Subfamily Heteropsomyinae Anthony, 1917 . Bull. Am. Mus. Nat. Hist., 37(4):189.

COMMENTS: Named by Anthony to reflect perceived relationship between Heteropsomys and Dasyprocta . Expanded by Kraglievich (1965) and Patterson and Pascual (1968b) to include Proechimys and associate genera. Modified by Woods (1982:386) when West Indian Spiny Rats classified with capromyids. West Indian Spiny Rats are transitional in characters between Echimyidae and Capromyidae, and here are placed in their own subfamily within the Echimyidae until the two families are revised. Varona (1974:73) placed all West Indian Spiny Rats in the genus Heteropsomys . However, there are clear differences between the forms on each island, so the original generic names are maintained here, except that Homopsomys is combined with Heteropsomys (Woods, 1989a, b).