50 CFR § 424.10 - General.

---
identifier: "/us/cfr/t50/s424.10"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "50 CFR § 424.10 - General."
title_number: 50
title_name: "Wildlife and Fisheries"
section_number: "424.10"
section_name: "General."
chapter_name: "JOINT REGULATIONS (UNITED STATES FISH AND WILDLIFE SERVICE, DEPARTMENT OF THE INTERIOR AND NATIONAL MARINE FISHERIES SERVICE, NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION, DEPARTMENT OF COMMERCE); ENDANGERED SPECIES COMMITTEE REGULATIONS"
subchapter_number: "A"
subchapter_name: "SUBCHAPTER A"
part_number: "424"
part_name: "LISTING ENDANGERED AND THREATENED SPECIES AND DESIGNATING CRITICAL HABITAT"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "16 U.S.C. 1531"
regulatory_source: "49 FR 38908, Oct. 1, 1984, unless otherwise noted."
cfr_part: "424"
---


# 424.10 General.

The Secretary may add a species to the lists or designate critical habitat, delete a species or critical habitat, change the listed status of a species, revise the boundary of an area designated as critical habitat, or adopt or modify special rules (see 50 CFR 17.40-17.48 and parts 222 and 227) applied to a threatened species only in accordance with the procedures of this part.