48 



LEODICID^ OF THE WEST INDIAN REGION. 



The first parapodium (text-figure 138) has large cirri and a very small setal portion 

 with a few aciculae. The tenth (text-figure 140) has a much larger setal portion with 

 distinct anterior and posterior lips and a large acicula, while the cirri are much smaller 

 than in the first. Through the gilled region (text-figure 139) the parapodia have very 

 small cirri and a conical posterior lip, from the apex of which protrude the acicula. 

 In comparison with the dorsal cirrus the gill looks large, but when compared with the 

 gills of other species it is very small. 



140 



Text-figures 136 to 143. Leodice carihoea Grube. 



136. Maxilla x40. 



137. Mandible x40. ' 



138. First parapodium xll. 



139. Middle parapodium x40. 



140. Tenth parapodium x40. 



141. Simple seta x310. 



142. Compound seta x310. 



143. Acicula x310. 



The simple setse (text-figure 141) are slender and slightly broadened toward the 

 tip with denticulations along the convex border. The compound setae (text-figure 142) 

 have rather large basal joints with denticulated ends, each terminal joint being small 

 with apical and subapical teeth and a striated hood. I was unable to find any pectinate 

 setae. The acicula (text-figure 143) is yellowish brown in color, rounded and slightly 

 darker at the apex. 



In the maxilla (text-figure 136) the carrier is longer than the forceps, almost rec- 

 tangular in outline, and light yellowish-brown in color. The forceps are darker than 

 the carrier, their basal portion being more than half their length. The proximal plates 

 have each 3 large teeth. On either side distal to these is a row of 3 plates whose appear- 

 ance depends on their position. The median one in each row is thicker than the others 

 and has the appearance of being rolled at the end. The others are flat plates, more or 

 less joined together. Between the proximal plates is a thick plate occupying the posi- 

 tion of the unpaired in other species. In the figure it is drawn as if about half covered 

 by the large plate. None of these distal plates has teeth. The mandible (text-figure 

 137) is much larger than the maxilla. The figure is a dorsal view, the ventral surface 



