They are all buried in the municipal cemetery at Cambusnethan village, (not in Kirkhill, the burial ground that this thread is concerned with).
Here's what I found, please remember that the Victorian records have gaps, I couldn't find Jane Blair for example, she must have been buried in a paupers grave and the paupers records for that year have not survived.
All the following dates are of burial.
HENRY McPHAIL, Wishaw, aged 8 years.
Parents - Henry McPhail & Agnes Lafferty.
Buried in common ground (pauper's grave) 22nd November 1862.
WILLIAM McPHAIL, Wishaw, aged 3 years.
Parents - Henry McPhail & Agnes Lafferty.
Buried in common ground on 3rd December 1862.
AGNES McPHAIL, housewife, Wishaw, aged 32 years, married.
Parents - William Lafferty & Margaret Blair.
Buried in common ground on 17th December 1862.
Although Agnes and her 2 sons are in common ground, remarkably they are all three in the same grave, number 138. The gravedigger must have gone out of his way to do this.
To continue -
HENRY McPHAIL, labourer, Wishaw, aged 57 years, widower.
Parents - Archibald McPhail & Margaret Crichton.
Buried in common ground on 30th March 1878.
ARCHIBALD McPHAIL, tailor, Wishaw, aged 33 years, married.
Parents - Henry McPhail & Nancy Lafferty.
Buried in private plot E55 on 7th August 1896.
In plot E56 are the following - (my guess is a double plot)
ISABELLA W. McPHAIL, wishaw, aged 1 year.
Parents - Matthew McPhail & Marion Ballantyne.
Buried in plot E56 on 28th April 1900.
MARION McPHAIL, Wishaw, aged 2 years.
Parents - George McPhail & Isabella Wyper.
Buried in plot E56 on 25th November 1893.
Also,
STILLBORN FEMALE McPHAIL, Wishaw.
Parents - Henry McPhail & Isabella Fleming.
Buried in common ground on 22nd October 1906.
Hope this leads you somewhere!