Plate 13 



Fk;s. 1-4. Velumella philippinensis, new species (p. 129). 



1. Zoarium incrusting a shell, • 20, showing the false dimorphism. 



The ancestrula is an ordinary zooecium. 

 D. 5147. Sulade Island. 



2. An example, X20, with small regular zooecia, showing the zoarial 



margins. 



D. 5141. Jolo Light, Jolo. 



3. A specimen, X20, in which the ancestrula is an onychocellarium. 



D. 5179. Romblon Light, Romblon. 



4. Specimen, X20, with ectocyst, opercula, and onychocellarian mandi- 



bles. 



D. 5147. Sulade Island. 

 5 7. Rectonychocella grandipora, new species (p. 127). 



5. Surface of the bilame'llar zoarium, X20. The zooecia have a granu- 



lated cryptocyst. 



6. Another example, X20, in which some opesia have a convex proximal 



border. 



D. 5579. Darvel Hay, Borneo. 



7. Fragment, X20, with zooecia having an orbicular opesium. 



1). 557 1. Simaluc Island. 

 s. Dacryonella ogivalina, new species (p. 132). 



The type specimen incrusting a shell fragment, X20. 

 1). 5147. Sulade Island. 

 9-12. Dacryonella minor Hincks, 1885 (p. 131). 



\). Specimen, ■ (i, incrusting a gastropod and showing the influence of 

 the substral lim on the size of the zooecia. 



10. An example, ■ 20, with small zooecia. 



1 1. A portion of Figure !». 20. 



12. Zooecia, ■ 20, preserving their ectocyst and opercular valve. 



D. 51 l.V Jolo Light, Jolo. 

 (580) 



