. Bulletin. Science; Natural history; Natural history. 1976 VARIATION IN THE SNAKE TANTILLA SEMICINCTA 43. Figure 1. Dorsal color pattern of BMNH from "; fields extending from the lower half of the para- vertebral row to the upper half of the third scale row. The remainder of the dorsum and all of the venter is pale in color. The tail is not striped in either specimen, but rather is patterned with a series of irregular spots and/or narrow crossbands. The syntypes of Homalocranion lineatuin, which I have not seen, also exhibit this pattern (Fischer, 1883). The band
. Bulletin. Science; Natural history; Natural history. 1976 VARIATION IN THE SNAKE TANTILLA SEMICINCTA 43. Figure 1. Dorsal color pattern of BMNH from "; fields extending from the lower half of the para- vertebral row to the upper half of the third scale row. The remainder of the dorsum and all of the venter is pale in color. The tail is not striped in either specimen, but rather is patterned with a series of irregular spots and/or narrow crossbands. The syntypes of Homalocranion lineatuin, which I have not seen, also exhibit this pattern (Fischer, 1883). The banded pattern (Fig. 2) is present in 13 specimens examined. It consists of dark transverse bands on a pale groundcolor. The number of dark bands on the body ranges from 12 to 26 (x = ). They range from 5 to 12 scales in length (x = ) and extend laterally to a point ranging from the second scale row to the lateral edge of the ventrals. The pale bands range from 1 to 6 scales in length (x=). Frequently, the pale bands are broken middorsally and stag- gered. The percentage of broken pale bands ranges from 0 to (x = ). The number of tail bands ranges from 3 to 13 (x = ). The intermediate pattern is characterized by a high number of short dark bands (38^7) that are most frequently divided middorsally (showing a tendency toward development of a pale mid- dorsal stripe) and tend to be joined tii one another laterally (showing a tendency toward development of a dark dorsolateral field). They also are narrow, extending to somewhere on the third scale row. Figure 2. Dorsal color pattern of (A) BMNH from the Magdalena Valley, Colombia and (B) USNM 107324 from near Caracas, Distrito Federal, Venezuela. This pattern is present in four specimens examined (ANSP 20831. BMNH NMB 9154- 55). The pattern dimorphism in Taiuilla seinicincta bears a striking resemblance to that seen in the California Kingsnake (Lainpropeltis getiihts cali- forniae—see pa
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