. Breviora. 1964 AN ANGUID FROM MONTSERRAT As indicated, slides were made of scales from various ])arls of the body; of the monofropis only ]\ICZ 37139 had sufficient scales for a parallel set of i)reparations. There are numerous scale organs on the prefrontal, frontal, frontoparietal, parietal and occipital scales; there are none on the interparietal [many]. Ten rows of ten dorsal scales (less three missing) had an average of [] scale organs per scale. The totals of scale organs for ten longitudinal rows of ten showed a variance of per cent; the totals for ten transverse rows of
. Breviora. 1964 AN ANGUID FROM MONTSERRAT As indicated, slides were made of scales from various ])arls of the body; of the monofropis only ]\ICZ 37139 had sufficient scales for a parallel set of i)reparations. There are numerous scale organs on the prefrontal, frontal, frontoparietal, parietal and occipital scales; there are none on the interparietal [many]. Ten rows of ten dorsal scales (less three missing) had an average of [] scale organs per scale. The totals of scale organs for ten longitudinal rows of ten showed a variance of per cent; the totals for ten transverse rows of ten showed a variance of per cent. This suggests that a transverse or oblique row gives a more reliable count than a longitudinal row. Six of the scales lacked central keels; for the others the central keel divided the scale organs into two groups, mesial and lateral [central keel does not separate two groups]. Counting the scale rows from the vertebral line, the majority of scale organs lie on the lateral side of rows 1 and 2, the mesial side of rows 3 and 4, and all on the mesial side of rows 5 and 6. Descending the flank the scale organs become reduced in num- ber; on the belly there are none [on belly organs/scale]. Three rows of ten scales forwards from the groin had a mean of organs/scale []. On the dorsal tail scales there are very many scale organs, 42 - 73/scale [9 - 11/scale], falling to none on the underside [3 - 4/scale].. Fig. 3. Mesial view, left ramus of lower jaw of Diploglossus montisscrrati type. Left dentary bears 20 teeth. Teeth cylindrical; crowns of an- terior teeth laterally compressed, crowns of posterior teeth rounded; many of the teeth show signs of wear on the lingual side of the crown. The outer face of the dentary has six foramina. I am indebted to Dr. Robert Hotfstetter for drawing my attention to the existence of a foramen on the inner face of the surangular before the posterior branch of the coronoid in the Cordylidae and some
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