320 ROY L. MOODIE 
poral canal is very similar in the species figured by Wiman. 
In one species, Lonchorhychus 6bergi Wiman, there is a peculiar 
medial projection (fig. 4, b) which is asymmetrically developed. 
Wiman refers to the canals occurring on the squamosal and 
jugal as the ‘temporal-Kanile.’ They are either the anterior 
portion of the operculo-mandibular canal or the posterior part 
of the infraorbital (7.0.). For the sake of convenience the 
present writer has previously referred to them as jugal canal 
(O8, p. 515, fig. 1). Wiman seems not to have been aware of 
this paper. 
The ‘Maxillarkanal’ of Wiman is the infraorbital of other 
writers. It has a uniform course in the various skulls figured. 
Its entire course is shown in figure 3 (7.0.) which represents its 
occurrence in Lonchorhynchus 6bergi Wiman. 
On another skull figured by Wiman (14, pl. 5, fig. 1), that of 
Aphaneramma rostratum Woodward, the canals have a most 
unusual arrangement. The unequal supraorbital canals do not 
extend posterior to the orbits which are far forward; the temporal 
canal is extensive and runs down on the side of the skull to join 
the jugal. The projection is on one side a crescent far removed 
Fig. 1 Superior view of the skull of Lyrocephalus euri, Wiman, from the 
Triassic of Spitzbergen. After Wiman (’14). 
a.c., anterior commissure; f., frontal bone; hy., hyomandibular junction of the 
canals of skull and mandible; 7.0., infraorbital lateral line canal; 7., jugal canal; 
j’., Jugal bone; , nostril; or., orbit; p., parietal bone; pf., parietal (pineal) fora- 
men; p.0., postorbital; pp., postparietal; p.r.f., prefrontal+lachrymal; s.o., 
supraorbital lateral line canal; sq., squamosal; sf, supratemporal; ¢., temporal 
canal; x., posterior extension of supraorbital canal. 
Fig. 2. Superior view of the skull of Lonchorhynchus 6bergi, Wiman, from 
the Triassic of Spitzbergen. After Wiman (’14). 
b., aberrant extension of the jugal canal (fig. 4); 7.0., infraorbital lateral line 
canal; 7., Jugal canal; or., orbit; s.o., supraorbital lateral line canal; ¢., temporal 
canal. 
Fig. 3. Lateral view of the skull of Lonchorhynchus 6bergi, Wiman, from the 
Triassic of Spitzbergen. After Wiman (’14). 
b., aberrant bud from the jugal canal; 7.o., infraorbital canal. or., orbit; 
t., temporal canal. 
Fig. 4 Dorsal view of the skull of Lonchorhynchus 6bergi, Wiman. From 
the Triassic of Spitzbergen. After Wiman, (714). 
b., aberrant bud from the jugal canal; or., orbit; p.o., pineal opening; s.o., 
supraorbital lateral line canal; ¢., temporal lateral line canal. 
