PLATE J. 
P>g- Page 
1. Brychaitus muelleri, sp. nov. ; head, left lateral and 
superior (1 a) aspects, one third nat. size. — London 
Clay ; Sheppey. d. Dentary. fr. Frontal. mx. 
Maxilla. orb. Orbit, pa. Parietal, pmx. Pre- 
maxilla. s.mce. Supramaxilla. s.o.l., s.o.2. Post- 
orbitals. 1 b. Seale. [p. 3893.] 77 
2. Ditto ; bead, right lateral and superior (2 a ) aspects, one 
third nat. size. — Ibid. op. Operculum, p.op. Pre- 
operculum. pet. Pectoral fin. sq. Squamosal. Other 
letters as above. 2 b. Premaxillary tooth. 
[P. 157.] 78 
3. Ditto ; right mandibular ramus, one third nat. size. — 
Ibid. [43020.] 79 
4. Ditto ; right premaxilla, outer and oral (4 a) aspects, 
one half nat. size. — Ibid. [43021.] 80 
