238 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



Polynoe I have ever met with. Each of the pellucid body 

 scales had on the hinder margin a crescent of orange-hued 

 pigment, varied on the two head scales by the orange 

 margin being carried completely round as a resplendent 

 girdle. 



Sub-family. — Sigalionin^e . 



* Sthenelais boa, (Johnston). 



Hab : P, M, Mp, under stones from mid-tide to low- water. 



Malmgren (loc. cit.) stated his belief that Kathke's 

 S. idunce is synonymous with Johnston's S. boa, a view 

 with which I unreservedly concur. He, however, in his 

 list of synonyms, gives Cat. Br. Mus. 1865 as date of 

 Johnston's name, and omits reference to the British 

 author's prior description and naming of the species in 

 question, viz : 1833, in Loudon's Mag. of Nat. Hist. In 

 this way Bathke's nomenclature, dating from 1843, is 

 wrongly given priority and I gladly follow Prof. M'Intosh's 

 lead in the retention of our countryman's title. 



S. boa. is in this district essentially a shore species. I 

 have never taken it in the dredge but always littoral. The 

 nearly related species S. limicola, on the other hand is 

 characteristic of a lower zone, being invariably obtained by 

 dredging. The fact that in "Invert. Fauna of St. 

 Andrew's" M'Intosh notes that storms cast up abundance 

 of the latter species, and gives the habitat of S. boa as 

 between tide mark would point to this limitation of 

 vertical range as a constant feature. 



* Sthenelais limicola, Ehlers. 

 Hab : 12, 13. 



As noted all specimens without exception were taken 

 in the dredge, at depths varying from 18-22 fathoms. 

 The present is the first recorded instance of the occurrence 

 of either the present or the preceding species in this 

 district. 



