lfi Proceedings of the Royal Irish Academy. 



EXPLANATION OF PLATE I. 

 Pig. 



1. Myeale (ParesptrtUa) atlantica n. sp. 



- : toxa, x 330 : d, <-, large and small anisochelae 



x6' rigmal 330. 



2. Fbrapia fragilis n. sp. 



a, b, styli. 140; ■•. tylotutn. x 330; (f, >-. two forcipes, x 900 and 

 x 600 ; /, isochela arcuata, x 600 ; g, sigma 



3. Microciona lasris Bowerbank. 



a, b, c, r, heads of styli of different sizes, x 330 ; </, small stylus. 

 30; f, dermal stylus. ■ 140: g, head of dermal stylus, • 600; ^,toxa 

 x330. 



