326 Hay: A New Species of Baena. 



hexagonal, with the anterior end somewhat, but not greatly, broader 

 than the hinder end. The sixth neural is octagonal. There is a 

 large pygal, but no postneural. The fifth costal plate is much nar- 

 rowed at its distal end. The vertebral scutes are much broader than 

 in any of the other species of the genus, the second having a width 

 of loo mm. and a length of 86 mm. A small accessory costal plate 

 is cut off from the first vertebral on each side, making five costals on 

 each side. 



The plastron is rather narrow in front, and considerably narrower 

 behind than in any other published species. The length is 305 mm. 

 The bridge has a width, fore and aft, of 115 mm. The anterior lobe 

 is 106 mm. long and 115 mm. wide at the base. The width dimin- 

 ishes from the base slowly at first, then rapidly to the midline ; so 

 that the front is rounded. The hinder lobe is 98 mm. long and 120 

 mm. wide at the base. The lateral borders are nearly straight and 

 convergent to the femora-anal sulci, where the width is 71 mm. Be- 

 hind these, for a short distance, the sides are parallel. The hinder 

 border is somewhat excavated. 



The interclavicle is oval and 48 mm. long. There are large meso- 

 plastra, whose inner ends are 23 mm. wide; the outer ends, 60 mm. 

 The gulars and the intergular sulci radiate from the same point on the 

 front of the interclavicle. On each of the bridges there are four 

 inframarginal scutes. 



American Museum of Natural History, 

 New York, May 25, 1901. 



