MUSEUM OF COMPARATIVE ZOOLOGY. 211 



The rows of calicles are very irregular, generally forming a broad, flat furrow, 

 with the pores for the tentacular zooids rather removed and in the form of 

 small transverse slits on the side of a ridge, as in D. cervina. The branches 

 grow out from one edge of the furrow, causing the latter to widen out and the 

 other edge to extend across the new-formed branch. Sometimes the rows of 

 calicles become double. The only specimen obtained has very few and indis- 

 tinct gonophores. Color whitish ; height 45 mm. 



This species differs, by its peculiar mode of branching, from all the other rep- 

 resentatives of the genus in our collections. 



(Sigsbee.) Station No. 14. Off Havana. 175 fms. 



Cryptohelia Peircii Pourt. 



Station No. 5. Off Havana. 100 fms. 



« « 44. Lat. 25° 33' N., Long. 84° 35' "W. 539 fms. 



Lepidopora glabra Pourt. 

 (Sigsbee.) Station No. 5. Off Havana. 100-154 fms. 

 « Off Havana. 158 fms. 



« Oflf Havana. 243-458 fms. 



Lepidopora cochleata Podrt. 

 (Sigsbee.) Off Havana. 154 fms. 

 Station No. 16. Off Havana. 292 fms. 



Errina carinata Pourt. 

 (Sigsbee.) Station No. 5. Off Havana. 80- 100 fms. 

 " Off Havana. 292 fms. 



Pliobothrus tubulatU3 Pouut. 

 Station No. 16. Lat. 23° 11' N., Long. 82° 23' W. 292 fms. 



Pliobothrus symmetricus Pourt. 



Station No. 5. Lat. 24° 10' N., Long. 82° 13' W. 229 fms. 



Note. Tlie Favosites mentioned in Mr. Agassiz's letter No 1. (Bull. Mus. Comp. 

 Zoiil. Vol. V. No. 1) proves, on examination of its internal structure, to be ijuite dill'er- 

 ent. Being dry, the soft parts could not be examined satisfactorily. Mr. Mosclcy, who 

 has examined a portion of it, expresses a strong suspicion that it is a Bryozoon, per- 

 haps related to .some mushroom-shaped Bryozoa in the "Challenger" collection. A 

 description will be deferred until after next season's drcdgings, in the hope of obtain- 

 ing some alcoholic specimens. 



