Nope... According to Connant's book, Alan Tennant's book, Kenneth Kelly's book, Mara's book and from other sources... here is the current lowdown- understanding that there is a move to split the genus up even further by moving the bullsnake BACK to species status:
First understand that when Connant's book first came out ALL of these were subspecies of Pituophis melanoleucus and the entire genus was considered to be monotypic....
Pituophis melanoleucus melanoleucus- northern pine
lodingi- black pine
mugitus- Flordia or Southern Pine
P. ruthveni- Louisiana Pine Snake
P. deppei deppei- Chihuan Pine
P. d. jani- Mexican Pine
P. lineaticollis lineaticollis - Plateau Pine
P. l. gibsoni- Gibson's Pine
P. c. coronalis- Coronado Island Gopher
P. c. bimeris- Baja Cali Gopher
P. c. fulginatus- St,. Martin Island Gopher
P. c. insluanus- Cedros Island Gopher
P. c. vertebralis- San Lucan Gopher
(The above sub-species could have been changed to another species- as they have been listed as subs of melanoleucus as well)
P. catenifer catenifer- Pacific Gopher
P. c. sayi- THE BULLSNAKE (though this could be made its own species as it has the WIDEST range of the genus)
P. c. affinis- Sonorian Gopher
P. c. annectens- San Diego Gopher
P. c. deserticola- Great Basin Gopher
P. c. pumilus- Santa Cruz Gopher
Ok thats it for now, and hope this helps break the confusion or add to it but this is as current as I believe the taxi's are at right now.
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BULLS: Pr normal (KS&TX), Pr Northern (M Medicine Hat, Alberta, Canada & F Minn), Pr Kankakee Co, Ill, CORNS: Pr Okeetee, SC, FOXES: Pr Western, KINGS: F Black Eastern (L.g.nigra) Todd Co. KY, Pr. Dekalb Co. AL, Pr. NC Eastern Chains (M from Union Co. & F from Mecklenburg Co.), Pr."Goini", Franklin Co. Fla, Pr. Costal Banded Cal (M Hypo & F normal) Pr Speckled, Harris Co. TX, MILKS: F Eastern, Charlotte, NC area, PINES: Pr Louisiana (pure descendants of Terry Vandeventer stock), Pr Southern (F light phase & M- Aiken, SC), PYTHONS: Pr normal Ball, RATS: Pr Black, Henderson Co. NC, F Western Green,(Mt. Hopkins, Cochise Co. AZ), OTHERS: 10 Tarantulas, 145 Orchid plants, 30 assorted tropical plants and African violets, 3 Freshwater Planted Aquariums with West African Dwarf and Discus Cichlids and 2 condo-porch gardens with Bonsai, Roses and more.