96 SIDNEY F. HAEMER. 



name of T. verrucaria, Fabr., accidentally given as T. ver- 

 rucosa in one place on p. 328. The name employed by Milne 

 Edwards cannot be retained, since the Madrepora verru- 

 caria of Fabricius is a Lichenopora. From an inspection 

 of the original description and figures I can see no sufficient 

 reason for believing that the fossil Diastopora plumula, 

 Reuss, is identical with the present species or with T. 

 flabellaris, Fabr., although Pergens (34, p. 9) considers the 

 specific name given by Reuss to be the correct name of 

 one of the forms to which the name T. flabellaris has 

 been ascribed. 



T. phalangea is common in the Salcombe Estuary, at a 

 depth of 3 to 5 fathoms, on red seaweeds, where it occurs in 

 company with T. plumosa, and on dead shells. It is equally 

 common at Plymouth from 3 to 15 fathoms ; and I believe 

 that the greater number of specimens of Tubulipora found 

 on shells in the shallower parts of the Plymouth district 

 belong to this species. In the deeper water (20 to 30 fathoms) 

 a considerable proportion of the specimens may belong to the 

 form identified by Mr. Hincks as T. lobulata, Hassall ; but 

 I am at present unable to express any positive opinion with 

 regard to Hassall's species. 



I have seen a typical specimen of T. phalangea, kindly 

 lent to me by Professor M'Intosh, from the Outer Hebrides ; 

 but the rest of my material has been obtained from Devonshire. 

 T. phalangea is very variable in the form assumed by the 

 colony. It may consist merely of a single small, fertile 

 lobe, the whole colony being then pear-shaped, and closely 

 resembling the Obelia tubulifera of Lamouroux (25, p. 81, 

 pi. Ixxx, figs. 7, 8), a Mediterranean form with which it may be 

 identical. It may consist of a small number of well-separated 

 lobes, or it may have an almost completely circular outline. 

 Colonies of the last type may reach a diameter of nearly an 

 inch. The complexity of the ovicell varies greatly with the 

 size of the colony, the large colonies having very complicated 

 ovicells with numerous palmately arranged lobes extending 

 between the radial series of zooecia ; fig. 5 being by no means 



