Mephisto 2577

[surepseh]

15a - Redolent of the bleaker side of life - lacking fiery passion (7) - is this "noirish"?
33a - Lacking part, vent energy where public displays are tolerated (6). I have E?UVI?
Many thanks.

[kayakamina]

15a Noirish - redolent ....No(t) Irish

[boxtops]

33 if your letters are right then EXUVIA fits, which relates to shedding skins - but not sure how to justify this against the clue...

[aeronut]

Eruvim or eruvin, more likely the former judging from the wordplay

[tenflags]

it's eru vim
plural of eruv

[bathtub]

Eruvim is indeed the answer: eru(pt) + vim.

This plural form isn't however given in Chambers. 'Tripe' is also not an accurate definition of the answer at 22dn. The two products concerned are made from different parts of different animals, and they look and taste different, too!