HALOSAURID^. 
165 
The type species, known only by the unique type specimen, 
probably attaining a length of about 0’2. Anal fin with not less 
than 25 rays, and dorsal fin apparently completely opposed to it. 
Form. ^ Log. Upper Cretaceous : Baumherg, "W^estphalia. 
Aot represented in the Collection. In the type specimen in the 
Academy of Miinster some of the anterior vertebral centra seem to 
show that a large remnant of the notochord pierced them. The 
haemal spines are somewhat thickened but not fused together at the 
base of the caudal fin. Long and delicate intermuscular bones are 
conspicuous, extending nearly to the end of the tail. The extended 
anal fin (“ dorsal” of von der Marck) is clearly separate from the 
caudal, and exhibits remarkably short supports. The dorsal fin is 
represented only by five articulated and divided rays opposite the 
middle of the anal; but the specimen is so much distorted that the 
original relationships of these two fins are uncertain. 
Enchelurus syriaciis, sp. nov. 
[Plate XII. figs. 1, 2.] 
Type. Distorted fish ; British lluseum. 
A species attaining a length of about 0T2. Length of head with 
opercular apparatus equalling twice the maximum depth of the 
trunk, and probably contained about three times in the length from 
the pectoral arch to the base of the caudal fin. Operculum nearly 
as deep as broad, its hinder border slightly produced into a broad 
crimped prominence. Vertebrae approximately 100 in number. 
Pelvic fins, each with about 8 rays, inserted opposite the origin of 
the dorsal fin, which comprises from 16 to 18 rays, and arises as 
far from the occiput as its termination from the base of the caudal 
fin ; anal fin with about 30 rays, arising opposite the hinder end of 
the dorsal fin. 
Form. Log. Upper Cretaceous : Sahel Alma, Mt. Lebanon. 
P. 5998. T 3 "pe specimen, shown of the natural size in PI. XII. 
fig. 1. The fish is accidentally bent upwards at the 
middle of the abdominal region, and the pectoral arch 
seems to be a little displaced backwards. The cranium is 
evidently low and elongated, but no other feature is 
recognisable in the head. There are remains of a 
tolerably robust opercular apparatus, with a few long 
and slender branchiostegal rays (hr.) below. Part of 
the stout and broad clavicle is seen, with remains of the 
scapular arch and pectoral fins behind. There is a large 
scapula above a smaller coracoid, without any intervening 
