diff --git a/lib/cartopy/_crs.pyx b/lib/cartopy/_crs.pyx
index a45dcacf9..edf36e242 100644
--- a/lib/cartopy/_crs.pyx
+++ b/lib/cartopy/_crs.pyx
@@ -140,17 +140,23 @@ cdef class CRS:
         return (cx, cy)
 
     def transform_points(self, CRS src_crs not None, 
-                                np.ndarray[np.double_t, ndim=1] x not None, 
-                                np.ndarray[np.double_t, ndim=1] y not None, 
-                                np.ndarray[np.double_t, ndim=1] z=None):
+                                np.ndarray x not None, 
+                                np.ndarray y not None, 
+                                np.ndarray z=None):
 
         cdef np.ndarray[np.double_t, ndim=2] result
         
+
         if z is None:
+            if x.ndim != 1 or y.ndim != 1:
+                raise ValueError('x and y arrays must be one dimensional')
             if x.shape[0] != y.shape[0]:
                 raise ValueError('x and y arrays must have the same length')
-        elif not x.shape[0] == y.shape[0] == z.shape[0]:
-            raise ValueError('x, y, and z arrays must have the same length')
+        else:
+            if x.ndim != 1 or y.ndim != 1 or z.ndim != 1:
+                raise ValueError('x, y and z arrays must be one dimensional')
+            if not x.shape[0] == y.shape[0] == z.shape[0]:
+                raise ValueError('x, y, and z arrays must have the same length')
 
         npts = x.shape[0]
 
diff --git a/lib/cartopy/mpl_integration/geoaxes.py b/lib/cartopy/mpl_integration/geoaxes.py
index b26b81da7..d3b9d2611 100644
--- a/lib/cartopy/mpl_integration/geoaxes.py
+++ b/lib/cartopy/mpl_integration/geoaxes.py
@@ -62,11 +62,6 @@ def __repr__(self):
     def transform_non_affine(self, xy):
         """Transforms from native coordinates to lat lons."""
         if isinstance(xy, numpy.ndarray):
-#            print xy.shape
-#            x, y = xy[:, 0:1], xy[:, 1:2]
-#            r = []
-#            for xpt, ypt in zip(x, y):
-#                print xpt, ypt
             return self.target_projection.transform_points(self.source_projection, xy[:, 0], xy[:, 1])[:, 0:2]
         else:
             x, y = xy