280 SIDNEY F. HARMEB. 



opercula usually elongated, witli nearly parallel sides ; the main 

 sclerite A-sliaped; submarginal teeth developed round the 

 entire free border of the operculum, the proximal ones small 

 or vestigial, the distal ones long and recurved, a opercula 

 with numerous submarginal teeth ; ai'ch formed by the main 

 sclerite usually somewhat pointed. 



(a) Abrolhos Islet, coast of Brazil, 20 fathoms, Voy. 

 "Beagle," Darwin Coll. (B. M., 54.11.15, 222). 

 (Type.) 

 {h) Abrolhos Islet, Busk Coll. (B. M., 99.7.1, 403). 

 (c) Pedro Bank, 40—50 miles S. of Jamaica, 10 — 12 

 fatboms (on coral), J. E. Duerden, Esq. (C. M,, 

 30.6.99). 

 {d) St. Vincent, W. I. (B. M., 40.10.23, 18). 

 (e) Off Honolulu, Challenger Coll., 20—40 fathoms 



(B. M.). 

 (/) Port Molle, Queensland, 12—20 fathoms, H.M.S. 



"Alert" (B. M., 82.2.23,443). 

 ig) Tizard Reef, China Sea, 27 fathoms (B. M., 89.8.21, 



10). 

 {h) Singapore, Hincks Coll. (B. M., 99.5.1, 260). 

 {i) St. 208, Challenger Coll. (Philippine Is.), 17th Jan., 



1875, 18 fathoms (B. M.). 

 {j) John Adams' Bank,i H.M.S. "Herald," Busk 



Coll. (B. M., 99.7.1, 407). 

 {k) ? loc, "On Meandrina," Busk Coll. (B. M., 



99.7.1, 402). 

 (/) ? loc, "Off Brain-stone," Hincks Coll. (B. M., 

 99.5.1, 262). 



[Florida, 15 — 37 fathoms, Smitt ; Japan, slight 

 depths to 200 fathoms, very common, Ortmann.] 

 The figure illustrating the original description of this 

 species was published in the first part of the ' British Museum 

 Catalogue' (1852), the name Membranipora grandis ap- 

 pearing in the explanation to the plates. The description 

 was published in the second part of the Catalogue (1854). 



' See p. 254. 



