| 1. | The narrow interorbital region ( between the eyes ) is hourglass-shaped.
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| 2. | The interorbital region is narrow and the molars.
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| 3. | The interorbital region of the skull is narrow.
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| 4. | The skull is narrow and has a broad interorbital region ( between the eyes ).
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| 5. | The interorbital region is 4.14 mm long and the zygomatic plate is 2.38 mm.
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| 6. | The supraorbital ridge of the skull is large, and the interorbital region is very broad with nearly parallel sides.
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| 7. | The interorbital region of the skull ( located between the eyes ) is narrower than that of any other oryzomyine.
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| 8. | The form of the interorbital region of the skull is distinctive, featuring distinctly beaded margins that converge towards the front.
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| 9. | The interorbital region, located between the eyes, is narrowest towards the front and is flanked by beadings along its margins.
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| 10. | The skull has a short rostrum ( front part ), broad interorbital region ( between the eyes ), and narrow braincase.
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