. Advances in herpetology and evolutionary biology : essays in honor of Ernest E. Williams. Williams, Ernest E. (Ernest Edward); Herpetology; Evolution. 24 Advances in Hcrpctologij and Evolutionary Biology nostrils behind snout, intemarial about ; eye-nostril varying with de- velopment, about in stage 36. Oral disk vential, subterminal, cuplike; width about ; both lips with deep, median indentation; small homogenous papillae in single row around entire mar- gin of lips; small round inframarginal papillae flank lower dental rows; infra- marginal papillae without denticles; bro
. Advances in herpetology and evolutionary biology : essays in honor of Ernest E. Williams. Williams, Ernest E. (Ernest Edward); Herpetology; Evolution. 24 Advances in Hcrpctologij and Evolutionary Biology nostrils behind snout, intemarial about ; eye-nostril varying with de- velopment, about in stage 36. Oral disk vential, subterminal, cuplike; width about ; both lips with deep, median indentation; small homogenous papillae in single row around entire mar- gin of lips; small round inframarginal papillae flank lower dental rows; infra- marginal papillae without denticles; broad band of lower lip smooth between dental rows and marginal papillae. Den- tal formula variable, in stages > 25 upper lip 1:3+3 to 1:6+6, lower lip usually 2+2:1; undivided row of lower lip longer than first divided row; undivided row of upper lip around one-third length of lower one; denticles laterally com- pressed, curved and pointed (Fig. 6). Beaks heavy, fully pigmented, finely ser- rated; upper beak without enlarged me- dian cusp. Spiracle sinistral, mid-lateral; with raised ventrolateral edge, free only at end; opening behind snout. Anal tub dextral, attached to ventral fin. Tail about of HBL, margin very slightly convex, tapering gradually in last third to rounded tip; maximum depth be- fore mid-length, of HBL, about of tail length. Caudal muscle heavy, of HBL at end of body, not tapering until point of maximum tail depth. Dorsal fin origin just beyond level of anal opening; very low in proximal fourth; equal to depth of muscle only in distal third. Ven- tral fin deeper than dorsal only in proxi- mal fourth. Head and body without asperities or glandular patches. Lateral line system visible on HB and tail. Coloration (in preservative) with light or heavy dusting of melanophores dor- sally on HB and proximal two-thirds of caudal muscle; lower half of body, fins, and distal third of caudal muscle without pigment. HBL of two largest stage 25 larv
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Keywords: ., bookauthorharvarduniver, bookcentury1900, booksubjectherpetology
