# Endangered and Threatened Wildlife and Plants; Designation of Critical Habitat for Roswell Springsnail, Koster's Springsnail, Noel's Amphipod, and Pecos Assiminea
> **US Fish and Wildlife Service** · Final rule. · Published 2011-06-07 · Effective 2011-07-07 · 76 FR 33036
## Document
- **Document number:** 2011-13227
- **Category:** endangered-species
- **Sub-agency:** US Fish and Wildlife Service
- **Federal Register citation:** 76 FR 33036
- **CFR reference:** 50 CFR 17
- **Publication date:** 2011-06-07
- **Effective date:** 2011-07-07
- **Interior docket:** Docket No. FWS-R2-ES-2009-0014
## Abstract

We, the U.S. Fish and Wildlife Service, designate critical habitat for the Pecos assiminea (Assiminea pecos), Roswell springsnail (Pyrgulopsis roswellensis), Koster's springsnail (Juturnia kosteri), and Noel's amphipod (Gammarus desperatus), under the Endangered Species Act of 1973, as amended. In total, we are designating as critical habitat approximately 521.3 acres (211.0 hectares) for the four species of aquatic invertebrates. The critical habitat is located in Chaves County, New Mexico, and Pecos and Reeves Counties, Texas.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2011/06/07/2011-13227/endangered-and-threatened-wildlife-and-plants-designation-of-critical-habitat-for-roswell)
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