76 BULLETIN OF THE 



elongated, length two and a half to three times their width, the upper portion 

 marked with live or six rings, the opening terminal and tubular, the pedicel 

 extremely short. 



Localities. Station 3357, about 140 miles south of Panama. 3384, about 

 100 miles south of Panama. 3388, about 200 miles southwest of Panama. 

 Bathymetrical record, 458, 782, and 1168 fathoms. 



I agree with Allman that the later knowledge gained of the genera Sertu- 

 laria and Sertularella makes it necessary to unite them, retainiiig the name 

 Sertularia. 



This species is in some features similar to SertiUarella arboriformis of ^lark- 

 tanner-Turneretscher, but is distinguished from that by the divergence of the 

 hydrothecse and by their being strongly exserted, and by the narrower, longer 

 gonangia; moreover the stems of variabilis are in some cases, even in the 

 largest colony which is five inches in height, monosiphonic throughout, while 

 in others it is polysiphonic save at the extremities. 



Cryptolaria conferta. 



This is the most abundant species in the collection. A number of fine 

 colonies, typical specimens, were taken at Station 3357. 

 Gonosome not present. 

 Bathymetrical record, 782 fathoms. 



Cryptolaria pulchella. 



A single small specimen was taken at Station 3384. It was first recorded 

 and described by Allman in the Challenger Reports ; a specimen having been 

 collected off Honolulu, S. I., in 40 fathoms. 



Gonnsomc not present. 



Bathymetrical record, 458 fathoms. 



Plumularia helleri. 



Two specimens of this delicate graceful plumularian were sent in from 

 Station 3384. 



Bathymetrical record, 458 fathoms. 



