CUTANEOUS. 105 



C. 72. A section of u muscle, consisting of a single series of 

 oblique fibres, constituting the half-penniform muscle. 

 0. C. 38. Huntenan. 



C. 73. A section of a muscle, consisting of a double series of 

 oblique fibres, constituting the coinplete-penniforni muscle. 

 0. C. 39. Ilunterian. 



C. 74. A section of a penniform muscle. 0. C. 40. Huntenan, 

 C. 75. A section of a penniform muscle. 0. C. 41. Ilunterian. 



C. 76. A transverse section of a complex muscle, to show the in- 

 termixture of the muscular and tendinous fibres. 0. C. 44. 



Hunterlan. 



C. 77. A section of a muscle, in which the fibres are disposed 

 obliquely in several double series, with tendon intervening; 

 constituting the complex muscle. 0. C. 42. Huntenan. 



C. 78. A longitudinal section of a complex or multi-penniform 

 muscle. 0. C. 43. Hanterian. 



C. 79. A transverse section of a complex muscle. 0. C. 45. 



Huntenan. 



REGIONAL. 



Cutaneous. 



In all classes above Fish, the names attached to individual muscles are 

 taken from Bronu's Thier-reichs. An exception has however been made in 

 the case of the hind limbs of the Lizard (Nos. C. 173 & C. 174), in which 

 the names employed by Gadow (Morph. Jahrb. vii. 1882) have been substi- 

 tuted to facilitate comparison with the Crocodile. 



C. 80. The skin of a Hedgehog (Eriuaceus europceus) with the 

 head, limbs, and tail, showing the powerful cutaneous 

 muscles by the action of which the Hedgehog is rolled into 

 a ball and completely enveloped and protected by the dorsal 

 spine-bearing region of the skin. They can be conveniently 

 separated into those concerned with (1) rolling, and (2) 

 unrolling. The first group comprises the large orbicularis 

 panniculi, a broad muscular band peculiar to the Hedgehog. 



