BKITISH FOSSILS. 



iEGLINA, sp. (eyes OF). 



Plate IV. Fig. 9. 



This large species is perhaps not the largest jEglina known ; M. 

 Barrande has an enormous one from the Llandeilo rocks of Bohemia, 

 witli a projecting front to the head. Ours probably was six inches 

 long, and the great eyes an inch and a quarter long (no other part 

 occurs with them). The eye of this species lay for a long while in 

 the Museum as an undescribed Bryozoon from the Llandeilo flag. 

 Contrary to the usual arrangement in the eyes, the lenses are 

 in quincunx, instead of hexagons (see fig. 9 h), and very closely set ; 

 but in some parts the normal hexagonal arrangement is seen 

 (fig.9o). 



Locality. — Upper Llandeilo Flags of Abereiddy Bay, Cardigan- 

 shire. The rest of the bod}^ should be sought for there. 



Explanation of Plate IV. 



Fig. 1 . jEglina binodosa, Salter, nat. size, Lower Llandeilo ( Arenig) group of Cefh 



Gwynlle, Stiper Stones, Shropshire. 

 Fig. 2, 2 a, magnified. Labrum and hypostome of do. Same locality. 

 Fig. 3, 3 a, magnified. Eye of do. 



Fig. 4, Body rings, showing the tubercles on the third segment. 

 Fig. 5. Tail, nat. size. 



Fig. 6. All the above portions are enlarged in this figure. 



Fig. 7. JSglina grandis, Salter. A small specimen from the Lower (?) Llandeilo rocks 



of Whitesand Bay, St. David's, Pembrokeshire. 

 Fig. 8. A compressed tail. Same locality. 



Fig. 9 a. yEglina, — sp. An enormous species, of which we have only the great eyes in 

 their natural position. The slate is much compressed and folded. 9 b, c, 

 magnified parts of the eye. Upper Llandeilo, Abereiddy Bay, Pembrokesh. 



All the above are in the Mus. Pract. Geology. 



J. W. Salter. 



November 1864. 



