74 Rev. T. Hincks's Contributions towards 



ciated. I am not acquainted with any other species of 

 Setosella. 



Log. Funchal Bay, in 30 fathoms. 



Hab. On small shells and fragments of shell. 



Family Cribrilinidae. 

 Cribrilina, Gray. 



Cribrilina radiata, Moll, var. (PI. X. fig-. 1.) 



Amongst several varieties of this variable species there is 

 one of great beauty which merits special notice. The cells 

 are sometimes much elongated and slender, always delicate in 

 texture, and with a bright and silvery surface. The punctures 

 range continuously across the front wall ; and the lines are sepa- 

 rated by very inconspicuous ridges ; there is no central keel. 

 The triangular space and pore below the orifice are present ; 

 but the former is not a prominent feature. The avicularium 

 is of remarkable length, often nearly as long as the cell, 

 narrow and pointed, and not raised (PI. X. fig. 1). This 

 form has some points in common with the Lepralia Pouilletii 

 of Busk, described from a Madeiran specimen ; but the latter 

 is destitute of avicularia — a difference, however, of small sig- 

 nificance. The Flustra Pouilletii of Audouin, with which 

 Busk identifies his Madeiran species, is clearly, in my judg- 

 ment, a variety of C. radiata ; and the latter is probably 

 nothing more. 



The avicularium of this species is liable to many variations ; 

 but I have never seen it so much elongated as it is in the pre- 

 sent form. 



Of the genus Cribrilina few recent species have been 

 recorded. Besides the five which occur on the British coasts 

 {radiata, figularis, annulata, punctata, and Gattyai) I only 

 know of three — Lepralia cribrosa, Heller, allied to the last- 

 named, Flustra Jaubertii, Audouin (probably), and Cribri- 

 lina Jloridana, Smitt — which are referable to it. The last 

 may be a mere variety. 



Family Microporellidae. 



MlCROPORELLA, Hilicks. 



Microporella decorata, Reuss. 



Lepralia decorata, Reuss, Foss. Pol. cl. Wien. Tertiiirbeck. 89 ; ftlan- 

 zoni, Bryoz. foss. Ital. Contr. 2, p. 4, pi. x. fig. 2>'3. 



Zooocia ovate, separated by deep sutures, highly calcified, 



