112 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



minute nodules in the middle of many of the setse of the 

 swimming feet. 



Gijlindropsyllus Icevis, Brady. (PL XXV, fig. 6 ) 

 Length 1.20 mm. One specimen only of this easily 

 recognizahle species was recently taken by the dredge on 

 the muddy bottom inside of Port Erin breakwater, the 

 only specimen recorded in the L.M.B.C. district. Under 

 high magnification the entire surface is seen to be finely 

 dotted. A spermatophore is in this specimen attached to 

 the first abdominal segment. 



Family Monstrillid^. 

 Monstrilla rig Ida, Thompson. (PI. XXIV, fig. 6. a.) 

 Length 1.75 mm. One specimen taken by townet off 

 Puffin Island. This species has two abdominal segments, 

 and three setae on each furcal segment. 



Monstrilla dance, Claparede. (PI. XXIV, fig. 6. h.) 

 Length 1.30 mm. One specimen was taken by townet 

 about two miles from Puffin Island, and lately several have 

 turned up near Port Erin Bay, one haul of a townet cap- 

 turing three. This species has three abdominal segments, 

 and four setae on each furcal segment. 



Monstrilla anglica, Lubbock. (PL XXIV, fig. 7.) 

 Length 1.75 mm. Two specimens have been taken by 

 townet off Puffin Island, three years apart. This species 

 has four abdominal segments and five setae on each furcal 

 segment. 



Monstrilla longicoriiis, Thompson. (PL XXIV, fig. 8.) 

 Length 1.50 mm. One specimen was taken by townet 

 off Puffin Island in 1889. This species has four abdominal 

 segments and four setae on each furcal segment. It may 

 be easily recognised by its long straight antennie which 

 are nearly as long as the entire body. It appears to be 

 identical with a single specimen recently described by 



