https://doi.org/10.2307/1467082
Evaluation of 305 museum specimens of Ptychoglossus reveals that 10 of the 11 taxa previously associated with the genus represent valid species, including P. nicefori (Loveridge), removed from synonymy with P. brevifrontalis Boulenger, and the type species, P. bilineatus Boulenger, removed from synonymy with Leposoma picticeps Cope which is reasoned to be a junior synonym of Arthrosaura reticulata (O’Shaughnessy). Modern descriptions, including information on hemipenial morphology of all but two species, are provided for these, plus the five new species: P. danieli, P. gorgonae, P. myersi, P. romaleos, and P. vallensis. Intraspecific variation is assessed for all but three of the 15 species; those three are still known only from single specimens. Within a species, females tend to attain slightly longer bodies than males. Judging from comparisons of limb lengths to body lengths, this is due to elongation of the female trunk. An identification key to the 15 recognized species is included.
