Hawker's least shrew
A very small shrew subspecies (Sorex minutissimus hawkeri) found in Japan. This is a zoological term; the katakana spelling is standard.
The Hawker's least shrew is one of the smallest mammals in Japan.
Katakana spelling is standard for this species name; usually written in kana.
Kanji spelling is rare and mainly found in older or formal taxonomic contexts.
Compound of 東京 (Tokyo) + 尖鼠 (shrew), referring to the Tokyo area where the type specimen was collected. The exact derivation of the scientific name is uncertain.