38 



LEODICID^ OF THE WEST INDIAN REGION. 



The anterior aciculse are rather small and have rounded ends (text-figure 101). 

 One from either the first or second parapodium had its end drawn out into a fine point 

 (text-figure 102). Many of these aciculse were broken at the ends, and I am not certain 

 how often this pointed structure occurs. Posteriorly the dorsal aciculse become larger 

 and at the extreme posterior end show a bifid apex (text-figure 103). Through the 

 median region the ventral aciculae have a terminal tooth with a larger subterminal one 

 ventral to it, but at the posterior end they have trifid apices (text-figure 104). 



For an animal of this size, the maxilla is unusually delicate and soft. The carrier 

 (text-figure 105) is almost semicircular in form, with its outer margins thin and transparent. 

 The base of the forceps is rather heavy, but the terminal portions are slender. Each 

 proximal paired plate has 8 teeth, the distal paired have 8 on the left and 1 1 on the right, 

 while the unpaired has 8. Except for a dark band between the halves of the carrier and 

 at the base of the forceps, the maxilla is very light brown in color, though the teeth are 

 darker. Two crescentic pigment patches occur distal to the plates. The mandible 

 (text-figure 106) is colored much like the maxilla, the beveled portion having concentric 

 brown lines, and similar lines occur on an expansion which extends forward from this 

 beveled portion. In the specimen the margins of the mandibular shafts are not as 

 sharply defined as I have indicated, the development of a marginal plate of chitin 

 making the outline more indistinct. 



The specimen from which Grube's original description was made was collected at 

 St. Croix. Quatrefages renamed it binominata ("Eunice a deux noms") because the 

 name "punctata" had been earlier given to a Mediterranean species; but Quatrefages 



95. Eleventh parapodium x424 



96. First parapodium x24. 



97. Middle parapodium x24. 



98. Simple seta x370. 



99. Compound seta x370. 



Text-figures 95 to 106. Leodice binominata Quatrefages. 



104. Second form of posterior 

 acicula x370. 



105. Maxilla xl8. 



100. Pectinate seta x370. 



101. Anterior acicula x370. 



102. Second form of anterior 



acicula x370. 

 103. Posterior acicula x370. 



106. Mandible xl8. 



