514 On Irish Species of Eylais. 
breadth, connecting the eye-capsules. The latter are sinuate 
on the outer margins, with large cup-shaped and oblong 
lenses. The lip of the opening on the underside of the eye- 
plate may be broad, as in figure, or very narrow, causing a 
great difference in outline. 
The capitulum (fig. 9 @) measures about ‘63 millim. along 
the middle line of the maxillary plate, somewhat deeply 
emarginate distally, with outwardly and downwardly directed 
lateral processes, the apices of which are recurved; the 
pharynx is relatively narrow and of very uniform breadth 
towards the apex; cuticular ring sinuate. 
The palps are long (nearly 2 millim.) and heavily built, 
like those of infundibulifera in structure. Inner corner of 
second segment with 7 or 8 spines; a group of four of these 
is situated on the extreme inner corner. Third segment with 
about 18 comparatively long spines on and near the inner 
corner ; most of these are strongly feathered, and there are 
5 or 6 additional spines along the distal margin. Fourth 
segment clothed with very numerous bristles. 
Locality. Portmarnock Brickfields, near Dublin, June 1899. 
Lylats celtica, sp. n. 
The type of this species measured about 4 millim. in length, 
very depressed in form, with relatively large epimeral plates. 
In the structure of the eye-plate * (fig. 10) allied to H. hun- 
garica, Daday, but the anterior prominence is obtusely 
pointed in the centre, not tongue-like as in that species, and 
the eye-capsules are quite different in outline, being widest 
* In the type specimen the eye-plate was somewhat injured during 
mounting in balsam. 
