LEODICID^E OF THE WEST INDIAN REGION. 



87 



peristomium and may extend decidedly beyond the level of the margins of the peri- 

 stomium (plate 8, figure 1); its anterior lateral angles broadly rounded, its breadth 

 about equal to twice its length. The eyes are black, kidney-shaped, situated at the 

 outer side of the base of the paired tentacles (plate 8, figure 2). The tentacles are three 

 in number, are a trifle longer than the prostomium (plate 8, figure 2), of a very delicate 

 texture, and colorless; the peristomium (plate 8, figure 2) has a free dorsal margin which 

 extends for a short distance over the latter. In life this margin is elevated and depressed 

 with a rhythmical movement. 



The general color of the body is a pearly white, modified by the reddish tint of the 

 blood in the body- walls (plate 8, figure 1). Somites 3 and 8 have a deep-brown ground- 

 color with numerous yellowish spots over the surface, the most apparent of these spots 

 being arranged in a single transverse row near the anterior edge of the somite. Somites 

 7 and 9 may also show this coloration. The posterior third of the body is nearly pure 

 white in immature individuals, but in mature females is, for the posterior third of the 

 body, colored a dark green by the contained eggs. 



The dorsal cirri at the anterior end are relatively rather prominent (text-figure 305), 

 but posteriorly they become very small (text-figure 306). There are two pairs of anal 

 cirri (plate 8, figure 4), of which the ventral pair is the shorter, hardly longer than the 

 ventral cirri of the parapodia. 



The first parapodium (text-figure 307) has a rounded setal lobe smaller than the 

 ventral cirrus and a relatively rather stout dorsal cirrus. The tenth parapodium (text- 

 figure 305) shows a rounded post-setal lip, with the end of the setal lobe in the form of 

 a hemisphere surrounded by a depression, from the bottom of which the setse arise. 

 The ventral cirrus is short and asymmetrically sagittate in outline, while the dorsal 

 cirrus is longer than the setal lobe and slender. A parapodium from the posterior 

 third of the body (text-figure 306) has a uniformly rounded margin with a very small 



TEXT-FIGURES 305 to 313. Lysidice notala Ehlers. 



305. Tenth parapodium x34. 



306. Middle parapodium x34. 



307. First parapodium x67. 



308. Simple seta from first parapodium x387. 



309. Pectinate seta x387. 



310. Acicula from posterior parapodium x387. 



311. Maxilla x32. 



312. Mandible x32. 



313. Compound seta x287. 



