Material and Methods
Counts and measurements follow Kullander & Britz
(2002). Morphometric measurements were made point to
point on the left side of the specimens (as far as possible)
with an electronic digital caliper to the nearest 0.1 mm.
Meristic counts were made under a PC-based binocular
stereo zoom microscope (Leica S8APO) with transmitted
light. Body proportions are expressed as percentages
with respect to standard length (SL). Snout length and
orbital diameter are further expressed as percentages of
head length (HL)