136 K. J. Bush — Two genera of tubicolous Annelids. 



operculum ornamented with antler-like spines, but has very 

 strongly marked collar setae. 



The species described by Marion and Bobretzky from Mar- 

 seilles and by Saint-Joseph from Cannes (see this Journal, p. 

 57) have a similar thorn-like projection on the operculum cap 

 but the cap itself is elongated and composed of several pieces. 



PSEUDOVERMILIA PILETTM Sp. nOV. 



This species is very common along the shores of Bermuda. 

 The tubes, similar to P. occidentalism are found also on the 

 hat-coral and on various shells (Area Adamsii, Turbo 

 ( ' Linona) picta, Astralium longispinum, Chama oermudensis 

 and others). When uninterrupted in its development it has 

 three prominent nodulose carinae on top (one large keel-like 

 median and two smaller lateral ones) separated by two deep 

 grooves below which are conspicuous curved tran verse lines. 

 Young tubes invariably have three carinae but seldom show 

 any indications of the transverse sculpture. 



The species is readily distinguished by its larger, more 

 elongated operculum, having an elongated, asymmetrical, 

 irregular, dark horn-colored (blackish) chitinous cone-like end, 

 resembling a liberty-cap. The branchiae number 7 in each 

 lobe and the setae appear broader and more abruptly tapered 

 and the teeth on the uncini more numerous than in the pre- 

 ceding species. One smaller animal without an operculum 

 has 9 branchiae in each lobe. 



The P. nigrojpileata Ehlers* is a closely related species 

 with the opercular cone more symmetrical and larger. 



Zoological Laboratory, January 14th, 1907. 



* Magellanische Anneliden, p. 222, 1900; Die Polychseten des Magellan- 

 ischen rmd Chilenischen Strandes, p. 219, pi. xxv, figs. 14-23, 1901. 



