Sponges from South Australia. 221 



name is required, which for the present, or provisionally, might 

 be " Spongelida," with " Spongelina " for the group, and 

 " Spongelia " for the single genus, " with power to add to it," 

 as they say. Thus : — 



Family. Group. Genus. 



Sponoelida Spowjelina Spongelia. 



The next group in my original classification above the 

 Sarcocornea, now embodied in the Arenida (see pp. 2 1 5 and 

 218), is no. 14, the u Otahitica," so named from Ellis's 

 representations of three " Otaheite " sponges in 1786 (Nat. 

 Hist. Zoophytes, Ellis and Solander, tab. lix. figs. 1-3), 

 afterwards called by Esper "Spongia otahitica" which term 

 I adopted for a vast number of species and varieties of this 

 kind unnamed and undescribed, but well sketched structurally 

 and morphologically in my original diagnosis of the group. 

 They are all strongly characterized by their papyraceous 

 form, seldom exceeding g in. in thickness, and sometimes as 

 thin as writing-paper itself ; hence Hyatt's term " Phyllo- 

 SPONGIAD^" (Mem. Bost. Soc. Nat. Hist. 1877, p. 540) for 

 the " family " is very appropriate and acceptable, for, from 

 what I have just stated, the group will in all probability 

 hereafter have to be subdivided, and then a family name must 

 be supplied, so at once I would propose " Phyllospongida," 

 Hyatt, merely altering the patronymic affix to suit my termi- 

 nology. ... 



Of this family there is only one specimen in Mr. Wilson's 

 collection to show that it is represented on the south coast of 

 Australia ; but this is otherwise abundantly confirmed by 

 several specimens from thence having passed through my 

 hands, as well as by the three species described by Hyatt 

 {op. et loc. cit. p. 543) under the generic name oi u Carterio- 

 spongia." As, however, my object at present is, as before 

 stated, chiefly to record, through Mr. Wilson's specimens, 

 what is to be found on this coast for future identification, this 

 specimen, which also appears to me to represent a new species, 

 may be named and described as follows : — 



Carteriospongia calicifbrmis, n. sp. 



Specimen dry, thin, shallow, cup-like, with wide undulating 

 brim, short thick stem, and small, erect, proliferous crest in 

 the bottom. Consistence firm. Colour now light grey. 

 Surface arenaceous, uniformly granulated. Pores on the outer 



Ann. ct- Mag. N. Hint. Ser. 5. Vol. xv. 16 



