The Collaborative International Dictionary of English v.0.48:

Guttulous \Gut"tu*lous\, a. [L. guttula a little drop, dim. of
   gutta drop.]
   In droplike form. [Obs.]
   [1913 Webster]

         In its [hail's] guttulous descent from the air. --Sir
                                                  T. Browne.
   [1913 Webster]