. A little further ex- 

 planation, however, of one of the figures which refers to the 

 2nd species will be necessary. T represents the thorax in 

 profile ; w, the base of the wing ; «, the base of the antennae, 

 andjo, some remarkable appendages pointed out to me by 

 Mr. Haliday : they seem to me to be the analogues of those 

 developed in the pupae, and it may be by accident that they 

 are not united to the prothorax, or absorbed in their change 

 to the Imago, otherwise it would be difficult to explain the 

 reason why they are not common to the genus. 



A. Saccopteryx Hal. Wings with a coriaceous pouch 

 in the middle, at least in the males : 6 external cells. An- 

 tennas moniliform, verticillate. 



1. fuliginosa Meig. v. l.p. 107. 8. 



B. PsYCHODA. Wings tense; 6 external cells, 3rd petiolate. 

 Antennae moniliform, verticillate. Valves of oviscapt at- 

 tenuate. Hal. 



2. auriculata Hal. with 2 clavate appendages on the front of 

 the thorax. 



3. ocellaris Lat. Meig. pi. 3. / 14-17. 



4. tristis Meig. — 5. nubila Meg. 



6. sexpunctata Qirt. Brit. Ent. pi. 1^5. 



Taken the middle of October at Niton, in the Isle of Wight. 

 The figure at the bottom of the plate shows the natural size. 



7. canescens Meig. — 8. phalaenoides Litm. — DeGeer. 6. pi. 

 27./ 6. 9. 



8. nervosa Schr. In this species the males are twice as large 

 as the females. 



C. Trichomyia Hal. Wings with 5 external cells, 2nd 

 petioled, 5th complete: brachial cells not exceeding the 1st 

 third of the wing; costal half divided ; nerves very hairy. 

 Antennae elongate, 1st and 2nd joints thick, the rest longer, 

 somewhat conic. Valves of oviscapt broad ovate. 



9. urbica Hal. Brown, front thorax and base of abdomen 

 clothed with dark yellow hairs, the rest of abdomen, an- 

 tennas and legs with black hairs; wings obscure, yellowish, 

 with 2 black bands ; poisers pale, with the knob black- 

 brown : coxae, thighs, tibiae and oviscapt yellowish. Male 

 unknown. One of the largest, found by Dr. Coulter in 

 Dublin, in the morning on the walls of offices, in the day 

 settling on the trunks of elms in the College park. 



D. Sycorax Hal. Wings with 5 external cells, 2nd pe- 

 tioled, 5th incomplete ; 3 costal cells, 2 brachial, extending 

 to the middle of the wing ; nerves only pubescent : body 

 nearly naked. Antennae slender, pubescent, 1st joint very 

 short, 2nd globose, the rest linear. 



10. silacea Hal. — Male, pale ochre, wings obscure hyaline. 

 A very minute and fragile species, found very rarely in 



drains at Holywood. 



The plant is Herniaria ciliata (H. glabra Linn.) Ciliated 

 Rupturewort, communicated by J. Janson, Esq., from a root 

 which he brought from the Lizard. 



