. Bulletin of the British Museum (Natural History), Geology. CRETACEOUS FISHES FROM THE LEBANON 9i canal passed into the nasal. The nasals (na.), which were attached to the frontals by connective tissue, not by suture, are small, tubular bones, ornamented with ridges and tubercles. Between the nasals the large " V "-shaped dorsal part of the meseth- moid (mes.) is exposed. There is no trace of an antorbital in any specimen : the bone was probably absent, as it is in Caproberyx. In the roof of the orbit of the holotype and 105736 an orbitosphenoid (ors., Text-fig. 8) is visible, simil
. Bulletin of the British Museum (Natural History), Geology. CRETACEOUS FISHES FROM THE LEBANON 9i canal passed into the nasal. The nasals (na.), which were attached to the frontals by connective tissue, not by suture, are small, tubular bones, ornamented with ridges and tubercles. Between the nasals the large " V "-shaped dorsal part of the meseth- moid (mes.) is exposed. There is no trace of an antorbital in any specimen : the bone was probably absent, as it is in Caproberyx. In the roof of the orbit of the holotype and 105736 an orbitosphenoid (ors., Text-fig. 8) is visible, similar in size and shape to that of Caproberyx superbus but apparently without the lateral fenestra present in the latter ; in living holocentrids the orbitosphenoid is much reduced in comparison with these Cretaceous forms. As is usual in these small, crushed fishes from the Lebanon, no details of the basicranium are visible in any specimen. The parasphenoid is straight, with lateral flanges articulating with the endopterygoids. The vomer is not visible in any specimen. The lateral ethmoids (I. e.) are deep and well ossified. Infraorbital series. The infraorbital series consists of the usual five bones. The two posterior infraorbitals are small and slender with coarsely serrated posterior edges and a smooth flange covering the groove for the sensory canal. The first and second infraorbitals are longer and a little deeper, with the edge of the flange over the sensory canal serrated and coarse ridges on the ventral part of the bone. There is a art. ang. Fig. 8. Stichocentnts liratus gen. et sp. nov. Restoration of the skull in left lateral view, X3'5 approx. ang., angular; art., articular; den., dentary; enp., endopterygoid ; esc, extrascapular ; hm., hyomandibular ; , lateral ethmoid ; mpt., metapterygoid ; mx., maxilla ; , maxillary process of palatine ; ors., orbitosphenoid ; pa., parietal ; , post-temporal fossa ; qu., quadrate ; , subocular shelf; ssc,
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