. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. New Species of Stenocercus from Peru and Bolivia • Cadle 209 cream colored lines" in the life colors of the holotype). The gular region appears uniform in many preserved specimens of Stenocercus prionotus, but I suspect this is a preser- vation artifact. Occasional specimens have pale spots in the pectoral region, and oth- ers are essentially unicolor and without ap- parent pattern (again, probably a preser- vation artifact). On the other hand, the throat pattern of Stenocercus caducus is highly variable and irre
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. New Species of Stenocercus from Peru and Bolivia • Cadle 209 cream colored lines" in the life colors of the holotype). The gular region appears uniform in many preserved specimens of Stenocercus prionotus, but I suspect this is a preser- vation artifact. Occasional specimens have pale spots in the pectoral region, and oth- ers are essentially unicolor and without ap- parent pattern (again, probably a preser- vation artifact). On the other hand, the throat pattern of Stenocercus caducus is highly variable and irregular. When a distinctive pattern is present, it most often consists of light spots rather than alternating stripes (Fig. 13). Cope (1862) described the holotype of S. caducus from Paraguay as having a dark throat that was "light varied" (, variegated, or spotted), and some speci- mens I examined have this pattern (Fig. 13). None of several color descriptions for Argentinian specimens of S. caducus men- tion stripes or spots on the throat. Scrocchi et al. (1985) described living examples as having pale spots in parallel transverse rows in the pectoral region or with pale spots on the abdomen, but did not com- ment on the throat pattern; Gallardo (1959) described the ventral coloration as "pale olive with some scattered pale spots; throat darker"; and Cei (1993) described the venter as "dark brownish with series of rounded pale spots, sometimes anastomos- ing along the length of a median ; Al- though no authors mention alternating light and dark stripes on the throat in S. caducus, UTA 38046 does have this pat- tern (Fig. 13). But in this specimen the stripes are confined to the lateral edges of the throat (, do not closely approach the midline as in S. prionotus). Apart from the throat pattern, the coloration of S. prion- otus and S. caducus seems to be veiy sim- ilar judging from descriptions of S. cadu- cus in the literature (Galla
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