Schau mal im Lexikon, z.b Gemoll unter δέμας nach..

Kann mir wirklich niemand helfen?

δέμας (δέμω): frame, build of body; joined with εἶδος, φυή, and freq. with adjectives as acc. of specification, μι_κρός, ἄριστος, etc.—As adv., like (instar), μάρναντο δέμας πυρὸς αἰθομένοιο, Il. 11.596.

Hom. uses it only in acc. sg., absol., μικρὸς δέμας small in stature; ἄριστος δέμας, δέμας ἀθανάτοισι ἔοικε, etc.

...und zu noch:
http://www.perseus.tufts.edu/hopper/morph?l=demas&la=greek#lexicon

und hier speziell:
δέμας , to/, (δέμω)
[quote9A. bodily frame, usu. of man, Hom. (v. infr.); rarely of other animals, Od.10.240, Pi.O.1.20; prop. the living body, but also of a corpse, “νεκρὸν δ.” Batr.106, cf. S.Ant.205, E.Or.40, 1066, Sch. Ven.Il.1.115.—Hom. uses it only in acc. sg., usu. abs., μικρὸς δ. small in stature, Il.5.801; “ἄριστος εἶδός τε δ. τε” Od.8.116; “δέμας ἐϊκυῖα θεῇσιν” Il.8.305; “δέμας ἀθανάτοισιν ὁμοῖος” Od.8.14; “οὐ . . ἐστι χερείων οὐ δέμας οὐδὲ φυήν” Il.1.115, cf. Od.5.212; “δέμας καὶ εἶδος ἀγητός” Il.24.376, cf. Od.18.251; “χαρίεσσα δέμας” Hes.Th.260; “Κλύμενον . . ἀμώμητον δ.” B....[/quote]

so wollte ixh das eigentlich ...;-)
δέμας , to/, (δέμω)

A. bodily frame, usu. of man, Hom. (v. infr.); rarely of other animals, Od.10.240, Pi.O.1.20; prop. the living body, but also of a corpse, “νεκρὸν δ.” Batr.106, cf. S.Ant.205, E.Or.40, 1066, Sch. Ven.Il.1.115.—Hom. uses it only in acc. sg., usu. abs., μικρὸς δ. small in stature, Il.5.801; “ἄριστος εἶδός τε δ. τε” Od.8.116; “δέμας ἐϊκυῖα θεῇσιν” Il.8.305;[b] “δέμας ἀθανάτοισιν ὁμοῖος” Od.8.14[/b] ; “οὐ . . ἐστι χερείων οὐ δέμας οὐδὲ φυήν” Il.1.115, cf. Od.5.212; “δέμας καὶ εἶδος ἀγητός” Il.24.376, cf. Od.18.251; “χαρίεσσα δέμας” Hes.Th.260; “Κλύμενον . . ἀμώμητον δ.” B....

Ich wollte eigentlich nur wissen, ob δέμας Acc. respectus ist oder was es sonst ist. Lexikon hab ich selber.

joined with εἶδος, φυή, and freq. with adjectives as acc. of specification [...] δέμας ἀθανάτοισι ἔοικε

Du musst zwischen den Zeilen lesen, dann hilft auch das Lexikon.