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46 



the parasphenoid's orbital part, tlien broadens out evenly and forms tiie roof of 

 the long, lube-like mouth; here its margin is thickened (with a lateral furrow in 

 the thickening) and along the margin are sutured the upper borders of the enlo- 

 and metapterygoid, and, towards the tip of the snout, the palatine. 



The intermaxillary (j) has a weak, but distinct ascending part; as in the 

 majority of bony lishes it forms the upper margin of the mouth and like the 

 under jaw has no teeth. The maxillary (ni.r) is fairly broad, especially below; 

 the mandible is composed of the usual three parts; its ascending process is also 

 composed here of Ihe dental (d) and the articular (ar). The angular (any) is small, 

 but distinct and as elsewhere in connection with the front end of the interopcr- 

 culum (io) by means of a short ligament. A slight indication of the prominent 

 hook on the dental in Amphisile can also often be delected here. 



pa I'M 



Kig. 27. 

 Ccnlriscus scuïi)[)(ir. liij^Iit iiiandibulary suspensorium, 

 fiK. 13 and 14 (p. CI (23)). 



en Ironi wilhin. Lelle 



Of the parts of the suspensorium (fig. 27) the hyomandibular (hi/) is long and 

 slender, directed obliquely forwards so that its lower end lies under the front part 

 of the orbit; -its upper end is as usually connected with the postfrontal and the 

 pterotic, especially with a cartilaginous process on the latter as in Amphisile and 

 also as in this obviously but little movable. The upper part of the inner margin 

 spreads out wing-like and almost touches the prootic and the portion of the para- 

 sphenoid ascending laterally on the skull. The outer margin touches the lower end 

 of the postfrontal. The lower end of the hyomandibular is cartilaginous and has 

 the same position as in Amphisile. The symplectic {sy) is connected proximally 

 by means of connective tissue with the lower cartilaginous end of the hyomandi- 

 bular and by a longer ligament with the inner surface of the epihyal of the hyoid 

 arch; above the symplectic is connected with the metapterygoid, below with the 

 preoperculum, anteriorly with the quadrate; the symplectic sends on to the inner 

 side of the posterior, lowest point of the last a long, thin process which contains 

 a permanent cartilaginous axis. The quadrate (qu) is exceedingly elongated, a 

 half-cylinder, outwardly convex, with almost parallel upper and lower margins; 



