276 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.43. 



Suborder CYCLOSTOMATA. 



CRISIA CRIBRARIA Stlmpson. 



Crisia cribraria Stimpson, 1853, p. 18. 



Crisia ebumea var. cribraria Verrill, 18796, p. 28. — Whtteaves, 1901, p. 110. 



Locality. — Fourteen miles south of Cape Sable, several well- 

 developed colonies with ovicells. 



The validity of this species has been in doubt ever since Stimpson 

 described it, and several authors have, apparently without studying 

 the material, placed it under various others as a synonym. There can 

 be no doubt, however, that it is a good species. The writer has rede- 

 scribed and figured it in a recent paper.^ 



7 CRISIA DENTICULATA (Lamarck). 

 Crisia ebumea var. denticulata Verrill, 18796, p. 28. 



Along with the preceding species were some specimens that appear 

 to belong to denticulata, but as no ovicells are present the identification 

 can not be made with certainty. 



CRISIA EBURNEA (Linnaeus). 



Localities. — Along with the two preceding and also at Browns Bank. 

 Only a few small specimens were taken, but ovicells were present in 

 both cases. 



LICHENOPORA VERRUCARIA (Fabrlcius). 



Madrepora verrucaria Fabricius, 1780, p. 430. , 



Diastopora patina Verrill and Smith, 1873, p. 707. 



Discoporella verrucaria Verrill, 1875a, p. 414; 18756, p. 41; 18796, p. 28. — Rink, 

 1877, p. 443. 



Locality. — Fourteen miles south of Cape Sable, two colonies on 

 hydroid stems. 



LICHENOPORA REGULARIS (d'Orbigny). 



Locality. — At Shoal Tickle, Labrador; there was found one com- 

 plete colony and portions of two others. This seems to be d'Orbigny's 

 species without doubt, though the size is larger than anywhere recorded 

 (fully one-half inch across), the rays of zooBcial tubes are by no means 

 regular and the zoarium is much warped. In all the Lichenoporse the 

 form of the zoarium is more or less adjusted to the substratum and the 

 arrangement of the zooecial tubes is modified accordingly. I have 

 compared these specimens with one so named by Norman in the collec- 

 tion of the Geological Survc}' of Canada. 



TUBULIPORA ATLANTICA (Johnston). 



Idmonea atlantica Smitt, 1872, p. 6. — Packard, 1867, p. 270. — ^Whiteaves, 1901, 



p. 111. 

 Idmonea pruinosa Stimpson, 1853, p. 18. 



Localities. — Browns Bank, rare; 14 miles off Cape Sable, common. 



> Bryoz/oa of the Woods Hole llegion, Bull. U. S. Fish Com. for 1910, p. 215, pi. 18, figs. 7, ^a, and 76. 



