1894.] ANATOMY OF PALAMEDEA CORNTJTA. 543 



Ueo-coccygeus. — This muscle is divided into two slips. The 

 outer thicker slip is entirely fleshy ; it arises from the dorso- 

 medial face of distal ileum only. It is inserted on to the outer- 

 most rectrix. 



The inner thinner portion of the muscle is also entirely fleshy. 

 It arises from the sacro-ileal ligament. It is only one quarter the 

 size of the outer muscle. 



Pubo-coccygeus extemus. — This muscle is a flat band with its 

 wide and fleshy origin from outer posterior dorsal margin of the 

 pubis behind its connection with ischium. It narrows to be 

 inserted fleshy upon the under surface of the external rectrix. 



Pubo-coccygeus interims. — It arises from the ends of the pubis 

 and ischium under the last-named muscle. It is inserted onto the 

 underside of the last one or two caudal vertebrae. 



Depressor coccygis. — It arises partly from the transverse process 

 of the last sacral vertebrae, and partly from adjacent surface of 

 ileo-sacral ligament. It is inserted on to the transverse processes 

 and haemapophyses of last three or four caudal vertebrae. 



Shoulder-girdle. 



RJiomboideus extemus. — This muscle arises tendiuously, the 

 width of the tendinous part being about the same as that of the 

 muscular part from the last cervical vertebra and all the dorsal 

 except the last. The fibres run forwards to be inserted fleshy 

 along the whole length of the scapula. The extreme front part 

 of the muscle is double, and may represent a portion of the 

 cucullaris. 



Rhomboideus internus. — This muscle arises tendinously, but has 

 much less tendon than the last. The fibres run backwards, both 

 the origin and insertion of this muscle being shorter than in the 

 case of the externus. 



Serratus anticus. — This consists of three portions. The first 

 arises from the last incomplete and from the first complete rib. It 

 is inserted on to the scapula between the two parts of the sub- 

 scapularis. The second part arises from the upper part of last 

 incomplete rib and runs to the scapula. The third part arises from 

 the upper part of the first complete rib. 



Serratus posticus. — Pars metapatagialis arises from the fifth 

 complete rib. Part 2 consists of two digitations arising from 

 complete ribs 3, 4, 5, at the points where the uncinate processes 

 should be and from the fascia between them. Insertion is on to 

 the tip of the scapula. 



Latissimus dorsi. — This muscle, as usual, consists of two parts, 

 which are quite separated by a wide space. The anterior part 

 arises from dorsals 1 to 3 ; it has a broad and fleshy insertion one 

 inch long ending just before the end of the deltoid. The posterior 

 division of the muscle is narrow and strap-like ; it arises from the 

 last three dorsals and from the anterior margin of the ileum. It 

 bifurcates just before its insertion ; part goes to form a meta- 



