. Carnegie Institution of Washington publication. LEODICHXE OF THE WEST INDIAN REGION. 83 Neither of my specimens retained the pygidium. Professor Verrill's shows the posterior end smooth, with no trace of metamerism for a length equal to 4 or 5 somites, then a slight enlargement forming the pygidium, which carried three anal cirri, one longer than the other two; apparently there were originally four. All were short. The maxilla (text-figure 296) is delicate and transparent, the only noticeable color being two narrow bands at the junction between each carrier and the forceps, and the triangula
. Carnegie Institution of Washington publication. LEODICHXE OF THE WEST INDIAN REGION. 83 Neither of my specimens retained the pygidium. Professor Verrill's shows the posterior end smooth, with no trace of metamerism for a length equal to 4 or 5 somites, then a slight enlargement forming the pygidium, which carried three anal cirri, one longer than the other two; apparently there were originally four. All were short. The maxilla (text-figure 296) is delicate and transparent, the only noticeable color being two narrow bands at the junction between each carrier and the forceps, and the triangular plate distal to the distal paired, which are dark brown. (The parts were separated in mounting them for study.) The remainder of the apparatus is colorless by transmitted light, only very faintly straw-colored by reflected light. The carriers are long, nearly triangular in outline, with a very narrow wing at the posterior end. The basal portion of the forceps is nearly one-half of the whole, the terminal portion only slightly curved. Each proximal paired plate has 4 prominent teeth, with a rudi- mentary fifth on the right plate. The unpaired plate has 4 teeth, the distal paired plates have 2 on the left and 4 on the right. The drawing of the left distal paired plate may not bs quite accurate as to outline. I was able to determine the number of teeth, but not the correct outline of the whole plate. There is an accessory plate lateral to each distal paired. The mandible (text-figure 297) is longer than the maxilla, has, so far as I could tell, very slender shafts (I was unable to remove enough of the adherent tissue in the specimens at my command to be quite sure of the outline of the shafts), and the distal portion shows a beveled area with concentric brown lines. In the figure these are seen through the transparent anterior end of the mandible, the drawing being from the dorsal surface. Each lateral uprolled edge is dark brown, and streaks of similar color occur at the point
Size: 2234px × 1118px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorcarnegie, bookcentury1900, bookdecade1900, bookyear1902
