NO. 1504. AMERICAN PARASITIC COPEPODS— WILSON. 699 



GLOIOPOTES ORNATUS Wilson. 



Plate XVII, figs. 23-34. *" 

 Gloiopotes ornatiis Wilson, 1905, a, p. 127. 



Female. — Carapace elliptical, about the same length as the rest of 

 the body, considerably longer than wide, strongh^ arched. Frontal 

 plates well defined, but narrow and without lunules. Posterior sinuses 

 large and well rounded; median lobe less than half the body width, 

 not projecting bej^ond the lateral lobes, concave posteriallv and some- 

 what incised at the center. 



This lobe enlarges posteriorly until it fills the posterior sinus on 

 either side and overlaps the lateral lobe. 



The arrangement of grooves separating the various carapace areas 

 is ver}^ complex and constitutes the first important factor in producing 

 the variegated or ornamental appearance of the dorsal surface. Tho- 

 racic area large, oblong in general shape, and occup3nng three-fifths 

 of the width and two-thirds of the length of the carapace. Its lateral 

 grooves have a graceful double curve, while at the center anteriorlv 

 is a triangular incision into which fits the posterior end of the eye 

 area. From the apex of this incision a groove extends backward along 

 the median line nearly to the center of the thoracic area, where it divides 

 and sweeps outward toward either side in a broad curve. The tho- 

 racic area is thus divided approximately into quarters, each of which 

 is owiamented by various elevations and depressions of the surface. 



The ej'e area is obovate in outline, quite small, and clearl}'^ separated 

 from the cerebral area in front, the thoracic area behind, and the late- 

 ral areas on either side. The eyes themselves are distinct, situated 

 about in the center of the area, and inclined toward the mid axis. The 

 grooves at the sides of the eye area are prominent and extend forward 

 along either side of the cephalic area of the frontal plates. Numerous 

 smaller grooves branch from those already mentioned and add to the 

 variegated appearance. There is also a row of small spines along 

 either side of the median posterior lobe and a row of long and wav}' 

 hairs along the posterior half of the outer margin of the lateral lobes. 



The free segment is short and wide and is covered dorsally by two 

 broad plates which extend laterally over most of the basal joints of 

 the fourth legs, and posteriorly over a very little of the genital seg- 

 ment. These plates are smooth and quite transparent along their 

 lateral and posterior margins, but are thrown into numerous folds and 

 wrinkles at the center, where they join each other. 



The genital segment is horseshoe-shaped, contracted into a narrow 

 and short neck anteriorl}^, where it joins the free segment, then widening 

 abruptly to more than half the width of the carapace, and prolonged 

 backward in a stout lobe on either side of the abdomen. The sides of 

 the segment are convex, while the tips of the lobes curve in toward 



