PARA-ELEMENTAL

Ice, Smoke, Magma, Ooze.

The para-elementals are the inhabitants of the para-elemental planes,
Ice, Ooze, Magma, and Smoke, that lie between the major planes of
Earth, Air, Fire, and Water.
Para-elementals are summoned as normal elementals are,
except that there is a chance of not getting the summoned elemental but one from either of the major elemental planes adjoining it.
This chance is 100% minus 5% per level of the summoner.

Conjured para-elementals fall into 3 hit-dice-strength categories like
their major plane brethren:
those of 16 HD are conjured by spell;
those of 12 HD are conjured by summoning device;
and those of 8 HD strength are conjured by means of a staff.

Para-elementals are impervious to attacks from weapons of less than +1 enchantment
or by creatures without magical ability of 4 hit dice or less.
As with ordinary elementals, control over the para-elementals must be
maintained at all times, otherwise it will turn on its summoner. The
material components needed for summoning the para-elementals
(aside from a large amount of the <para->element) are as follows:
a lens of clear crystal or glass is used to summon ice elementals;
a damp cloth is used for ooze;
volcanic glass is used for magma;
and dry ash is used for smoke.
<a note can made at the individual entries>
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<in UA, 21-24 HD elementals are mentioned. full details for these should be provided>
<MM.99: note the reference to "with magical power">

<On page 141 of the MM2, in the Very rare section of Level VII, there are 4 listed para-elementals. I've used the 4 on this page. The 'para-elementals' are most likely quasi-elementals, which shoul be detailed in Dragon magazine>