of uniformity, as indicated by small tractors, and the establishment of the secret cause of their wasp models in form, size and shape of the two together at Delhi, the monumental colonnade. Fic. 3. Ottota minor Walcott, another gephyrean annelid. Fic. 5. Photo-micrograph of impression from rotogravure cylinder. Fic. 6. Amiskwia sagittiformis Walcott, a curious crustacean. PLATE II. i A y , pe A firing Spindle o Intercocking Lever A-