3o6 
ERIK A : SON STENSIO 
Fig. 2. Acrorhabdus bertili n. sp., the same head as in fig. i (P. 174) with some parts removed to 
show the branchial skeleton. 
». 3 - » a » » the same head as in the two figures above (P. 174), seen from the 
left side. On this side too the cheek plates and the opercular plates 
are weathered away. 
» 4. » > > supporting gill-rays from the specimen (P. 174) reproduced in the 
three preceding figures. 2 / v 
» 5. » » » » scales from the abdominal region of the specimen reproduced in 
figures 1—4 (P. 174). 2 / r 
Explanation of index letters. 
Art, articular; Bbr, ossifications in the copular row; Cbr, ceratobranchial; Chy, ceratohyal 
ossification; Cl, cleithrum; Ecpt, ectopterygoid; Enpt, entopterygoid; Hbr, hypobranchial; Hm, hyo- 
mandibular; Id, clavicle; Mco, mixicoronoid; Mptg, metapterygoid; Op, operculum; Pro.o, prootico- 
opisthotic; Psph, parasphenoid; Qu, quadrate; Rbr, branchiostegal ray; See, ossified primary 
shoulder girdle (scapulo-coracoid); Scl, supracleithral; Sop, suboperculum; Sph, sphenoid; Sscap, 
suprascapular; Sthy? stylohyal? Sympl, symplecticum; Uhy, urohyal; d, process on the scapulo- 
coracoid; ohy, ossification in the posterior end of the ceratohyal cartilage. This ossification corres¬ 
ponds to the so-called epihyal of Teleosts; pr. op, processus opercularis; V, exit of the trigeminus. 
Plate 32. 
Fig. 1. Platysomus nathorsti n. sp., ornament of scale preserved as impression in the stone (P. 142a). 2 / x . 
» 2. Acrorhabdus bertili n. sp., scale from the first or second vertical row behind the shoulder 
girdly (P. 174). 7 i- 
> 3. » » » » head seen from the right side. The same head as in PI. 3 i, 
figs. 1 —3 (P. 174). Parts of the clavicle have been remeved to 
show the ossified primary shoulder girdle. 
» 4. » » » » opercular apperatus shoulder girdle and a proximal part of the 
pectoral fin. Belongs to the same specimen as the head in the 
preceding figure (P. 174 ) and in figures 1 —3 PI. 3 i. The bones 
partly preserved as an impression of the lateral surface in the 
stone. 
» 5. » » » > head seen from the left side with some parts removed to show 
the gill-arches. The same head as in figures 3 —4 and PI. 3i, 
figs. 1 —3 (P. 174). 
Explanation of index letters. 
Ebr, epibranchial; Pc, pectoral fin; g, process .on the primary shoulder girdle plate, probably 
the place of articulation of the pectoral fin; n, nerve canal through the primary shoulder girdle 
plate; v, postero-ventral corner of the primary shoulder girdle plate; other index letters as in 
the preceding plate. 
Plate 33. 
Perleidus woodwardi nom. nov., nearly complete specimen (P. i 85 ). 
Explanation of index letters. 
A, anal fin; D, dorsal fin; Fr, frontal; Ifo, infraorbital bone; Md, mandible; Mx, maxillary; Op, 
operculum; Pc, pectoral fin; Pci, postcleithral plates; Po, preoperculum; Rbr, branchiostegal ray; 
So, supraorbitals; Sop, suboperculum; Sscap, suprascapular; V, ventral fin; orb, orbit. 
