LEODICID^ OF THE WEST INDIAN REGION. 27 



compound setse are as shown in text-figure 530. The basal joint has a slightly enlarged 

 apex, denticulated along its convex margin. Instead of a prominently hooked terminal 

 joint covered by a hood, as is the most common form, the terminal joint is an elongated 

 oval, slightly pointed at the apex and with faint indications of teeth inside the hood. 

 Except for these teeth the distinction between teeth and hood is not easily seen. In 

 posterior somites the compound setse have a slender basal joint, the terminal joint with a 

 terminal and subterminal tooth, covered by a hood (text-figure 53/i). 



The maxillae are dark in color, the tips of the forceps and the marginal teeth of 

 other plates being the darkest portions. The carriers (text-figure 53i) are short and 

 broad with relatively prominent wings, the forceps moderately heavy. Each of the 

 proximal paired plates has 4 teeth, the right distal paired has 7, the left one has 2, and 

 the unpaired has 6. Pigmented patches of chitin lie distal to the paired plates and a 

 small colorless plate is present on either side. The mandible (text-figure 53j, show- 

 ing only one-half) is quite devoid of pigment and the beveled portion is very small. 



This species was collected in small sponges living on the sandy bottom off Sandy 

 Point, in Montego Bay, Jamaica. One individual occupied a branched membranous 

 tube quite similar to that of L. denticulata (see text-figure 53). I did not see these tubes 

 in connection with other individuals, though even if originally present they might very 

 easily have been lost in cutting the animals out of the sponges. In the arrangement 

 of gills, form and proportion of anterior somites, and in mode of life, L. spongicola agrees 

 closely with L. denticulata, but differs from that species in size, coloration, and in minor 

 details of structure as noted above. 



The type is in the American Museum of Natural History. 



Leodice longisetis Webster. 



(Plate 2, figures 5 to 8; text-figures 54 to 65.) 



Eunice longisetis Webster, 1884, p. 317, plate 10, figures 46-49. 



Eunice nolacea-maculata Ehlers, 1887, p. 86, plate 24, figures 11 and 12; plate 25, figures 1-7. 



Leodice longisetis Verrill, 1900, p. 639. 



Eunice nigricans ? Schmarda, 1861, p. 131. 



A large species, reaching a length of 400 mm., with as many as 170 somites. In 

 life the general color of the body (plate 2, figure 5) is a dark green, showing marked 

 iridescence and with longitudinal, irregularly arranged dark lines. Toward the middle 

 of the body these dark markings cover a larger area and there are numerous yellow spots 

 scattered over the surface. The posterior third of the body is dark brown, passing into 

 purple, the relative amounts of these colors varying in different individuals. The sixth 

 somite is nearly or quite colorless. The ventral surface is lighter than the dorsal, is 

 more or less marked with black, and is brown toward the posterior end. The tentacles 

 and cirri are all banded, the tints varying in different parts of the body. The tentacles 

 and the anterior cirri are greenish brown with white bands, while farther back the 

 greenish brown changes first to brown and later to purple (plate 2, figures 5, 6, 7). One 

 apparently full-grown individual, collected in 1910, was uniformly deep purple with 

 the gills a lighter red. In alcohol the longitudinal brown markings persist, as do the 

 pigment areas on the cirri. 



The prostomium (plate 2, figure 6) is obscurely four-lobed, the median lobes small. 

 There is one pair of small black eyes. The median tentacle is as long as the first six 

 somites; the inner paired tentacles are intermediate in length between the outer paired 

 and the median, all three sets being similarly colored. 



The peristomium (plate 2, figure 6) is a little longer than wide, and very slightly 

 wider at the posterior than at the anterior border. The figure shows the second to the 

 fifth somites as much contracted, but in life the peristomium is as long as from the 



