666 REPORT Op COMMISSIONER OF FISH AND FISHERIES. 
sake of completeness, but as larval forms of unknown species they 
should have no place in systematic lists. 
A number of specimens before us, from Palermo, labeled by Dr. Dod- 
erlein Leptocephalus y inctatus, seem to be the young of the Conger. 
• 
121. LEPTOCEPHALUS CAUDILIMBATUS. 
Echelus caudilimbatus Poey, Repertorio, n, 249, 1867 (Cuba). Poey, Ann. N. Y. 
Acad. Nat. Hist., 322, 1870. 
Ovhisoma caudilimbatus Poey, Synopsis, 424, 1867 (Cuba). 
Conger caudilimbatus Poey, Enuraeratio, 152, 1875 (Cuba). 
Conger macrops Gunther, 40, 1870 (Madeira ; Bahama Islands). 
Conger caudicula Bean, Proc. U. S. Nat. Mus., 435, 1882 (Pensacola) ; Jordan & Gilbert, 
ibid, 262 (Pensacola) ; Jordan & Gilbert, Syn. Fish. N. A., 900, 1883. 
Habitat : Tropical Atlantic, Pensacola to Madeira. 
Etymology: Latin, cauda, tail ; limbatus , margined. 
Of this species we have examined several examples, identical with 
the type of G.caudicula, from the Snapper Banks of Pensacola. We 
do not see that these differ in any important respect from the descrip- 
tions of macrops and caudilimbatus and refer all to one species. 
Family IX.— ANGUILLIDCE. 
(The True Eels.) 
The true eels or Anguillidce are characterized by their scaly skin in 
connection with a conical head and a general resemblance to the Gon- 
gridce. The group is thus diagnosed by Dr. Gill: 
Enchelycephalous Apodals with conical head, well-developed opercular appara- 
tus, lateral maxillines, cardiform teeth, distinct tongue, vertical lateral branchial 
apertures, continuous vertical fins with the dorsal far from the head, pectorals well 
developed, scaly skin, and nearly perfect branchial skeleton. 
The Anguillidce approach more nearly than most of the other eels to 
the type of the true fishes. In one respect, that of the minute ova and 
concealed generation, however, they differ widely from these. The 
single genus of living Anguillidce is widely diffused in temperate and 
tropical waters. Unlike the other eels the Anguillidce freely ascend 
the rivers, descending to the sea for purposes of reproduction. 
ANALYSIS OP GENERA OF ANGUILLILME. 
a. Dorsal fin inserted well behind base of pectorals ; shoulder girdle well developed ; 
lower jaw projecting Anguilla, 44. 
Genus 44. — ANGTJILLA. 
Anguilla “Thunberg, Nouv. Mem., Stockholm, about 1795” (reference unverified). 
Anguilla Shaw, General Zoology, iv, 15, 1804 {Anguilla). 
' Terpolepis “McClelland,” {fide Day). 
