LEODICIDiE OF THE WEST INDIAN REGION. 



19 



The simple setse (text-figure 24) are slender, very slightly widened and curved 

 toward the ends, the convex margin of the curve finely toothed; the compound setae 

 (text-figure 25) have the ends of their basal joints hardly wider than the terminal joints 

 and smooth, the terminal joints with apical and subapical teeth and a hood with fine 

 marginal denticulations; the pectinate setse (text-figure 26) have comparatively few 

 teeth, the terminal one at one end much longer than the others. The aciculae of the 

 anterior somites (text-figure 27) sometimes show an acute point, which is not always 

 present, though its absence may be due to accident. The posterior ventral aciculse 

 (text-figure 28) have three terminal teeth, of which the proximal one is much the largest, 

 the whole covered by a striated hood. 



The maxilla is light-colored except along the margins (text-figure 29) ; the carrier 

 is short and conical in form, almost colorless, except for a dark band along the junction 

 of the two halves and at the junction between carrier and forceps. The forceps is slender, 

 colorless for most of its extent, but with the tips dark brown, this color lightening as it 

 shades back into the shaft. Near the base of each half there is a depression colored very 

 dark brown and surrounded by uncolored ridges. The plates are also almost colorless 

 except for the margins, the proximal paired plates with 10 teeth on the right and 8 on 

 the left, the distal paired with 12 on the right and 9 on the left, the unpaired with 10. 

 Small accessory plates lie lateral to the others and there are crescentic pigment patches 



Text-figures 21 to 30. Leodice unifrons Verrill. 



21. Tenth parapodium x34. 26. Pectinate seta x380. 



22. First parapodium x34. 27. Acicula x3S0. 



23. Posterior parapodium x34. 28. Acicula x380. 



24. Simple seta x385. 29. Maxilla x34. 



25. Compound seta x380. 30. Mandible x34. 



