genus Blarina vs Blarina

genus Blarina and Blarina both are nouns.

Word	Noun	Adjective	Verb	Adverb
genus Blarina	Yes	No	No	No
Blarina	Yes	No	No	No

As nouns, genus Blarina and Blarina are synonyms defined as:

genus Blarina and Blarina: a genus of fairly large shrews with fairly short tails (Blarina)

genus Blarina (noun)	Blarina (noun)
a genus of fairly large shrews with fairly short tails (Blarina)	a genus of fairly large shrews with fairly short tails (Blarina)