K. J. B%ish — Two genera of tubicolous Annelids. 133 



The operculum has the asymmetrical horn-colored cap, 

 shorter and broadly rounded at tip, made up of but three 

 unequal saucer-shaped pieces below the good-sized bulbous 

 end-piece. 



The small tube has five, unequal, rather fine, rounded longi- 

 tudinal threads. 



Paravermilia amblia sp. nov. 



Five specimens about the size of P. oennudensish-ave 14-16 

 branchiae in each lobe and the thoracic membrane very 

 excessively developed. The large, sometimes cylindrical, oper- 

 culum has a comparatively short, broadly rounded, symmetri- 

 cal, light horn-colored cap of one or two convex or dome- 

 shaped pieces covered by a very large, elongated, broadly- 

 rounded end-piece. Occasionally one occurs in which the 

 pieces decrease in diameter ; the cap tapered. 



Paraveemilia annulata (Schmarda). 



Vermilia annulata Schmarda, Neue Wirbellose Thiere, II. p. 28, text 

 figure and pi. XXI, fig. 176, 1861 ; non Enlers, Blake annelids, p. 308, pi. 58, 

 figs. 12-16 ; pi. 59, figs. 1-3, 1887 ; ? non Augener, Westindische Polychseten, 

 p. 184, 1906. 



Placostegus annulatus Morch, Eevisio Serpulidarum, p. 422, 1863. 



? Vermilia annulituba Augener, op. cit., p. 185, pi. 8, figs. 153-161. 



Seven specimens taken from dead coral from Castle Har- 

 bor, JBermuda, are larger than any of the preceding forms, 

 the largest one with much curled branchiae measuring about 

 22 mm . There are from 12-14 branchiae in each lobe and 16 

 teeth on the largest uncinus. 



The horn-colored chitinous cap of the operculum is concave 

 on the end, being composed of two or three saucer-shaped 

 pieces, destitute of an additional convex end-piece found in the 

 other species. It is very like Schmarda's figure and descrip- 

 tion and also the figure given by Augener as Vermilia annuli- 

 tuba found north of Martinique in 210 fathoms. 



The thoracic membrane in this very much larger species is 

 not clearly defined, especially in the figure, and the terminal 

 tooth on the uncinus is represented as bluntly rounded. 

 Schmarda's figure also is not sufficiently clear for definite com- 

 parison. 



The two animals found off Cuba in 292 and 310 fathoms, 

 described and figured by Ehlers under Schmarda's name, on 

 comparison were found to differ not only from this species but 

 also from each other. Through the courtesy of Dr. Wood- 

 worth of the Museum of Comparative Zoology, these speci- 

 mens have recently been examined and found to be two distinct 

 species referable to two different genera. 



