214 Papers from the Marine Biological Laboratory at Tortugas. 



larium on the lower lip of occasional zocecia of L. labrosa from Madeira 

 (i909» P- 309)- 



Genus Cellepora Linne, 1767. 



Cellepora dichotoma Hincks. 



HiNCKS, 1862, p. 304. — Smitt, 1873, P- 53' pi- IX, fig. 193-198 {C.avicularis). — Jelly, 

 1889, p. 51, gives synonymy and also, p. 46, includes Smitt 's references in 

 C. avicularis Hincks. — (?) Verrill, 1878, p. 305 (C. avicularis) ; (?) 1901, p. 

 54 (C. avicularis). 



Two well-developed specimens, 0.5 inch or more in height, taken at a 

 depth of ID fathoms; one was attached to a hydroid stem. There can be 

 no doubt that these specimens belong to C. dichotoma instead of C. avicularis, 

 as I have compared them with authenticated material from England. 

 Smitt's figures, which he refers to C. avicularis, undoubtedly are C. dicho- 

 toma, as Hincks (1880, p. 404) has already pointed out. Smitt indicates 

 the bathymetrical distribution as from 9 to iii fathoms. 



Verrill's records for C. avicularis at Fort Macon, North Carolina (1878), 

 and Bermuda (1901) in all probability apply to dichotoma, though it is 

 possible that the former should be C. americana Osburn (191 2, p. 238), 

 which Verrill at another time (1879B) listed as avicularis. C. americana and 

 C. dichotoma have been taken at Beaufort, North Carolina, by the writer. 



Cellepora verruculata Smitt. 



Smitt, 1873, p. 50. — Busk, 1884, p. 150 (Escharoides verruculata). — Jelly, 1889, 

 p. 60. — Calvet, 1906, p. 444. 



A number of colonies taken on shells and in similar situations from low 

 water to 15 fathoms. Smitt described the species from a single specimen 

 taken by Pourtales west of the Tortugas in 42 fathoms. Recorded by Busk 

 (1. c.) off Heard Island at 75 fathoms, and by Calvet (1. c.) for the Mediter- 

 ranean Sea, "Naples, c6tes de Corse, Cette." 



The zocecia undergo a remarkable change in appearance with advancing 

 calcification. 



Genus Lagenipora Hincks, 1877. 



Lagenipora ignota Norman. 



Norman, 1909, p. 309, pi, 42, figs. 10-13. 



A colony taken at Tortugas in 12 fathoms on a dead colony of Mucronella 

 bisinuata and another at 10 fathoms on a Vermetus shell seem to be identical 

 with Norman's species. They differ in not rising into rounded branches, 

 but the small size of the colonies easily accounts for this. The character of 

 the zooecium, with the pair of oral avicularia, is identical, and the ooecia 

 also. The large spatulate avicularia, said by Norman to be present in 

 extraordinary numbers, are but sparsely represented. 



Hitherto known only from the Madeira Islands, where it was taken at 

 70 fathoms (Norman). 



