236 



Annulose and Rayed Animals 



Pontobdella Leach muricata Lin. — Ichthyobdella Blainv. 

 (Piscicola Blainv., Haemocharis Sav.) Pe'rcee. (Jig. 28. a, of 



28 



the natural size ; b, magnified ; c, disk magnified, viewed 

 on the back.) It differs from the Geometra of Lin. in 

 many particulars ; among others, in having the disk with 

 14 rays and dark points. It was found, on a perch brought 

 from Lough Neagh, by Miss Templeton. — Prostoma 

 Duges ? armatum Duges t {Jig. 29.) Found among Con- 

 ferva spiralis from a drain 

 in the bog meadows, a re- 

 presents the animal: it was 

 translucent and gelatinous, 

 with the cephalic points 

 orange, and scattered irre- 

 gularly. In the P. armatum 

 of Duges, of which the head 

 is sketched at b, the points are dark, and much more re- 

 gularly arranged on the sides of the gullet. — Borlas/a 

 Oken (Nemertes Cuv.) longissimus Sow. Common in our 

 salt-water lakes, on the rocks, beneath the sea-weed. A 

 description of it will be found in the Lin. Trans., vol. 9. 2. 

 p. 293. — G6rdiu5 Lin. aquaticus Lin. Common in rivu- 

 lets, and, sometimes, moist rich ground. 



RADIA N TA. 

 ECHINODE'RMATA. 



pedicelle's. 



Astero'ida Lat. 



^sterias Lin. endeca Sow. Occasionally found on our shores. — 

 A. papposa Link. Common about all our shores. The rays 

 vary from 11 to 15. [In VHI. 78., note*, are figures of 

 what is there deemed the young of this species.] — A. gla- 

 cialis. Found in Belfast Lough, by Jas. Grimshaw, jun. 



