Annotated solutions for Prize 28,297

* undefined solutions all have a carapace [17 across, 18, 21 across (rev), 17 down (rev)]

Across

1 hermitage HERMIT (crab) + AGE

9* beetle LE after BE(r)ET

10* scorpions C(a)PS ON OR IS (anag)

11* spider REDIPS (rev)

12 arthropod DOROTH(y) RAP (anag)

13* shrimp SHRIMP(ton) [Jean Shrimpton]

17 car R(un) + C(irc)A in reverse order

19 aurorae OUR AREA (anag)

20 Adamson A(dult)<DAM>SON [Joy Adamson]

21 cap CAP(0)

23 nectar TEN CAR (anag)

27* sea urchin SEA<U(niversity)>RCH + IN

28 confit CON + FIT

29* tortoises OISE’S after TROT (rev)

30 eidola onE IDOL Anonymously (hidden)

31 besetting BE SETTING

Down

2 escort someonE’S CORTege (hidden)

3 morphs SHR(1/0)MP (anag)

4 tripod TRIP + O(ver)D(ose)

5 gondola DO LONG (anag) + A

6 keep ahead PEEK(rev)/A(nswer)/HEAD

7 stodgiest S(econds) in DIET’S GOT (anag)

8* terrapins ER/RAP in TINS

14* barnacles N(itrogen) in CARS ABLE (anag)

15 arachnids HAD IN CARS (anag) [scorpions & spiders]

16* armadillo MA/D(aughter) in A(ma)RILLO

17 CEC C(onsumer)E(lectronics)C(ontrol) [H(igh)-D(efinition)M(ultimedia)I(nterface)]

18 rap double def

22 acetone E in AT ONCE (anag)

24* turtle T + (h)URTLE

25 schist SCH(ool) + IT’S (anag)

26 Gideon GIDE/ON