102 Mr. Montagu's Description of several Marine Animals 



tubular, deflected : feelers four, the upper pair chelate ; the 

 lower pair minute, and hid beneath : eyes four, seated on a 

 conic tubercle differing in shape from that of P. spinosum, Fig. 8. c. 

 On the posterior part of the back is an erect tubercle similar to 

 that on the last species ; but the legs are longer in proportion, 

 furnished with slender spines or bristles at the joints. 



Less than the preceding. 



Colour dusky black. 



Possibly this is the Gmelinian P. spinipes: if so, we are in- 

 formed that it is found in the Norwegian Sea. It is not of frequent 

 occurrence on our coasts, but sufficient to know that the female 

 is possessed of the filiform receptacles for the ova. 



Doctor Turton has given a species of Pkalangium under the 

 title of hirtum, without reference or synonyma, that appears 

 only to differ from*P. spinipes in being hairy instead of spinous, 

 and is probably the same; for the distinction between hair, 

 bristles, and slender spines, on the limbs of these small animals, 

 is so extremely vague, that a more minute definition of such sub- 

 jects is required to truly enlighten the more abstruse parts of na- 

 tural history. 



Oniscus Testudo. 

 ■ Tab. V. Fig. 5. 



Body sub-ovate, composed of eight joints rising to a ridge on 

 the back ; the plates elevated at their edges ; the four first fall 

 very low on the sides, and obscure the anterior legs : along each 

 side of the body a row of small tubercles : the front sub-bifid : 

 antennae four, very short, lower pair hid beneath : eyes prominent, 

 black : posterior end obtusely pointed ; caudal fins beneath, ob- 

 scure : legs fourteen, short and trong, the three posterior pairs 

 longest; all furnished with a simple claw. 



Length 



