176 
MR, F. G. PARSONS ON THE 
[Jan. 14, 
these combined muscles in the various animals dissected are the 
following :— 
MAO CUS te Woe ste asks Pete 2-7 c. v. 
OP ECEIUS hor RAG 3-7, 
Gerbclliusi narochae cae ee Denil op 
Mach otusiimnel . cmereie ets 2 5 
MD OGES We ea hachte View = aetaets PE alle 
Mus barbarus.........00- 2-7 ,, 
Se Gh a ae Oe oS ee, 
APRAZAINGE: Godlee eh aie fh Tete aan 
Geongenus? Tee. oe lisse « amis 
SBOUMYOT.G WSs fy i ats aes tase se a 3-7 yy 
PACECT OMS. tora) a's, « olaabetgeiene s DET ies 
| 
HH ONI~1 WH © OO ATT 
oo 
4 
he 
Se ese ter 
77) 
. 
oP) 
Serratus Posticus.—In the Myomorpha the anterior part of this 
muscle is always present and well marked ; it is usually inserted 
into the ribs trom the 4th to the 7th, but in OCricetomys it is 
continued back to the 9th, and in Rhizomys to the 11th. In 
Georychus and Bathyergus it is inserted into the 6th, 7th, and 8th 
ribs. The posterior part of the serratus posticus was only seen in 
Microtus, Buthyergus, and Myodes; in the first it was inserted into 
the last 4, and in the two latter into the last 5 ribs. 
pf .COMPLEXUS. 
~-TRACH.MAS, 
SPLEW Cap. cue 
- Ser ert STS ee 
EKA y. Lely 
= x —= SSF 
iy y, 
TR.coLut.A 
4 
i. K\ 
Neck-muscles of Hamster. 
’ “| 
~~ 
; 
eee eS 
a 
