LEPTOLEPIDiE. 
513 
P. 930. Smaller specimen, wanting the greater part of the head, 
labelled “ Leptolepis paucispondylus ” by Miinster ; 
Kelheim. Egerton Coll. 
22519. Imperfect small fish 0*055 in length ; Solenhofen. 
Purchased , 1848. 
37063. Two more immature specimens ; Solenhofen. 
Hdberlein Coll. 
P. 934. Immature fish, somewhat contorted, probably of this 
species ; Pointen. Egerton Coll. 
37063, 37894, 37891,37896. Four immature fishes with incomplete 
vertebral centra, probably of this species ; Solenhofen. 
Hdberlein Coll. 
P. 3671. Similar specimen, labelled “ Leptolepis polyspondylus ” by 
Munster ; Pointen. Enniskillen Coll . 
P. 935. Another immature fish; Kelheim. Egerton Coll. 
Leptolepis sprattiformis (Blainville). 
1755. Figures by G. W. Knorr, Samml. Merkwiirdigk. Natur, pi. xxiii. 
figs. 2, 3, pi. xxviii. fig. 3, pi. xxix. figs. 2-4. 
1818. Clupea sprattiformis , H. D. de Blainville, Nouv. Diet. d’Hist. 
Nat. vol. xxvii. p. 330. 
(P) 1839. Leptolepis pusillus, G. von Miinster, Neues Jahrb. p. 680. 
[Immature fish; Palaeontological Museum, Munich.] 
1833-44. Leptolepis sprattiformis , L. Agassiz, Poiss. Foss. vol. ii. pt. i. 
p. 13 ; pt. ii. pp. 130, 294, pi. lxi. a. fig. 1. 
1839-44. Leptolepis macrolepidotus, L. Agassiz, ibid. pt. ii. p. 132, 
pi. lxi. figs. 4-6. [Immature fish.] 
1863. Leptolepis sprattiformis , A. Wagner, Abh. k. bay. Akad. Wiss., 
math.-phys. Cl. vol. ix. pp. 741, 744. 
1888. Leptolepis sprattiformis , K. A. von Zittel, Handb. Palseont. 
vol. iii. p. 272, fig. 279. 
Type. Nearly complete fish; Museum of Natural History, Paris. 
A small, slender species, attaining a length of about 0*11, but 
usually less. Length of head with opercular apparatus considerably 
exceeding the maximum depth of the trunk, and equalling about 
one-quarter of the total length of the fish ; caudal pedicle compara¬ 
tively robust, its depth about half the maximum depth of the 
abdominal region. Yertebfse about 50 in number, the centra short 
and stout, and the neural and haemal spines in the anterior part of 
the caudal region gently arcuated. Pelvic fins arising much nearer 
to the anal than to the pectorals; dorsal with about 14 rays, arising 
2 L 
PART III. 
