704 REPORT OF COMMISSIONER OF FISH AND FISHERIES. [6] 



as a distinct bundle, but mixed with the ordinary setae. They begin, 

 from the twenty-fifth to the thirtieth segment, short at first, but soon 

 becoming as long or longer than the width of the body, while the or- 

 dinary setse are quite short; they extend nearly to the posterior end. 

 In the males the posterior two-thirds of the body is rounded, much 

 swollen by the contained spermatozoa. After the twenty-fifth segment 

 the body of the females is filled with numerous large eggs ; these are 

 very dark green, and determine the color of the body wherever they 

 exist. The anterior part of the body has the same color as in the males 

 and in asexual forms. This is gray, with lateral brown bands, one on 

 each side, and with a darker brown spot at the base of each foot, both 

 above and below. 



There are three anal cirri on all forms, the odd one being median, 

 ventral, and quite small. 



Common on dredged shells, 20 to 30 fathoms ; sand and shells. 



EULALIA DfBIA W. Sp. 

 (PL. VIII, Figs. 101-105.) 



This species we at first referred to Eulalia annulata Yerrill, but 

 when the specimens were submitted to him he decided that they did 

 not belong to his species. 



The head (fig, 101) has the lateral margins evenly rounded, with a 

 constriction just back of the origin of the antennae. The inferior antennae 

 are concealed by the superior, but are similar to them in every respect. 

 The median antenna is a trifle less stout than the anterior, otherwise 

 the same. Eyes two, moderately large, circular, black. 



Tentacular cirrus of the first segment and the lower cirrus of the 

 second segment equal in length ; about one-half as long as the other 

 cirri ; these reach about to the fourth setigeroiis segment. 



The branchiae are all acute, growing progressively longer and wider 

 from the first segment (fig. 102) to the middle of the body (fig. 103), 

 after which they continue to increase in length, but diminish in breadth, 

 becoming very long and narrow on the posterior segments (fig. 104). 

 The ventral cirri undergo similar changes, but not to the same extent. 

 The segments of the posterior half of the body are crossed by a narrow 

 raised band. 



The setae have very short terminal articles (fig. 105); the stem ter- 

 minates in a series of minute teeth, with one much larger slightly curved 

 tooth The proboscis is long, cylindrical, densely covered with cylin- 

 drical papillae. Segments, deeply incised. 



Body, dark green ; branchiae, dark brown, with green margin ; a dark 

 brown spot at the base of the feet, both above and below. 



The specimen from which the figure of the head was made had the 

 head retracted, so that the first pair of tentacular cirri seem to originate 

 beneath the head; in extended specimens the first segment is plainly 



