18 SOLENODON PARADOXUS. 
for Solenodon cubanus, and the homology of these two portions with the rhom- 
boideus anticus and posticus respectively of Gymnura and Centetes is suggested. 
In Potamogale Dobson found these muscles coalesced to form a single sheet. 
The occipito-scapularis (Plate 5, fig. 4, b) arises along the lambdoid crest 
for about 10 mm. lateral to the mid-dorsal line. It passes back to the postero- 
external face of the scapula about 6 mm. below the coraco-vertebral angle 
where it is broadly inserted along the vertebral edge of the scapula. Its length 
is about 80 mm. 
The sterno-mastoideus (Plate 56, fig. 4, g) takes origin from the ventral sur- 
face of the presternum, where it is slightly overlapped by the ectopectoralis. 
It passes forward as a muscular band to a tendinous insertion at the lateral 
extremity of the lambdoid crest just above the ear. This tendon, as in Centetes 
and Gymnura is united with the tendon of the cleido-mastoideus as a common 
insertion. The cleido-mastoideus (Plate 4, fig. 4, h) takes origin from the antero- 
external edge of the ventral half of the clavicle. 
The levator claviculae (Plate 5, fig. 4, a) is well developed and takes origin 
from the atlas only near the median line at the antero-ventral margin. It passes 
back as a narrow band to a tendinous insertion on the ectal edge of the meta- 
cromion just back from its tip. 
The splenius arises along the dorsal line from about as far back as the fifth 
dorsal vertebra. Passing forward, it inserts along the mesial portion of the 
lambdoid crest from the vertex to just ental of the sterno-mastoid insertion. 
Anteriorly the portion arising from the first of the cervicals may be more or less 
readily separated from the posterior part of the muscular sheet. 
The complexus arises from the transverse processes of the vertebrae from the 
fifth cervical to the sixth dorsal. It has the usual insertion under the splenius. 
A lateral and a more median portion may be distinguished. 
The rectus capitis posticus major arises from just below the top of the neural 
spine of the axis and passes forward to its insertion beneath the lambdoid crest, 
in close union with the rectus capitis posticus minor whose origin is slightly 
more lateral. 
The obliquus capitis superior originates from the tip of the transverse process 
of the atlas, and goes forward to its insertion below the lambdoid erest at a 
point about 7 mm. lateral to the vertex of the occiput. It is also united by a 
slight raphe to the ecto-proximal portion of the digastric muscle. 
The obliquus capitis inferior is large and arises from the postero-lateral 
portion of the spine of the axis. Its course is obliquely forward to the posterior 
side of the transverse process of the atlas. 
