found on the South Coast of Devonshire. 113 



LlJCERNARIA AURICULA. 



Tab. VII. Fig. 5. 



Lucernaria Auricula. Gmel. Syst. p. 3151. 



Holotjiuria lagenam referens, tentaculis octonis fasciculatis. Mull. 

 Prodr. Zool. Dan. 2812. 



Pellucid, green, brown, purple, red, or yellow, and all the in* 

 termediate shades in different subjects : peduncle short, cylindric, 

 sub-angular: arms usually eight surrounding the mouth, con- 

 nected by a thin membrane almost to the top, the apex of each 

 furnished with numerous short clavate appendages; between each 

 arm on the margin of the web is a small oval reflected vesicle. 



Length three quarters of an inch ; expansion of the arms full 

 as much. 



The arms of these animals are in continual motion, catching 

 their prey, and carrying it to their mouths. 



Of the three known species of Lucernaria, this is the only one 

 which has occurred on our coasts, and that not frequent ; seve- 

 ral, however, were taken together in Salcomb Bay, at an un- 

 usually low tide, adhering to algee. 



The figure represents a variety with only seven arms. 



REFERENCES TO THE FIGURES. 



Tab. II. Fig. 1. Cancer floridus. 



2. — — tumefactus. 



3. denticulatus. 



Tab. III. Fig* 1. 2. subterraneus. 



3. 4. Oniscus thoracicus. 



5. Cancer stellatus. 



vol. ix. Q Tab. IV. 



