Got me curious, so I fished them out again.
The kit lens is Nikon DS AF-S Nikkor 18-55mm 1.35-5.6 G ED
The bigger one exactly the same, 'sept for 18-70mm 1.35-4.5
Underneath, they are both marked Nikon DX SWM ED IF Aspherical the range and Made in Thailand.
Just taken the cap of the kit lens for the first time in ages, and the face rim shows both Nikon and Nikkor on the same ring. Ha! so does the picture on the link above. Seems to answer the question.
Has anyone got any opinion about the build quality of the 40 v the old 50? My son looked at upgrading the pixel count but shied away from the general feel of the body. My dreams of getting one of the new big array units vaporized with conversation with a certain NY company. Load of gangsters.