Description after BASS et al. 1975: [#134]:
The teeth of a 94cm male are shown in pl. 4. No sexual dimorphism was apparent in the few adult jaws examined. Tooth counts (for the large major teeth) were always 5-1-5 in the lower jaws and usually 10- 0, sometimes 9-9 or 11-11, in the uppers (in 11 sets of jaws). Australian specimens of H. perlo sometimes have six large teeth on each side in the lower jaws (see table 2 of Garrick and Paul 1971).
Material: female, 102 cm TL, Gulf of Mexico, col. 25.08.1990, collection: Jaws International, Gordon Hubbell, Florida
Images: © Ross Robertson, Smithsonian Tropical Research Institute, Panama, images shows the correct position of the teeth
Material: female, 100 cm TL, coll. by. Dr. Cigala Fulgosi, collection: Natural History Museum of Los Angeles County, nr. 37049-1
Material: male, 115 cm TL, Dakar, Senegal, © Jacques Herman, Beigem (Grimbergen), Belgique, images shows the correct position of the teeth