MOLLUSCOIDA. 49 



Family Escharidae. 



Genus Eschara, Ray. 



Eschara SJcenei, Ellis & Sol. ; Busk, Catal. p. 88, pi. 122. 



A remarkably beautiful specimen on Cyprina islandica from 

 the coralline ground. 



Suborder CYCLOSTOJIATA, Busk. 



Family TubuliporidaB, Johnst. 



Genus Tubulipora, Lamarck. 



Tubulipora serpens, L. ; Johnst. Brit. Zooph. p. 275, 

 pi. 47. f. 4-6. 



On zoophytes and shells from deep water ; very abundant 

 and characteristic. 



Genus Alecto, Lamx. 



Alecto granulata, M.-Ed. ; Johnst. Brit. Zooph. p. 280, 

 pi. 49. f. 1 & 2. 



On stones and shells from deep water ; not rare. 



Family Diastoporidae, Busk. 



Genus Diastopora, Lamx. 



Diastopora obelia, Flem. ; Johnst. Brit. Zooph. p. 277, 

 pi. 47. f. 7 & 8. 



On shells and stones from deep water. 



Genus Patinella, Gray. 



Patinella patina, Lamarck ; Hincks, Catal. Zooph., 

 loc. cit. p. 468. 



Abundant on corallines and shells from deep water, especially 

 on Mytilus modiolus. 



H 



