86 
PISCES. 
and describes (Ichth. g^n^r. ii. pp. 322-369) 17 species of Lepidosteus, 8 of 
CylindrosteuS) and 6 of Atractosteus : altogether 30 species, the majority of 
which are named by the author ! The heads of several are figured on pis. 21 
& 22 . 
Amia. Dr. Gunther states that there is only one species of Amia {c(dva)j 
Fish. viii. p. 325. — Prof. Dumdril describes 11 species, adding 2 to those 
previously named, Ichth. g^n^r. ii. pp. 410-420, pi. 25 (head &c.). 
HOLOCEPHALA. 
Callorhynchus. There is only one species known at present, C. peronii (A* 
Dum.) being founded on young examples. Giinther, Fish. viii. p. 351. 
Chimcdra monstrosa. Note on the brain by Miklucho-Maclay, J ena. Zeitschr. 
V. 1870, p. 132. 
PLAGIOSTOMATA. 
Gegenbaur, C. Ueber das Skelett der Gliedmaassen der Wir- 
belthiere im Allgemeinen und der Hintergliedmaassen der 
Selachier insbesondere. Jena. Zeitselir. v. 1870, pp. 397- 
447, tabb. 15 & 16, and woodcuts. [On the Skeleton of the 
limbs of Vertebrates generally, and of the hind limbs of 
Selachians especially.] 
. Ueber die Modificationen des Skelets der Hinderglied- 
maassen bei den Mannchen der Selachier und Chimairen. 
Ibid. pp. 448-458, with fig. [On the modifications of the 
Skeleton of the hind limbs in the males of Selachians and 
Chimseras.] 
TDr. Gunther has adopted the following arrangement (Fish, 
viii. p. 353) : — 
First suborder SELACHOIDEI. 
Fam. 1. Carchariidje. 
Group A. Carchariina. 
1. Carcharias (Ouv.), with 46 species, two of which are new, viz. C. 
{Hypoprion) playfairii, from Zanzibar, p. 302 j and C. (Frionodm) 
hrachyuruSj fiom New Zealand. 
2. Ilemiycdeus (Blkr.), with 2 species. 
3. Loxodon (M. k II.), with 1 species. 
4. Qaleocerdo (M. & II.), with 3 species. 
6. Thalmsorhinus (M. & II.), with 2 species. 
0. Galeus (Cuv.), with 2 species. 
Group B. Zygjenina. 
7. Zyycena (Cuv.), with 5 species. 
Group 0. Mustelina. 
8. Triamodon (Gthr.), with 1 species. 
9. Leptocarcharias (Gthr.), with 1 species. 
10. Triads (M. & II.), with 3 species. 
11. Mustelus (Cuv.), with 8 species, one of which is new, M. antarcticus, 
p. 387. 
