Occasional Papers of the Museum of Zoology 5 



in such a case as this. If a sHght degree of differentiation be 

 the basis of subspecies, then one might apply trinomials which 

 do have the advantage of pointing to one of the supposedly 

 related types. If intergradation be the touchstone whereby 

 subspecies may be determined, then insular forms automatic- 

 ally demand binomial address. This seems the most generally 

 convenient method to pursue with the denizens of such island 

 groups as these Antilles, and, moreover, no brief is held for 

 consistency now or hereafter. Absolute overlapping — i. e., 

 the finding of occasional identical individuals in the ranges 

 of each of any two distinct forms — does not seem often to 

 occur. The gradual transitions of intergradation can only 

 occur w^here large land masses support geographic races which 

 are unseparated by naturally impassible barriers of any sort. 



Iguana dclicalissinia Laurenti 



Peters found this iguana rare, but, nevertheless, he secured 

 two specimens each on St. Eustatius and Anguilla. The hap- 

 hazard distribution strongly suggests its having been carried 

 about by primitive man. Indians in various localities twist 

 loose the finger and toe-nails of iguanas and then stretch out 

 the tendons so that their feet may be tied over their back by 

 these cords. The luckless creatures are often carried about 

 thus, boimd and helpless, and as they live for some time with- 

 out food or drink they are the most convenient meat for 

 canoe journeys. Thus they may have been carried through 

 the Antilles, and perhaps occasionally escaped the unhappy 

 fate for which they were destined. They are excellent food. 



Ameiva erythrops Cope 

 .linciva ucvisana vSchmidt. Proc. Linn. Soc. N. Y., 38, 1920, p. i. 

 Schmidt described his new species from Nevis from a 



