162 
ZOOLOGICAL LITERATUIIE. 
rilie teeth, whieli were disposed in two separate oblique bands, 
form now a continuous, nearly transverse series. 4. A narrow 
band of small posterior teeth in the lower jaw disappears. 
After the metamorphosis, those examples presented all the 
characters of Amblystoma, and there is no doubt that this form 
represents the developed state of the larval Axolotl. 
[The following questions remain to be solved : — 
1. What are the conditions under which an individual Axolotl 
either passes through a metamorphosis or remains in the tadpole 
state through life ? 
2. Do all the species of Amblystoma present a full-grown 
Axolotl-form, capable of reproduction, besides the fully developed 
form ? 
3. In what relation do the species of Axolotl distinguished 
by zoologists stand severally to the several species of Am^ 
bly stoma ?] 
Mr. Hogg lias published some notes on the position assigned by him to the 
Axolotl in the year 1841, and corrects two errors in Agassiz’s ^ Index Uni- 
versalis.’ Ann. & Mag. Nat. Hist. 1865, xvi. p. 122. 
A paper by E. de Betta on the tailed Batrachians of Venetia is known to 
us from the title only (see p. 140). 
Prince Max describes the following species in Nov. Act. Leopold. Carol, 
xxxii. : — Salama?idra symmetrica, p. 125 j S. eryihronota,^. 126 j /S', brevicatula, 
sp. n., p. 127 j S. maculata, p. 129 j S. mclauolouca, p. 130 j /S', dorsalis, p. 131 j 
Menopoma alleyhaniensis, p. 133, taf. 6 ] Menobranckus lateralis, p. 138, 
taf. 7. fig. 1. 
Triton cristatus. L. Reichenbach describes and figures a yellow variety 
(var. ieterica). Nov. Act. Acad. Leopold. Carol. Nat. Curios, xxxii. 1865 
(pp. 8, with a plate). 
IViton alpestris. Prof, de Filippi has observed, near Andermatten, that 
larvae of this species not only attained to the full size, but had the organs of 
reproduction fully developed, before they lost their brapchioe. The final me- 
tamorphosis of these newts is rapidly completed in autumn.- Mom. B. Accad. 
Sc. Torin. xxi. 1864-65, p. Ixv. 
Ilemidactylium pacijictmi, sp. n., Cope, Proc. Ac. Nat. Sc. Philad. 1865, 
p. 195, from Southern California. 
Speletpes. Mr. Cope describes three new species from the Tableland of 
Mexico, Proc. Ac. Nat. Sc. Philad. 1865, viz. Sp. cephalicus and Sp. or cuius, 
p. 196, and Sp. lineolus, p. 197. He mentions seven species known to inhabit 
Tropical America. 
Cryptobranchus japonicus. Prof. Hyrtl has published a mo- 
iiogTaph of this Salamander ; his researches are based on a 
female example, 2J feet long. He gives the history of our 
knowledge of this species, a description of the external characters 
of the specimen examined, and an account of its mode of life, 
and proceeds then to the chief object of the work, viz. the ana- 
tomical part. Detailed accounts of the osteology, splanchnology, 
and angiology are given. The work is written in Latin and 
illustrated by fourteen plates. (See p. 139,) 
