658 



BULLETIN 54, UNITED STATES NATIONAL MUSEUM. 



The tirst thoracic segment is nearly twice as long as the second, and 

 is densely and thickly covered with tubercles, except on the lateral 

 parts, which are produced backward in rounded expansions. The fol- 

 lowing five segments are subequal and densely covered with tubercles. 

 The seventh segment is a little longer than any of the preceding five 

 segments and has two tubercles, a little larger than any of the other 

 numerous tubercles on its surface, situated on the posterior margin, 

 one on either side of the median line. The coxopodites are not 

 evident from above on any of the segments. On the first two they 

 are present on the under side, being represented in the first seg- 

 ment by a longitudinal raised carina or ridge extending the full length 

 of the segment and terminating in a bifurcate process. On the second 

 segment the coxopodites are also in the form of raised carina? or 



ridges extending the length of the segment. 

 In the second, third, and fourth segments 

 the lateral margins of the segments are drawn 

 out in narrow processes terminating laterally 

 in rounded extremities. The lateral margins 

 of the last three segments are straight. 

 There is one tubercle on either side of each 

 segment on the posterior margin about half- 

 way between the median line and the lateral 

 margin, which- is a little larger than any of 

 the others, those of the sixth segment being 

 most prominent. A faintly raised line crosses 

 transversely the lateral parts of all the seg- 

 ments, with the exception of the first, about 

 the middle. 



The abdomen is composed of six segments, 

 the first two of which are smooth and short, 

 and covered laterally by the seventh thoracic 

 segment. The third, fourth, and fifth segments are subequal and are 

 covered with tubercles, on each of which is a larger and more con- 

 spicuous tubercle in the median line, the tubercles in the series increas- 

 ing in size from the first to the last, and compressed laterally, and in 

 a lateral view having the upper surface rounded. The terminal seg- 

 ment is triangular, with the apex produced in a truncate extremity. 

 There are numerous tubercles on its dorsal surface, one in the median 

 line being larger than the others; it is as large as the median tubercle 

 on the fourth segment. Posterior to it are two small tubercles, one 

 on either side of the median line. The peduncle of the uropoda is in 

 the form of a large plate, almost rectangular when seen from below, but 

 from a dorsal view being long and narrow and lying close to the ter- 

 minal abdominal segment and continuing the oval outline of the body. 

 It reaches almost to the extremity of the terminal abdominal segment. 



FlG. 700. PSEUDARMADILLO DOLL- 



FVSI. X 7. 



