Caecilia

Gigantic (30’ long), grey, worm-like amphibians, with huge, toothed maws.

AC6 [13], HD6* (27hp),
Att 1 × bite (1d8), THACO 14 [+5],
MV 60’ (20’), SV D12 W13 P14 B15 S16 (3),
ML 9, AL Neutral, XP 500, NA 1d3 (1d3), TT B

• Swallow whole: On a natural 19 or 20 attack roll. Inside the monster’s belly: suffer 1d8 damage per round (until the caecilia dies); may attack with a dagger at –4 to hit; body digested in 6 turns after death.

Source: Classic Fantasy