56 ROY L. MOODIE 
pital cross-commissure and the ring-like formation of the temporal 
and jugal canals which is too clearly indicated to be overlooked. 
MEASUREMENTS OF THE TYPE oF Tuditanus tabulatus COPE 
Medianvlensthrot thesskullss a ee eee ee ia 29 
Width of skull at posterior border, estimated................ 37 
Wadthibetweenvepioticancless seme er os ee Hea ena Rae 18 
Tenth Oforbity tia) aaene alee a use ake ae oe eee Neer ae 8 
Widthiot orbite7 cc Sora a ier ree ante orty: b lee nea nae 6.5 
Diameter/ofmostnilidesssthane see ame denen eee cre nee I 
Diameterof pinealfioramenvless thanesn 0 eee I 
Wengthi ofprights clavicle s.3: ty ievsie Pattee general mainte na 13 
Width) of right, clavicle.) ste sc patent aetna einen pera sare Sots 
The specimen with its obverse representing this species is from 
Linton, Ohio. It formed a part of the collection of Dr. J. S. New- 
berry and is now in the Zoological Collection.of Columbia University, 
New York City. ; 
‘TUDITANUS MINIMUS sp. nov. 
(Fig. 10) 
The form represented by the above-named species is preserved on 
one side of a slab of slate, belly downward, from Cannelton, Pennsyl- 
vania. ‘The obverse slab has been lost, which is very unfortunate, 
since there is no doubt that the entire skeleton was preserved. 
The species is placed in the genus Tuditanus on account of the close 
resemblance to the type form T. punctulatus Cope, although it is 
much smaller than that species. It is in fact the smallest of the Micro- 
sauria which the writer has thus far studied. 
Tuditanus minimus, as the name implies, is not only the smallest 
member of the genus but of the suborder as well, as has just been 
stated. It did not attain a total length of more than three and one- 
half inches. Its form is very lizard-like but its structure is typically 
stegocephalan. The form of the skull is especially similar to that of 
the type species 7. punctulatus which it resembles in the narrow 
posterior truncation of the skull, as well as in the anterior position of 
the orbits. 
The skull is in the form of a narrow oval, sharply narrowed pos- 
teriorly and truncate. The orbits are located well forward and their 
