126 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 57 



Geographic distribution. — On the slope of the ridge between 

 Wapta Peak and Mount Field, north of Burgess Pass, and about 

 3800 feet above Field on the line of the Canadian Pacific Railway, 

 British Columbia, Canada. 



Observations. — The generic name is given in recognition of the 

 fine work of Prof. A. H. Worthen, formerly State Geologist of 

 Illinois. 



WORTHENELLA CAMBRIA, new species 

 Plate 22, fig. 2 



Body slender, elongate, and formed of 46 or more segments and 

 a small head. The segments, as flattened in the shale, have a length 

 of about one-half the diameter, which indicates that when uncom- 

 pressed the diameter and length of each segment were about the 

 same. Each segment has an annular median furrow that serves to 

 divide it into two narrow rings with a groove between them. 



The head is not well-preserved, but it appears to be formed of a 

 large posterior segment and one or two anterior segments. A small 

 shiny spot in front suggests an eye. The head appears to have 

 been conical in form and provided with one or more pairs of ten- 

 tacles and a pair of palps, the latter being represented by the long 

 filament-like organs extending back from the ventral side of the 

 head. The tentacles are represented by short, faint, jointed ap- 

 pendages extending forward from the front of the head. 



The anterior 34 segments of the body show on their inner or 

 ventral side, as compressed on the shale, strong parapodia divided 

 into two filamentous branches. The parapodia of the next posterior 8 

 segments are longer and more compact. This description of the para- 

 podia is subject to revision as the details of structure are not clear. 



Enteric canal. — A very narrow dark line that extends close to the 

 ventral or inner margin of the body from the head nearly to the 

 posterior end, may represent a slender enteric canal. 



Measurements. — The only specimen in the collection has a length 

 of about 60 mm. 



Observations. — Of this species there is only one specimen and its 

 matrix. The characters described are readily seen by reflected light. 

 The presence of small oval and round scale-like objects on the shale 

 suggests that they may have belonged to the annelid and been de- 

 tached. If so, with our present information Worth en ella cambria 

 is considered to represent an annelid belonging to the order Poly- 

 ch?eta. It does not appear to fall within the limits of any of the 

 recent families of the order. It mav be that in the collections of 



