I, 2 



(I2 4 ) 



3 



(125) 



4 



(126) 



EXPLANATION OF PLATE II. 



[The figures in parentheses refer to the numbers in the List of Species. ] 



Figs. I, 2 (124) Acerate spicula. Springhill, Co. Derry. 



Aitenuato-acuate spiadum. Springhill, Co. Derry. 

 Moniliform attenuato-acuate spiculum. Springhill, Co. 



Derry. 

 (127) Furcated porrecto-ternate moniliform spiculum. Keady 



Hill, Co. Derry. 

 Equiangular triradiate spiculum. Moira, Co. Down. 

 Spiculated equiangular triradiate spiculum. Moira, 



Co. Down. 

 Incipiently expanso-temate spiculum. Glenariff, Co. 



Antrim. 

 Expando-ternate spiculum (immature). Cave Hill, 



Co. Antrim. 

 Expando-ternate spiculum. Sallagh Braes, Co. Antrim. 

 Expando-ternate spicula, with cylindrical radii. Sallagh 



Braes, Co. Antrim. 

 Furcated attenuato-patento-ternate spiculum (constricted). 



13^. Plane of the radii. Slieve Gallion, Co. Derry. 

 Fzircaled attenuato-patento-ternate spicula. Sallagh Braes, 



Co. Antrim. 

 Furcated attenuato-patento-ternate spiculum . lib. Plan 



of the radii. Springhill, Co. Derry. 

 Furcated attenuato-patento-ternate spiculum . Cave Hill, 



Co. Antrim. 

 Recurvo-ternate spiculum. 19 b. Plane of the radiu 



Sallagh Braes, Co. Antrim. 

 Porrecto-ternate spiculum. Torr Head, Co. Antrim. 

 Porrecto-ternate spiculum. Sallagh Braes, Co. Antrim. 

 Porrecto-ternate spiculum. Sallagh Braes, Co. Antrim. 

 Recurvo-dentate qualemate spiculum. 23 b. Plane of the 



radii. South of Ballycarry Station, Co. Antrim. 



The figures are all enlarged — the line at the side of each indicates the 

 natural size. 



6 



(128) 



7 



(129) 



8 



(130) 



9 



(I3D 



10 



(130 



11, 12 



(132) 



13 



(133) 



14, 15, 



16 (134) 



17 



(135) 



18 



(136) 



19 



(137) 



20 



(140) 



21 



(141) 



22 



(142) 



23 



(148) 



