VERMES 117 



eludes the common Earthworm. These have no 

 parapodia and only a few small bristles. Although 

 most species are terrestrial or of fresh water, a few 

 are marine. However, they are inconspicuous and 

 are not included here. 



Still another group, the Hirunidea, includes the 

 Leeches. These possess a conspicuous terminal 

 sucker at each end. While most of the species live in 

 fresh water, many are marine and occasionally they 

 are seen attached to a fish or free swimming. 



ANNELIDA 



Lepidonotus squamatus Linne 



Fig. 15 



Flat, about one inch long, usually brown in color, 

 covered with twelve pairs of rough scales. Often 

 found on underside of stones or in dead shells; com- 

 mon along the New Jersey coast from between the 

 tides to ten fathoms or more. Known from Delaware 

 to Labrador; probably extends farther south also. 

 When disturbed it rolls itself into a ball. 



Lepidonotus sublaevis Verrill 



Similar to the above except that the twelve pairs 

 of scales are smooth and lighter in color. 



Harmothoe imbricata Linne 



Similar to the above except with sixteen pairs 

 of smooth scales; not as common as Lepidonotus but 

 known from Delaware Bay to the Arctic. In New 

 Jersey it is known from shallow water to 84 feet. 



