LEODICID^ OF THE WEST INDIAN REGION. 33 



on either side has 5 teeth, the distal paired have 10 on the right and 5 on the left, the 

 unpaired has 9. Smaller specimens had on the right and left proximal plates 3 and 4 

 and 4 and 5, respectively, there evidently being some variation in this respect. There 

 are small plates lateral to the paired and pigment patches distal to the whole. The 

 mandible (text-figure 76) has acutely pointed shafts marked by longitudinal dark and 

 light-brown bands which are continued on to the beveled portion, this latter being also 

 marked by concentric brown lines. 



In the Tortugas this species is rather rare, but in 1916 I found it in great abundance 

 in Bermuda, living in the crevices of the eroded coral rock just below low-water mark. 

 I have also collected it at San Juan and Guanica in Porto Rico, in Montego Bay, 

 Jamaica, and in Tobago; it was found in Andros Island in the Bahamas by Dahlgren 

 and MuUer, of the American Museum of Natural History; in St. Thomas by Shoe- 

 maker, of the U. S. National Museum; and in Dominica by A. H. Verrill. At the Dry 

 Tortugas I have found it not only in rocks near low-water mark, but have dredged it 

 in 8 to 10 fathoms 7 miles south of Loggerhead Light. 



Verrill identified Leodice mutilata with Eunice barvicensis of Mcintosh, which was 

 described from mutilated specimens in which the structure of the head was not to be 

 clearly distinguished. From his description of the dental apparatus and gills I would 

 say Mcintosh perhaps had an immature form of this species, a conclusion that would 

 be strengthened by the size of his specimens as given in his measurements. 



Leodice sp. (floridana Pourtales?). 



(Text-figures 77 to 84.) 



Marphysa floridana Pourtales, 1863-1869, p. 108. 



Eunice floridana Ehlers, 1887, p. 88, plate 22, figures 1-7. 



Eunice floridana Mcintosh, 1910, p. 439, plate Lxv, figures 7, 76; plate Lxxv, figures 2, 2a; plate lxxxiii, 



figures 10, 106. 

 Eunice floridana Fauvel, 19146, p. 149, plate i, figures 5, 8, 11; plate xi, figures 22-26. 



Other references to the literature of this species may be found in the last two items, 

 but these are the only ones of especial interest in the present discussion. 



Fragments of two specimens of a Leodice were dredged in 1915 about 10 miles south 

 of Loggerhead Key in the Dry Tortugas, in about 15 fathoms. Neither fragment 

 retainsd the head, the better preserved of the two having only about 125 of the posterior 

 somites. In general appearance it somewhat resembled L. longicirrata (see page 11), 

 but differed in that the gills are continued to within 6 somites of the posterior end. Like 

 L. longicirrata also, the cirri are long and slender. Leodice floridana has a gill arrange- 

 ment like this, and I have compared these specimens with some that I have identified 

 as the latter species, collected by the Albatross at 31° 09" N., 79° 33' 30" W., in 352 

 fathoms. The two differ in general appearance, but perhaps no more so than could 

 be explained by differences in the mode of preservation, and a detailed examination of 

 corresponding parapodia showed a general agreement, especially in the large size and 

 dark color of the aciculae, the size of the gills, and the structure of the setse. The cirri of 

 the Tortugas material were longer than in the others, but this may have been due to dif- 

 ferences in preservation. The most important difference relates to the structure of the 

 anal cirri. These (text-figure 84, the only one preserved) are moniliform with 7 joints. 

 Ehlers (1887, p. 89) says that the anal cirri of L. floridana are "not at all" annulated. 

 Fauvel (19146, p. 149) describes them as smooth; Pruvot and Racovitza (1895, p. 398) 

 say that the longer cirri are "subulate"; and Mcintosh (1910, p. 439) says that the 

 tentacles are "slightly annulated but no other process is so," though his figure (plate 

 LXV, figure 7) shows the nuchal and several pairs of dorsal cirri as strongly articulated. 

 A specimen from the Albatross collection had two pairs of anal cirri, one pair short and 



