summon Skeleton ~ ~ ~ {CustomName:"2F3", Attributes:[

{Name:generic.maxHealth, Base:50}

], Equipment:[{id:"minecraft:bow", tag:{ench:[

{id:"minecraft:punch",lvl:10}

,

{id:"minecraft:flame", lvl:1}

]}},{},{},{},{}],Riding:{id:Silverfish, CustomName:"2F3", Attributes:[

{Name:generic.maxHealth, Base:100}

] }}

It doesn't work. (textures show enchanted bow but not effective)

summon Skeleton ~ ~ ~ {CustomName:"2F3", Attributes:[

{Name:generic.maxHealth, Base:50}

], Equipment:[{id:"minecraft:bow", tag:{ench:[

{id:49,lvl:10}

,

{id:50, lvl:1}

]}},{},{},{},{}],Riding:{id:Silverfish, CustomName:"2F3", Attributes:[

{Name:generic.maxHealth, Base:100}

] }}

It works.

But I cannot use number code in 1.8 release!