PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 189 



The distal angles are prolonged into a single, stout, often short spine on 

 each side, frequently absent on the inner angle. Avicularia on the 

 middle of the front side of the zooecia, toward the base ; they have a 

 short, broad, swollen head, with a short, strongly curved beak ; the pedi- 

 cels are short and thick, raj^idly enlarged from the base upward. Ooicia 

 large, globose, brilliantly iridescent, elegantly sculptured, with a series 

 of raised curved lines passing up over each side and converging to the 

 middle of the front side, while their concave interspaces are covered with 

 microscopic transverse lines. Dredged at Eastport, Me., by the writer, 

 and also in the Gulf of Maine, 110 fathoms, near George's Bank, by Dr. 

 A. S. Packard and Mr. C. Cooke, in 1872 (U. S. Fish Commission). 



The other species of Bugula found on the ^N^ew England coast are as 

 follows : 



Bugula tnrriia (Desor) Yerrill. Florida to Casco Bay. 



Bugula avicularia (L.) Oken. Long Island Sound to Spitzbergen; 

 Europe. 



Bugula Jlustroides (Lamx.) ( = B. fahellata Gray). Long Island Sound 

 to Maine ; Euroi)e. 



Bugula fastigiafa (L.) Alder { = B. plnmom Busk). Massachusetts 

 Bay to Labrador; Europe. 



Bugula Murrayana Busk. Long Island Sound to Spitzbergen ; Europe. 



B. Murragana, yar. fruUcosa (Packard). Massachusetts Bay to Spitz- 

 bergen. 



Bugula flexilis Yerrill* and Bugula nmhclla Smitt belong to the genus 

 Kinetoslias l)u\>. and Koren. Both occur in deej) water off ]\Iaine and 

 Nova Scotia. 



Bugulella fragilis V<'iTill (Anu-r. .Jour. Sci., xvii, p. 472, Juno, 187'J). 



A peculiar genus, in which the branches are composed of a single 

 series of cells, connected together by small and short joints. Zocecia 

 with an oval frontal area, surrounded by spines. 



Off' George's Bank, 220 fathoms, on Acanella. 



CELLULARIDiE. 



Xotwirhstanding the very numerous restrictions which the ancient 

 genus Ccllularia has undergone, it is still made to include heterogeneous 

 species by several receiit writers, while others restrict it to groups not 

 originally included by Pallas. In the excellent memoirs of Smitt on the 

 Arctic Bryozoa, Ave species still remain in the genus CeUularia. These 

 belong, however, to three well-marked groups, some of which have 

 received several generic names, so that their synonymy is very compli- 

 cated. Having had occasion to revise this family, I offer the following 

 summary, so far as it concerns the Kew England species. 



*See American Jour. Science, ix, p. 415, pi. 7, fig. 1, 2, 1875: and vol. xvii, p. 259, 

 1879. 



