160 Proceedings of the Royal Irish Academy. 



Plate XIV. 

 Fig. 



1. Carlgrenia desiderata, n. gen., n. sp. Xat. size. (A medium-sized speci- 



men.) 



2. Bolocera tuediae, Johnst. Nat. size. 



:;. Actinavgt richardi, .Marion. Xat. size. 



4. C'hondrodactis pulchra, n. sp. Xat. size. 



;,. Actinostola atrostoma, a. sp. Medium-sized specimen.) Nat. size. 



6. One half of the upper portion of a specimen of Chondrodactis duplicata, 



n. sp., divided vertically so as to show oral disc, position of 

 sphincter, mouth, &c. Xat. size. 



7, 8. Two Bingle tentacles of Actinostola atrostoma, a. sp. Xat. size. 

 9. A richardi, Marion. Nat. size. 



10. ' ' mm' half of a vertically divided specimen, to show 



general relationship of parts Nat. si 



11. Cyml , n. sp. A single tentacle. Xat. size. 



Plate XV. 



1. Aci ii. sp. One half of a medium-sized specimen, vertically 



ili\ how positions and relationship of parts. Nat. size. 



2. View of tig. 1. much reduced, from the side. 



:;. Chondrodactis duplicata, n. sp. Small specimen. Nat. size. 

 4.1 . Veil ill. Nat. size. 



<„■/. richardi, Marion. Nat. size. 

 7. Single tentacli A ma, n. sp. Xat. size. 



Single tentacle of A ■ richardi, Marion. Very slightly enlarf 



9. - tentacle o VerrilL Nat. size, 



in. Half the crown of a contracted specimen of Actinatige ricliardi, Marion. 

 A little enlarged. (The whole of this specimen is shown nat. size 

 in ti. 

 11. Aclinavgi Marion. Xat. size. 



Plate XVI. 

 /■ , i_2 mdravn .3. Obj. ,'... {Oil Imm.) 



1-4. Cells from mesogloea of tentacle. (Actim uiti > 



5. Gland-cell from tentacle ectoderm. Actinernvs saginatus.) 



6-10. Cells from i i of body-wall (at different levels). [Actinemus 



11. Sting-cells, thick-walled, from body-wall ectoderm. (Actinostola atrostoma.) 



12. S i cell from body-wall ectoderm. Actinostola atrostoma.) 



