14 THE SESAMOID ARTICULAR 



In his paper "On the Cranial Osteology of the Fishes of the Families 

 Mormyridae, Notopteridae, and Hyodontidae" (Jour. Linn. Soc., vol. 

 XXIX), he reports a sesamoid articular present in Notopterus kapirat 

 and Hiodon alosoides. 



In his paper "On the Cranial Osteology of the Clupeoid Fishes" 

 (Proc. Zool. Soc. Lond., 1904) he finds a sesamoid present in Chirocen- 

 trus dorab, Alosa finta, and Chanos chanos, but fails to find any in Clupea 

 harengus, Dussumieria acuta, Engraulus encrasicholus, or Coilia nasus. 

 In Dorosoma erebi he mentions neither its presence nor absence. 



In his paper "On the Cranial Osteology of the Fishes of the Families 

 Osteoglossidae, Pantodontidae, and Phractolaemidae" (Jour. Linn. Soc., 

 vol. XXIX) he reports a sesamoid articular present in Osteoglossum 

 leichardti, and Heterotis niloticus, but absent in Arapaima gigas. In 

 Pantodon buchholzi, and in Phractolaemus ansorgii, he does not mention 

 a sesamoid articular, but his material was in the form of prepared skulls 

 and its absence might only mean that it was lost in preparing. 



In his paper "On the Skull of Gonorhynchus greyi" (Ann. Mag. 

 Nat. Hist., 1905) he reports a sesamoid articular present in Gonorhynchus 

 greyi. 



Elops saurus. 



The rather small sesamoid articular is attached to the ectosteal part 

 of the articular far in front of the endosteal part, and is somewhat 

 covered with Meckel's cartilage. A deep cavity, open in front, is par- 

 titioned off in the ectosteal part just behind the sesamoid articular by a 

 thin plate of bone. This is shown in Dr. Ridewood's picture (Proc. Zool. 

 Soc. Lond., 1904, vol. II, p. 40). 



Albula vulpes. 



SA t 



Fig. 5. ALBULA VULPES 



an, angular; d, dentary; ecpl, ectosteal plate; epr, endosteal process; me, Meckel's 

 cartilage; sa, sesamoid articular; t, tendon. 



