6TAXONOMIC CHARACTERS
35Proechimys guyannensis leioprimna subspecies nova
7Size and Proportions of External Parts
36Proechimys guyannensis oris Thomas
8Pelage
37Proechimys guyannensis arescens Osgood
9Skull
38Proechimys guyannensis riparum subspecies nova
10Incisive Foramen
39Proechimys guyannensis arabupu subspecies nova
11Teeth
40Subgenus TRINOMYS Thomas
12HABITS
41Proechimys dimidiatus (Günther)
13CHANGES WITH AGE
42Proechimys iheringi Thomas
14Genus Proechimys J. A. Allen
43Proechimys iheringi iheringi Thomas
15Artificial Key to the Subgenera and Species
44Proechimys iheringi bonafidei subspecies nova
16Subgenus Proechimys J. A. Allen
45Proechimys iheringi gratiosus subspecies nova
17Proechimys goeldii Thomas
46Proechimys iheringi panema subspecies nova
18Proechimys goeldii steerei Goldman
47Proechimys iheringi denigratus subspecies nova
19Proechimys goeldii goeldii Thomas
48Proechimys iheringi paratus subspecies nova
20Proechimys semispinosus (Tomes)
49Proechimys setosus (Desmarest)
21Proechimys semispinosus liminalis subspecies nova
50Proechimys setosus setosus (Desmarest)
22Proechimys semispinosus amphichoricus subspecies nova
51Proechimys setosus elegans (Lund)
23Proechimys semispinosus kermiti Allen
52Proechimys albispinus (Is. Geoffroy)
24Proechimys longicaudatus (Rengger)
53Proechimys albispinus albispinus (Is. Geoffroy)
25Proechimys longicaudatus brevicauda (Günther)
54Proechimys albispinus sertonius Thomas
26Proechimys longicaudatus boimensis J. A. Allen
55INCERTA SEDIS: Proechimys myosuros (Lichtenstein)
27Proechimys longicaudatus longicaudatus (Rengger)
56CONCLUSIONS
28Proechimys longicaudatus leucomystax Ribeiro
57TABLE OF MEASUREMENTS: TABLE 1
29Proechimys longicaudatus roberti Thomas
58LITERATURE CITED