ON FOSSIL POLYZOA. 133 



Group a. 



2. Crisia eburnea, Linn. 3. Crisia denticulata, Lamk. = Crista 

 subcequalis, Reuss, ' Paliiont. Stud.' = Crisia gracilis, Roemer, 

 ' Norddeutsch. Tert. &c.' p. 23, tab. iii. 3 = Crisia, undescribed, 

 'Australian Bryozoa '=Crisia, undescribed, 'Australian Bryozoa,' 

 C. elongata type = Crisia denticulata ? Busk, ' Crag Polyz.' p. 

 93, pi. i. fig. 8. 



J2a»j/e.— Scotcb. Glacial ; Post-Pliocene, Montreal (Dawson) ; Suffolk 

 Crag, Palaeolithic (Bell) ; Miocene, Australia, undescribed, 1 but 

 in my cabinet; Anstro-Hungarian Miocene, Reuss. I see no 

 reason for separating from the above group the North Dutch 

 species of Roemer, or the North Italy species of Reuss. 



4. Crisia fistulosa, Heller (non Busk), ' Bry. Bay of Naples, Ann. 



Mag. Nat. Hist.' Ap. I860, p. 268 = C. Haueri, Rss., ' Foss. Polyz. 

 des W. Tertb.' p. 54, pi. vii. fig. 22-24 = ? 0. eburnea, Manzoni, 

 ' Bri. Foss. del Mioc. Aust.-Ungh.' p. 3, pi. i. fig. 1. 

 Range. — Miocene, Nassdorf ; Berchtoldsdorf and Wieliczka, Pliocene ; 

 Rhodes (M.). Living, Naples. 



5. Crisia elongata var. angustata, Waters, 'Bry. Bay Nap.' he. tit., 



p. 269, pi. xxiii. fig. 4 = ? 0. Edwardsii, Reuss, ' Die Polyp. W. 

 T.' p. 53, pi. vii. fig. 20 = ? C. Edwardsii, Manz. ' I Bri. Foss. 

 Aust. ed Ungh.' The above are the suggested identifications 

 by Mr. Waters. 

 Range. — Miocene, Austro-Hnng. Living, Naples. 

 I have a fragment of a species with ovicell like C. conferta, Busk 

 (' Brit. Mus. Catalogue,' pi. vi. A, pt. iii. p. 7), among my material from 

 Montecchio Maggiore. I would be glad if local students would search 

 for and describe the form. 



The following are given by Reuss in bis ' Foss. Pol. des W.' as occur- 

 ring in the Marine Limestone of Nussdorf and Eisenstadt. 



Crisia Edwardsii, Reuss ; C. Homesii, R. ; C. Haueri, 2 Rss. ; Crisidia 

 vindobonensis (Unicrisia) . 



Group II. Incrustata, D'Orbigny. 



' Centrifugenes empalees a cellules non operculees,' D'Orb. (pars) ; 

 ' Inarticulate seu adfixte,' Busk, ' Crag Pol.' ; Inckttsta, D'Orb., Smitt. 



Zoarium continuous, calcareous, not divided by corneous joints, or 

 furnished with radicle tubes ; erect and attached by a contracted base, or 

 recumbent and immediately adnate, either wholly or in part. 



In my last ' Brit. Assoc. Report on Foss. Polyzoa ' (Southport, 1883), 

 I felt compelled to found the Family Stomatoporichn for the inclusion 

 of peculiar Palaeozoic and Massozoic forms. In this grouping I took 

 Stomatopora as the type of the family, The Recent Stomatojporce are, 

 however, so multiform in habit that it seems to me unwise to increase the 

 difficulties by placing in the way of the student any ill-digested or 

 unnatural associations. But the case may be stated thns : the_ Stomato- 

 pora? of the older rocks differ in many points from those existing in our 

 present seas. The simple forms such as 8. granulata, Bdw., agree with 



1 Since this was written Mr. Waters has sent his promised paper on the 

 Australian Cyclostomata to the Geol. Soc. (read June, 1884), and it will be found in 

 vol. xl. Quart. Jour. Geol. Soc. (G. R. V.) 



- C Haueri, Rss. ; similar to C. eburnea Lamx., Rss. 



