160 TEANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



pkmwsa, indeed it is fairly common at low water at Puffin 

 Island. After careful examination of specimens of the 

 undoubted S. diplocha'itos obtained from the Naples Zoo- 

 logical Station and home specimens of Flahelligera affinis, 

 Sars, I cannot but conclude that specifically they are 

 identical. The slight differences there are, are amply 

 accounted for by the varying states of contraction con- 

 sequent upon divergent preservative agents and to the 

 considerable difference in latitude between the two 

 habitats. Quatrefages could certainly never have seen a 

 specimen of the Naples S. diplocha'itos else he would not 

 have defined the genus Siphouostoma as destitute of hairs 

 or glandular papillae. 



Family. — Terebellid^.. 



^Ampliitrite figulus, (Dalyell). 



Hab : Puffin Island and Egremont. 



The A. Johnstoni of Malmgren according to Marenzeller. 

 The presence of 24 pairs of notopodial fascicles of capill- 

 ary setae is characteristic of this species. Tube of mud, 

 the corrugated end projecting about an inch above the 

 surface of the mud-flat where it is found. 



Terebella nehulosay Montagu. 



Dredged off Port Erin. 



Lanice conchilega, (Pallas). 



Abundant on the littoral, and taken frequently in the 

 dredge. 



Thelejjus cincmnatus, (Fabr.) 



Hab : 4, 8, 10, 13, 14, P. Littoral to '22 fms. 



Shares with Lanice conchilega the honour of being the 

 characteristic species of Terebellidsfi of this district. It 

 however has not so high a littoral range as the latter, but, 

 on the other hand, it is, of the two, much the more 

 frequently found in deep water. 



Since Malmgren's time the name has continually been 



