CHECKLIST OF REPTILES OF MEXICO 157 



2. Usually 3 or more pairs of nuchals; upper tertiary temporal (occasionally 



split) in contact with parietal; 26-28 scale rows around middle of body; 



limbs short, separated by 10-12 scales when adpressed laterals (p. 159) 



Two pairs of nuchals, or fewer; upper tertiary temporal separated from parietal 

 by contact of upper secondary temporal and nuchal 3 



3. Limbs, when adpressed, touching or overlapping in adults, forelimb reaching 



rear corner of eye; scale rows at middle of body often 30 or 32 4 



Limbs, when adpressed, separated from each other by 1 or more scale lengths; 

 scale rows at middle of body rarely 30 and apparently never 32 5 



4. "Usually 1 pair of nuchals or less; lamellae under fourth toe 19 or fewer; 



dorsolateral light stripe continuous". (Smith) caudaequinae (p. 158) 



Usually 2 pairs of nuchals; lamellae under fourth toe 20 (constant?); dorso- 

 lateral light stripe dark-spotted, interrupted silvicolum (p. 158) 



5. Usually nuchals on the two sides 1-2 or more (89 percent) ; lateral light line 



along head and neck poorly defined; axilla-groin/snout-vent percentage 59; 

 65 mm. maximum snout-vent measurement. 



gemmingeri gemmingeri (p. 159) 

 Usually nuchals on the two sides 1-1 or less (88 percent) ; lateral light line 

 along head and neck fairl}' well defined; axilla-groin/snout- vent percentage 

 56; 54 mm. maximum snout-vent measurement. 



gemmingeri f orbesorum (p. 159) 



6. Scale rows 30 or more 7 



Scale rows less than 30 9 



7. Tail blue or blue-gray, with traces of a cross-banded pattern evidenced by 



feeble dark bars visible laterally or by transverse series of light spots; legs 



longer, usually overlapping in adults 8 



Tail pink or reddish, with no traces of a cross-banded pattern, but instead with 

 a longitudinal dark line on each side at least at base; legs shorter, never over- 

 lapping in adults; dorsal scales 65 to 79, usually 69 or more. 



assatum assatum (p. 160) 



8. Dorsal scales 65 to 72, average 69.1 cherriei stuarti (p. 158) 



Dorsal scales 59 to 67, average 63.2 cherriei cherriei (p. 157) 



9. Tail blue or blue-gray, with traces of a cross-banded pattern evidenced by 



feeble dark bars visible laterally or by transverse series of light spots; legs 

 longer, usually overlapping in adults; dorsal scales 54 to 60, average 57. 



cherriei izbaac (p. 158) 

 Tail pink or reddish, with no traces of a cross-banded pattern, but instead with 

 a longitudinal dark line on each side at least at base; legs shorter, never 

 overlapping in adults; dorsal scales 58 to 72, average over 66. 



assatum taylori (p. 160) 



SCINCELLA CHERRIEI CHERRIEI (Cope) 



Mocoa cherriei Cope, Proc. Amer. Philos. Soc, vol. 31, 1893, p. 339. 



Lygosoma assatum cherriei, Stuart, Occ. Pap. Mus. Zool. Univ. Michigan, No. 



421, 1940, pp. 13-14. 

 Lygosoma cherriei cherriei, Smith, Proc. Biol. Soc. Washington, vol. 54, 1941, pp. 



181-182. 

 Leiolopisma cherriei cherriei, Smith, Herpetologica, vol. 3, 1946, p. 111. 

 Scincella cherriei cherriei, Mittleman, Herpetologica, vol. 6, 1950, p. 20. 



Type. — Amer. Mus. Nat. Hist. No. 9531; George K. Cherrie 

 collector. 



Type locality. — Palmar, Costa Rica. 



