KOTES ON SOME SPECIES OF RETEPORA AND ADEONELLA 



front of the middle. Avicularia (d) conspicuously large, present on 

 most zooecia nearly in the centre; their mandible triangular, slightly 

 curved, hooked at end, with oblong lucida in the centre and with the 

 attachment for the two tendons of occlusor muscle; rather high up near 

 the distal end. Mature ooecium (a) moderately small, subspherical, 

 smooth-surfaced, with a small peak in the middle of lower margin ; 

 immature ooecium with much larger opening and without peak in the 

 lower margin. Doisal surface nodulous, perforated only in the parts 

 close around fenestrae, with irregularly developed vibices. In some of 

 the areas surrounded by the vibices there is an occurrence of the same 

 kind of avicularia as that of the ventral surface. 



This new species is represented in the collection by a dried 

 specimen from Osaka and numerous colonies in alcohol from Tomo 

 Gulf in Prov. Bungo. The Osaka specimen is a large convoluted and 

 non-pedunculate zoarium 7 cm. broad and 3.5 cm. high. The Tomo 

 specimens are much smaller and pedunculated. 



The species greatly resembles Retepora pacifica Robertson in 

 many respects, but differs from it in the total absence of oral spines 

 and in the dorsal avicularia being immersed. 



4. Metepora nionilifera unibonata MacGillivray. 



R. monili/era var. timbonata MacGillivray 1865, p. 8. — McCoy 1885, p. 23 ; pi. 

 37, figs. 1-3. — Wateis 1SS9, p. 20. 



R. Ursuta Busk 1SS4, p. 119; pi. 26, fig. 4. 



Numerous small colonies and fragments in the collection may be 



identified with the above form. The localities are : off Niijima (depth 



unknown); Yodomi (54-62 fms.) ; Onigasé (117-156 fms.). In the 



specimens from these localities, the oral spines are limited in occurrence 



to marginal zooecia of the distal parts of stock. 



5. Jtetepora tessellata Hincks. 



Retepora tessellata. Hincks 1878, p. 35 ; pl. jç, figs. 9-12. — Busk 1884, p. 112. — 

 McCoy 1885, p. 29; pi. 99, figs. 4-8. 



Of this species there are in the collection a few well preserved 



