1907.] Records of the hulian I^Tuscidh. 193 



avicularium is borne on a spout-like protuberance of the front 

 wall of the zooecium, and is an addition, not a substitute for 

 the others. Ooecia are large and rounded and granulated, like the 

 walls of the zooecia. 

 Locality. — Pedro vShoal, 25 fathoms 



65. Retepora tuhulata, Busk. 



Voy. H.M S. " Challenger," pt. xxx (vol. x), p. 121. 



In the " Challenger " report, one distinction given between this 

 species and R. philippinensis is that the celluliferous surface of the 

 zoarium is in the latter outside, instead of inside the tubular alveolae. 

 In the present specimen the first wide, vase-shaped fold of the zoa- 

 rium has the celluliferous surface on its inside aspect, but the tubu- 

 lar branches, rising from this, have the celluhferous surface on their 

 outside surface. Ooecia are plentiful and the forked avicularia is 

 present at the bases of many of the fenestrse. 

 Loc«/^V^gs.— Caspar Straits (J. S. Gardner) ; Stations 59, 77, Indian 



Marine Survey ; southern portion of Malacca Straits (S.S. 



" Sherard Osborne"). 



66. Retepora prodiic^a, Busk. 



Voy. H.M.S. '' Challenger" pt. xxx ivol. x), p. 108. 

 Locality. — Pedro Shoal, 25 fathoms. 



67. Retepora moniUfera, MacGil. 



Trans. Roy. Soc. Vict., vol. xx, p. 105, 1883. 



A fragment, which corresponds generally with MacGillivray's 

 species, as described in McCoy's Prod. Zool. Vict., vol. i, decade x, 

 p. 19, has three very marked features, i. The enormous avicu- 

 laria, ending in sharp points, which are placed in front and at the 

 bases of most fenestrse of the zoarium. They ])ass right through 

 the opening, and the rostrum has a tooth on either side of where 

 the point of the mandible rests. 2. The very prominent ooecia 

 which stand up almost at right angles to the orifice of the zooecia 

 and end in a point, formed by the tip of the vertical portion of the 

 beaded band on the front wall of the ooecium. 3. The large, raised 

 avicularia with short, curved mandibles present on the front wall of 

 some zooecia. Of these features the long pointed avicularia agree 

 with ^MacGillivray's form Munita, except that they are situated 

 at the bases of, not above, fenestrse. In the forward bend of the 

 vertical beaded line on the ooecia, there is a resemblance to form 

 Sinuata. There appears to be no absolute agreement with an}^ one 

 form mentioned. 

 Locality. — Station 148, Indian Marine Survey. 



68. Retepora pocillum, Thornely. 



Suppl. Report XXVI to Herdman's Ceylon Pearl Oyster Fisheries, 

 pt. iv, p. 125. 



