532 RICHARD SWANN LULL ON 



cannot be learned. If it is really quadrupedal in its gait it is among the largest of such 

 fornas in the Connecticut valley. 



The type specimen, which is unique, is no. ^, in the Hitchcock cabinet, from North- 

 ampton, Massachusetts, associated with Euhrontes approximatus and with AncMsaurijms 

 tuherosits, A. tuheratus, and A. exsertaa. 



Genus Palamopus K. Hitchcock. (Paliu foot.) 



Fulamopus E. Hitchcock, '45b, p. 24. 

 SiUimanius E. Hitchcock, '45b, p. 24 (in part) . 

 Macropterna E. Hitchcock, '58, p. 128. 



Dr. 0. P. Hay (:02, p. 548) says: "This is not the Palamopus of 1848 and subse- 

 quently. The latter is here represented by Eupalamopus." 



Generic characters. Quadrupedal ; manus and pes of unequal size, the latter being 

 from two to three times the length of the former. Feet plantigrade. Pes tetradactyl. 

 Manus pentadactyl ; no claw nor phalangeal pad impressions. Caudal trace sometimes 

 present. 



Palamopus anomalus E. Hitchcock. 



Palamopus anomalus E. Hitchcock, '45b, p. 24. 

 Macropterna recta E. Hitchcock, '48, p. 235, pi. 15, fig. 6. 



tipec'ific characters. Pes : divarication of digits I and II, 10° ; of U and III, 30° to 

 35° ; of III and IV, 35° ; of I and IV, 75° to 80°. Length of digit I, .023 m.; of II, .032 

 m.; of III, .041 m.; of IV, .028 m.; of the heel, .036 m.; of the foot, .077 m. Distance 

 between lateral tips, .040 to .046 m. Breadth of heel, .010 to .015 m. Length of step, 

 .195 m. Digits nearly straight. « 



Manus: divarication of digits I and II, 30°; of II and III, 35°; of III and IV, 35°; 

 of I and IV, 100°. Length of digit I, .006 m.; of II, .010 m.; of HI, .023 m.; of IV, .018 

 m. Digit V not impressing. Distance between lateral tips, .030 m. 



This form is not mentioned by either Hitchcock after 1848. The only specimen 

 which it is possible to identify among those mentioned in 1848, is tlie old no. 33, now 

 If, of the Hitchcock cabinet and correctly referred in the catalogue to Palamopus 

 dwaricans. 



Palamopus divaricans (K. Hitchcock). 



Macropterna (Iwaricans E. Hitchcock, '48, p. 237, pi. 15, fig. 7; '58, p 129 pi 23 

 fig. 7. 



