22 LEODICID^ OP THE WEST INDIAN REGION. 



The aciculse of the anterior somites are straight with bluntly pointed apex (text- 

 figure 37). In the posterior somites the dorsal acicula is of this character, while the ven- 

 tral one has a very small terminal tooth which is usually a little larger than in the one 

 figured (text-figure 38), a larger conical tooth just behind it, and a much larger curved 

 subterminal tooth farther back. The whole is covered by a striated hood. 



The maxilla is grayish brown in color with darker margins (text-figure 39). The 

 carrier is a little longer than wide, with a dense pigment line at the base of each wing, 

 on the inner margin of either half of the carrier and at the junction between these and 

 the forceps. The forceps is slender, light brown in color except for a dark spot on the 

 inner margin of each half. The right paired proximal plate has 10 teeth, the basal ones 

 being very small, and the left has 6. The right distal has 10 and the left has 8, while 

 the unpaired has 12. Distal to the paired plates on either side is a crescentic patch of 

 pigment. 



The mandible (text-figure 40) is very slender, the two halves rather widely sepa- 

 rated posteriorly, and the beveled portion marked by faint concentric brown lines. 



In Bermuda, in 1916, I found Leodice stigmatura abundant wherever there were 

 fiat rocks in quiet water, as in Fairyland Creek, Flatts Inlet, Tucker's Bay, and Tuckers- 

 town Bay. They were less numerous in the Dry Tortugas, though they could usually 

 be found on the under side of stones and empty conch-shells at the landing at Fort 

 Jefferson. They were also collected at Marquesas Key and at Sand Key Light near 

 Key West. Apparently they become sexually mature in these localities in late June 

 and early July. 



Leodice denticulata Webster. 



(Plate 3, figures 1 to 4; text-figures 41 to 53.) 



Eunice denticulata Webster, 1884, p. 316, plate 10, figures 41, 41a, 416-45. 



Eunice conglomerans Ehlers, 1887, p. 93, plate 23, figures 1-9; plate 24, figures 1-4. 



Eunice cirrobranchiata? Mcintosh, 1885, p. 277, plate xxxvin, figures 9, 10, 11; plate xix a, figures 21-24. 



Eunice denticulata Treadwell, 1901, p. 196. 



Leodice denticulata Verrill, 1900, p. 639. 



A large species, reaching a length of 500 to 600 mm., with a head width of 5 mm. 

 The specimen figured (plate 3, figure 1) had 479 somites. In hfe the head and anterior 

 somites are a bright vermilion-carmine, though the tentacles and the anterior margin 

 of the peristomium have a lighter color. This color gradually weakens and disappears 

 altogether by the fiftieth somite. Behind this point, except for a reddish color in the 

 dorsal and ventral cirri and the bright-red gills, the body is practically colorless, though 

 in some somites a very fine dusting of brown spots appears on the dorsal surface. Sex- 

 ually mature individuals have a creamy tint throughout the sex region, this tint being 

 fighter in males than in femahs. The posterior end of the body is a translucent white, 

 against which the bright-red gills appear as very prominent organs. All color disappears 

 in alcoholic material. 



The prostomium (plate 3, figure 2) is two-lobed, with more or less reddish pigment 

 arranged in fine lines on the dorsal surface, its anterior end uncolored. The tentacles 

 are relatively short, extending for not more than one-third of their length beyond the 

 prostomium; the unpaired tentacle is the longest, but the others (because of their longer 

 cirrophores) extend about as far beyond the prostomium as it does. All of the tentacles 

 are smooth, with bluntly rounded apices, more or less tinted with pink, but colorless 

 at the ends. 



The peristomium is as long as the following five somites (plate 3, figure 1). Dor- 

 sally it is smoothly rounded, but ventrally a rather prominent hp extends anteriorly 

 below each lobe of the prostomium. The second somite (plate 3, figure 2) is very short, 

 and its nuchal cirri extend to little more than the middle of the peristomium. 



