CHLAMYDOSELACHUS ANGUINEUS. 9 
At present, so far as is known, there are at least 15 specimens 
of Chl. anguineus preserved in the different museums of Europe 
and America.! 
Although, at present, the genealogical tree of this species cannot 
be drawn with certainty, it can hardly be doubted that amongst sharks 
of the present period, those of the Notidanus-group, approach nearest 
to it, within which the genus Hexanchus of the family Hexranchidae 
as well as Chlamydoselachus possess 6 branchial openings. But 
although the above mentioned group occupies a peculiar position 
amongst recent sharks, Chlamydoselachus differs likewise so greatly 
from the hitherto known forms of that group, that it undoubtedly 
ought to form, as proposed by Garman, so early as 1884, a separate 
family, Chlamydoselachidae; and younger American scientists have 
placed it under the extended group of the Notidanes, Diplospondyli, 
Hasse, an order which includes the most archaic types of the sub- 
class Selachii. 
The synonymy of the species is, on the whole, the following: 
Fam. Chlamydoselachidae. 
Chlamydoselachus anguineus, Garm. 1884. 
1884. Chlamydoselachus anguineus, Garm. ,An Extraordinary Shark“, Bull. Essex 
Inst. Vol. XVI, Jan. 17th, p. 3 (Salem 1884), Japan. 
1885. Chlamydoselachus anguineus, Garm. ,A living species of Cladodont Shark“, 
Bull. Mus. Comp. Zool. Harv. Coll. Cambr., Vol. XII; No. 1, p. 1; Pls. 
I—XX( Cambr. Mass. July 1885). 
1887. Chlamydoselache anguinea, Giinth., Rep. Scientif. Res. Voy. Challenger 1873 
—1876, Zoology, Vol. XXII, p. 2, Pls. LXIV, LXV (Edinb. 1887). Japan. 
SRS He VACTINGS cad 0 are) S-ODECIMIENS .. . .Pemetowiny. «vleekeee ys a6 Tokio 1881. 
Mus. Cambridge, (Mass.) 1 Specimen (type) (Length female 1580mm) Japan 1884. 
British Museum....... 3 Specimens (Length male 1250 mm., 
male 1390 mm., female 1474 mm). Tokio (1887). 
Mus. Prince Monaco... 1 Specimen (Length female jun. 610mm.) Madeira 1889. 
IATIStOM. LUSH NIOSCOUTS ODeCIMENS.. .. .Mamsniate tus eee clone «css Japan? 
IMS ZOOlwGICSE ve ss 1 Specimen (Length 1600 mm.)........ Japan. 
Mus. Hist. Nat. Bruxelles 1 Specimen (Length 1350 mm.)........ Japan. 
Bohm. Mus. Prag...... 1 Specimen (Length 950 mm.)......... Japan. 
Mus. Fritsetigerrag «...; 1 Specimen (Length about 1500 mm.).. Japan. 
Mus. Acad. Imp. Petersb. 1 Specimen (Length female 1520 mm.). Japan. 
Mus. Christiania....... 1 Specimen (Length female 1910 mm.). Norway 1896. 
My thanks are due to Dr. Boulenger (British Museum), Professor v. 
Beneden (Liége), Dr. Dupont (Brussels), Professor Ant. Fritsch and Dr. V. Fritsch 
(Prague), and Dr. Biichner (St. Petersburg), for the information they have 
supplied to me concerning the size and sex of several of the above mentioned 
specimens. 
1b 
