4 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 125 
spines; the medial, below the subapical notch, containing long, 
slender spines; and the basal, which may or may not be set off from the 
medial by a slight notch, containing only short, slender spines (fig. 15). 
Ficure 1.—Chihamalus angustitergum Pilsbry, 1916, AMNH 12458, Panto Hole Bay, 
Dominica: a, mandible; b, maxilla I; c, palp; d, maxilla IT; ¢, cirrus I; f, labrum; g, distal 
end of penis; h, cirrus II; 7, comb seta from cirrus II; 7, cirrus III; &, cirrus VI. (Setae 
omitted on cirri I and II; on numbered segments of cirri III and VI, only one set of setae 
shown; a=anterior ramus; p=posterior ramus; scale in millimeters.) 
