CHONDliOPTERYGlI. 
IHsces 8 
CHONDROPTERYGII. 
Callirrhynchus, Several species besides the one mentioned by Hutton 
are found in New Zealand seas. C. dasycaudatus, sp. n,, W. Colenso, 
Tr. N. Z. Inst. xi. pp. 298-300, pi. xvii. 
Selache maxima. On the structure of the comb-like branchial appen- 
dages and of the teeth of the Basking Shark. W. Turner, J. Anat. 
Phys. xiv. pp. 273-28G, pi. xii. [See Zool. Roc. xiv. Pisces^ p. 8, & xv. 
Pisces, p. 12.] 
A critical study of the statements made by Fabricius in tlie “ Fauna 
Groelai^dica,” and in bis posthumous MS. papers, shows that the introduc- 
tion of Selache maxima into the Greenland fauna was only founded upon 
arbitrary interpretations of fabulous stories by the Eskimo. It must, 
therefore, be erased from that fauna. Only a single specimen is recorded 
as captured in Iceland during the last half-century. Liitken, Vid. Medd. 
1879-80, pp. 62-64. 
Carcharias {Eulamia) nicaraguensis, Gill. The figure left by the late 
A. S. Orsted, who observed this fresh-water shark, lately so designated by 
Gill, in the river St. Juan de Nicaragua, is reproduced as a woodcut, by 
Liitken, Vid. Medd. 1879- 80, pp. 65-68. 
Lcemargus rejected in favour of Somniosus, the first name being pre- 
occupied by Kr^yer in Crustacea. The propagation of S. microcephalus, 
the Greenland Shark, or “ Haakal,” must be different from that of all 
other Selachians. While S. rostratus and Scymnus lichia are known to 
bo viviparous in the ordinary way, this mode of parturition is entirely 
unknown in S. microcephalus. No fo 3 tus of it exists in any museum, nor 
has ever been described ; it is unknown also to the Eskimo residents 
and shark-hunters in Greenland, Iceland, Faroe, or Danish Greenland. 
Fabricius’s statement “est vivipara” must, therefore, be entirely rejected. 
No egg enclosed in a corneous egg-case^ like that of Scy Ilium, Raia, &c., 
has been found in the abdomen of a “ Haakal ” ; but only a large number 
of great, soft, globular eggs without any hard shell. It might have 
been supposed, from the earlier accounts of the anatomy of this 
shark, that these eggs were dropped into the abdomen, carried out- 
wards through pori abdominales, and fecundated after depositiori, but 
the discovery of the oviducts now leaves it questionable whether 
fecundation takes place outside or inside the body. Indubitably, 
however, the eggs are deposited without any solid covering in the 
soft mud at the bottom of the deep sea, and this fact agrees with the 
apparent want of any uterine dilatation, shell-secreting glands, &c., in 
the oviducts of the great northern shark. Liitken, Vid. Medd. 1879-80, 
pp. 56-61. 
Cestracion. Under the heading, “ Plagiostomata of the Pacific, Part I.,” 
Miklucho-Maclay & W. Macleay have redescribed and figured the follow- 
ing species of this genus, for which they prefer using the name Hetero- 
dontiis, Bl. : H. philippii, p. 309, galeatus, Gthr., p. 313, francisci, Gir., 
p. 315, quoyi, Frem., p. 316. “Anatomical remarks” are appended to 
these notices: on the dentition of young and adult Cestracion philippii, 
