MAMMALIA. 
33 
Fam. 1. Baljenidj^, = gen. Baljena of C. (L 
1. Balamaj typo B. mysticetus. 
2. Eubalcsna, type B. australis. 
3. Caper ea^ type B. antipodarum. 
Fam. 2. BAJL^N0PTEiiiD.a3. 
a. Megapterina, = gen. Megaptera of C. C. 
1. Megaptera^ fjpG -M. longimana. 
2. Boescopia^ type Balcena lalandii (Fisch.) ; to this division 
belongs also a new species, Megaptera novee zelandicc, p. 207, 
known from the tympanic bones only. 
b. Bhysalina. 
' 3. Benedeniuj type B. Knoxiij formerly described as Physalus 
hoops (Gray). 
4. Physalus^ type Ph. antiquorum. 
5. SibhaMus, type Balcmoptera laticeps (Gray) ; to this genus 
also belongs 8. borealis (part., Fisch.), the synonymy of which 
is fully worked out. 
6. Balcenoptera, type B. rostrata. 
Sect. II. Denticete, comprising the families of Catodontidje and 
BELPHiNiDiE of Cat. Cetac. 
Fam. 3. Catodontid.®, remains unchanged, 
a. Pelphmina. 
= gen. 
Physalus 
of Cat. 
Cetac. 
1. Steno. 
2. PelphinuSy further subdivided into Delphis (type 2). delphis)y 
Clymene (type D. euphrosyne), Tursio (type 2>. tursio). 
3. Lagenorhynchus. , 
b. Hyperodontina. 
4. Jlyperodoji, type II. hutzhopf. 
5. Lagenocetus, type H. latifrom. 
c. Ziphiina. 
6. Zipliius. 
{Aliama, type A. desmarestii, from the Mediterranean). 
d. Globiocephalina. 
7. Globiocephalus. 
e. Phoccenina. 
8. Orca'^ 9. Grampus] 10. Phoccena] II. Beluga] 12. Monodon. 
II. Suborder SIRENIA. 
A single specimen of a Manatus appears to have found its way to the 
Shetland Islands. 
In a second paper (Ann. & Mag. Nat. Hist. 1864, xiv. p. 345), 
Dr. Gray gives a Synopsis of the tribes, genera, and species of 
Whalebone- Whales [Mysticete, Balaenidae) j characterizing the 
tribes and genera. He observes that in very young specimens 
and in the foetus the head is comparatively not so large as in 
the adult. It also appears that certain parts which become 
ossified in most kinds of Whalebone- Whales do not become so 
in others. Thus the lateral processes of the cervical vertebrse 
of Megopieraj Benedenia, and Physalus seem to be nearly of the 
same form in the young and cartilaginous state ,* that is to say, 
1864. [voL. I.] D 
