Natural History of East Finmarlc, 101 



A pair of avicularia with mandible pointiug upwards are 

 often developed on the side walls of the oral openinj^. 

 Oooecia subglobose and imperforated. No pore-chambers. 



Gephyrotes nitido-pimctata (Smitt). (PI. YIII. figs. 12, 13.) 



1868. Escharipora Jtguluris, forma mtido-punctata, Smitt, " Kritisk 



Fiirteckning, &c." p. 4, pi. xxiv. figs. 2, .3. 

 1873. CribrilitMi nitido-punctata, Smitt, Floridan Bryozoa, pt. 2, p. 22. 

 1895. Cribrilma mtido-jnatctatay Noidgaard, Bergen Mus. Aarboy, 



1894^95, p. 19, pi. iv. fig. 3. 



The type specimens of this fine species described by Smitt 

 were taken by Loven in 40-60 fathoms at Hauiiuerfest. 

 Examples in my own collection are I'rom the Bergen Fiord, 

 where I found it to be not uncommon in 1878, and West 

 Greenland, ' \ alorous/ 1875 ■^. Nordgaard has also re- 

 corded it from the Trondhjem Fiord. 



Genus Crtbrilina, Gray. 



Type, CrihriUna punctata (Hassall). 



Gray in instituting this genus placed only one species 

 in it, namely Lepralla punctata, Hassall, which, therefore, 

 must be the type of the genus. Yet, notwithstanding this, 

 Hincks, in his paper " On the Classification of the British 

 Polyzoa'' (Ann. & Mag. Nat. Hist., Feb. 18?9), substituted 

 " Cribrilina^ Gray. Type, C. radiata." The next step to 

 confusion was taken by Jullien, who, in his 2)apcr on " Costu- 

 lides^^ ( = Cribrilinidie), instituted a lai^ge number of genera, 

 and, describing CribrUina, followed Hincks in making 

 C. radiata the type, and then gave to that genus characters 

 which would exclude the true type, C. punctata, from it ! 

 Such is the unfortunate result here, as m so many other 

 instances among the Polyzoa, of the disregard of the simplest 

 laws of nomenclature ! 



Cribrilma punctata, Hassall. — I have already noticed some 

 of the variations in the structure of the zooecium of this 

 species. The zoaria are of small size, rarely reaching as 

 much as half an inch in diameter. The avicularia, when 

 developed, are usually only on one side of the oral oj)ening, 

 rarely on both sides. Oral opening with lower lip not 

 greatly thickened but generally centrally produced, often 

 acutely so. Oral spines four. In cells bearing ooecia two 

 lateral spines often remain and attain a great size, arching 

 forwards and upwards. Ooecium lai'ge, globose (see Hincks, 



* On the same stone with a specimen of this species was also B/uih- 

 dopleura Xormuni, Alluiau, a genus which is an interesting addition to 

 the tauua of Greenland. 



