220 
ACTi:S'OPIEIlYGII. 
with opercular apparatus much exceeding the maximum depth of 
the trunk, which is contained somewhat more than three times in 
the length from the pectoral arch to the base of the caudal fin. 
Length of mandible somewhat exceeding the depth of the head at 
the occiput. External tubercular ornament very fine. Yertebrae 
about 35 in number. Pins and scales apparently-as in the preceding 
species. 
Form. Log. Cretaceous : Island of Lesina, Dalmatia. 
P. 7452. Imperfect fish wanting the caudal fin, slightly larger 
than the type specimen. Among the crushed remains of 
the head may be observed impressions of the characteristic 
teeth of the ectopterygoid; there are also traces of the 
fine tubercular ornament of the mandible. The vertebrae 
are rather large, and seem to have been about 35 in total 
number. The fins are very imperfect, and the number of 
their rays cannot be counted ; but, so far as preserved, 
they seem to agree with those of H. microlepis. There 
are also obscure indications of the characteristic minute 
scales. Parchased, 1895. 
P. 7453. Ifore imperfect specimen, displaying the fine tubercular 
ornament of the external bones. The characteristic 
maxilla and supramaxilla are distinct. Purchased,, 1895. 
The following specimen is not specifically determined :— 
^ '49520. I'lsL wiHrat least 45 vertebrae and dorsal fin more remote 
than usual; Upper Cretaceous, Hakel, Mount Lebanon. 
There are traces of the small scales. Lewis Coll. 
The following imperfectly defined species are known only by 
fragments, and are not represented in the Collection :— 
\ 't-A 
I : 
Halec guestphalicusArcliceogadus guestplialicus, AY. von der 
: L' ' Marck, Palaeontogr. voi. xv. (1868) p. 291, pi. xlii. fig. 1, 
and (“ = Halec sternhergii ”) ihid. vol. xxxi. (1885), 
p. 241.—Upper Cretaceous (Planer); near Dortmund, 
Westphalia. [Type species of Archceogadus. Imperfect 
head and anterior abdominal region; Academy of Miinster.] 
Halec laubei, A. Fritsch, Eept. u. Fische bohm. Kreideform. 
(1878), p. 38, pi. X. fig. 4,—Turonian (Planer); Weis- 
senberg, near Prague, Bohemia. [Imperfect head ; 
German University, Prague.] 
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