As Müller & Schlegel (1840) also figured a head skeleton, the RMNH skeletal collection was searched for
specimens collected by Müller. One specimen, RMNH.PISC.Sk.366, has an old label glued underneath the pedestal
with the text: “Osteoglossum formosum Verh. N. Ind.; Müller; Borneo”. This specimen, also mentioned in Van
Lidth de Jeude (1898: 35), measures 580 mm TL. We consider it to be a syntype. It has a damaged caudal fin
skeleton and lacks the ventral fins, but is otherwise in good condition (see Fig. 10C). However, this specimen
differs in many details from the head of the skeleton figured by Müller and Schlegel. Therefore we conclude the
figure must have been based on a second dissected specimen. We have not been able to find this specimen in the
RMNH collections.
As Müller & Schlegel (1840) also figured a head skeleton, the RMNH skeletal collection was searched for
specimens collected by Müller. One specimen, RMNH.PISC.Sk.366, has an old label glued underneath the pedestal
with the text: “Osteoglossum formosum Verh. N. Ind.; Müller; Borneo”. This specimen, also mentioned in Van
Lidth de Jeude (1898: 35), measures 580 mm TL. We consider it to be a syntype. It has a damaged caudal fin
skeleton and lacks the ventral fins, but is otherwise in good condition (see Fig. 10C). However, this specimen
differs in many details from the head of the skeleton figured by Müller and Schlegel. Therefore we conclude the
figure must have been based on a second dissected specimen. We have not been able to find this specimen in the
RMNH collections.
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