232 DR. R. W. SHUFELDT ON [Apr. 1, 



(11) With a simple laryngeal apparatus and trachea, but with 

 long bronchi. 



(12) With a thick, fleshy, unsheathed, and slightly forked 

 tongue. 



(13) With curved, conical, grooved, sharp-pointed teeth: when 

 this reptile bites, tliese teeth transmit the poison from the 

 poison-glands to the wounds they inflict. 



(14) With the secretion of either submandibular gland of a 

 poisonous nature, and with the four ducts of the gland 

 opening into the mouth by foramina situated beneath its 

 lining membrane, near the bases of the teeth. 



(15) With lacrymal and Harderian glands present in either orbit, 

 and with the pecten present in either eye. 



(16) With a fully developed tympanum for the ear. 



(17) With sixty-four vertebrae in its spinal column, of which 

 eight are cervical, twenty-two are dorsal, five lumbar, two 

 sacral, and twenty-seven in the tail. They are of the 

 proccelous type. 



(18) With a sternum that is entire. 



(19) With the dermal tubercles covering the fore part of the 

 skull, co-ossifying therewith in the adult. 



(20) With almost complete atrophy of the zygomatic arch, only 

 a bit of its posterior extremity remaining. 



(21) With the frontal bone excluded from participating in the 

 formation of the superior margin of either orbital periphery, 

 and this by the union of the post- and prefrontal bones. 



(22) With a single parietal bone unperforated by a parietal 

 foramen. 



(23) With a stout epipterygoid that reaches the parietal roof 

 above. 



(24) With a free dorsal margin to the supraoccipital (i. e. that 

 edge is not in contact with the ventral surface of the 

 parietal). 



(25) With clavicles that are of nearly uniform calibre through- 

 out their lengths. 



(26) With a straight interclavicle that is small and nodular in 

 front, dilated behind. Anteriorly, it stands between the 

 mesial ends of the clavicles. 



(27) Wiih only the ulnare, radiale, and centrale composing the 

 proximal row of carpus, and with five carpalia in the distal 

 row. 



(28) With digits of manus and pes, in which, counting from first 

 to fifth, inclusive, the number of phalangeal joints run 3, 2, 3, 

 4, 5, 3, respectively. 



(29) With a well-developed pectineal process, upon either side, 

 on the anterior margin of the pelvis. 



(30) With a small os cloacae. 



(31) With a very small, but ossified patella in the pelvic limb. 



(32) With a single bone forming the proximal row of the tarsus, 

 but the sutural traces in it, standing among tibiale, fibulare, 



[86] 



