882 PROF. S. J. HICKSOX ox THE 



the type specimen of Er7-ina (L.) antarctica and comparing ife 

 with the specimens from various localities mentionerl at the 

 beginning of this paper. I have found, as I expected, the same 

 difficulties in the determination of species that are met with in 

 the systematic zoology of other zoophytes. My impression is 

 that all the specimens from New Zealand belong to one distinct 

 species, that the specimen from the Cape of Good Hope belongs 

 to another distinct species, and that both these species are distinct 

 from the four species that have already been described. But 

 there is so much variation in the specimens from New Zealand 

 that it is clearly desirable to have a careful description of each. 

 I have also added for convenience' sake a new description of the 

 two earlier species for comparison. 



Errina (Labiopora) nov^ ZELANDiiE. (Facies Ramosa.) (PI. 

 XCIY. fig. 3 & PI. XCVI. fig. 9.) 



This specimen was obtained from Preservation Inlet, W. coast of 

 South Island of New Zealand, in about 3 fms. of water, and was 

 lent by the Canterbury Museum to Prof. Benham. The colony 

 is flabelliform, with prof use ramification but without anastomoses. 

 The terminal branches are usually delicate. This may be ex- 

 pressed in figures by saying that at a distance of 3 mm. from the 

 extremity of a terminal branch the diameter may be not more 

 than 1 mm. The larger branches are slightly compressed in the 

 plane of the flabellum ; the others circular in section. 



Colour: salmon -pink*. 



Surface minutely granular, substance of the coenosteum 

 minutely reticulate. 



Grooved spines (narial processes) numerous, arranged in rows, 

 rarely in clusters. The groove, in neai-ly all cases, turned directly 

 away from the apex of the branch. 



Gasteropores more numerous on one side of the flabellum than 

 on the other, sometimes provided with a lip. Diameter of gas- 

 teropores 0'27 mm. 



Large dactylopores 0"06 x 0'16 mm. (The large kind of dactylo- 

 pores of the genus are protected by the grooved spines, and the 

 measurements given indicate approximately the width x depth of 

 the groove at its deepest part.) 



Small dactylopores rare or absent. The small dactylopores are 

 often difficult to determine until the coral is thoroughly cleaned 

 by boiling in eau de javelle. I have examined and re-examined 

 a small branch thus cleaned and can find no small dactylopores, 

 but as I have only a, small amount of material at my disposal, 

 and as Benham states in his MS. notes that the small dactylo- 

 pores are " rare,'*' I cannot deny their existence. 



* There are so niaiij' shades of red to be found in cornls that I liave used tlie 

 technical term which expresses the shade of red that comes nearest to that shown 

 by this coral. 



