FISHES or THE PHILIPPINE ISLANDS AND ADJACENT SEAS 129 



o^. MusTELiNAE. Teeth in bands or pavement, more than one series functional. 

 h\ Teeth compressed, cusps 3 to 5. 

 t\ Labial folds present. 

 f. No spiracles. 



]i\ Caudal with pit ; subeaudal produced Triaenodon 



k". Caudal without pit ; subeaudal rudimentary. 



Leptocharias 



f. Spiracles present Triakis 



f. No labial folds Eridacnis 



Jr. Teeth in pavement, labial folds long; subeaudal not produced. 

 Z\ Teeth blunt or with cusps rudimentary ; no nasoral 



grooves Mustelus 



V. Teeth with flattened crowns ; nasoral grooves present. 



Scylliogaleus 

 Genus PHYSODON Muller and Henle 



Physodon MtiLLEE and Henle, Syst. Beschr. Plagiostomen, p. 30, 1841. I Type, 

 Carcharias (Physodon) miilleri (Valenciennes) MtiUer and Henle, mono- 

 typic] 



Body slender, elongate, compressed, cavity nearly half of total. 

 Head long, depressed. Snout long. Eye with nictitating membrane. 

 Mouth greatly arched, with short labial fold. Teeth entire; upper 

 teeth flat, oblique, small in mandible medianly, laterally much 

 larger, swollen at base as with narrow oblique cusp; small median 

 upper teeth and 2 small lower symphyseal. Nostrils about % length 

 from mouth forward, far apart. Last gill opening above pectoral 

 base. Pit before upper caudal lobe. Fins small. First dorsal 

 nearer ventrals than pectorals. Anal much longer than second 

 dorsal. 



India, China, Australia. Though for many years but a single 

 species was admitted, another was described more recently from Aus- 

 tralia. 



ANALYSIS OF SPECIES 



a\ One upper median tooth, 2 lower ones miilleri 



0'. One upper median tooth, none below taylori 



PHYSODON MiJLLERI (Miiller and Henle) 



Carcharias (Physodon) miilleri (Valenciennes) Mtjixer and Henle, Syst. 

 Beschr. Plagiostomen, p. 30, pi. 19, fig. 1, 1841 (teeth) (type locality: 

 Bengal).— Blkekek, Verb. Batav. Genootsch. (Bengal), vol. 25, p. 80, 1853 

 (reference).— DuM^RiL, Hist. Nat. Elasmobr., vol. 1, p. 347, 1865 (type). 



Carcharias miUleri GrNTHEK. Cat. Fish. Brit. Mus., vol. 8, p. 360, 1870 (com- 

 piled).— Day, Fishes of India, pt. 4, p. 713, 1878 (Bengal).— Macleay, Proc. 

 Linn. Soc. New South Wales, vol. 6, p. 351, 1881 (Cape York).— Day, Fauna 

 British India, Fishes, vol. 1, p. 11, 1889 (Bengal). — Zugmayeb, Abh. Kon. 

 Bayer. Akad. Wiss. math.-phys. Kl., vol. 26, p. 8 (Mekran), p. 17 (Pasui), 

 1913. 



Carcharias niuelleri Ogilby, Proc. Linn. Soc, New South Wales, ser. 2, vol. 3, 

 p. 1767, 1888 (Cape York), 



