.1865.] of Cystic Entozoa in the Calf. 217 



On subsequent rupture of the cyst, a microscopic examination of the con- 

 tained larva revealed the ordinary characters of the Cysticercus which pro- 

 duces the Taenia mediocanellata. 



Speaking generally, it may he said that the connective tissue and 

 cellular aponeuroses were very feebly invaded ; but in certain situa- 

 tions, such as those occupied by the linea semicircularis and fascia lum- 

 baris, several vesicles were closely associated ; moreover, as regards the 

 muscles themselves, extensive parasitic invasion was prevalent only in the 

 more superficial layers. It was likewise noticed, as obtains in the parallel 

 case of Trichina, that the larvae were disposed in the longitudinal direction 

 of the muscular fibres, being at the same time more numerously grouped 

 towards the points of osseous insertion or of aponeurotic attachment. Not 

 a few large vesicles had inflamed and suppurated, the cysts being occupied 

 internally by a thick green-coloured deposit. 



Referring to the left side only, we noted that all the breast-muscles 

 (pectoralis major, p. transversus, and p. anticus) were much infested, but 

 scarcely so fully as the more superficial panniculus carnosus. In the 

 latissimus dorsi and trapezius the cysts were very numerous, rather less so 

 in the combined levator humeri and sterno-occipitalis, somewhat fewer in 

 the rhomboideus brevis and rhomboideus longus, and exceedingly scanty in 

 the superior part of the scalenus, the remainder of this last-named muscle 

 being entirely free. The lateralis sterni contained none ; neither were any 

 observed in the abdominal region of the serratus magnus, but several vesicles 

 were lodged in the superficial cervical portion of this muscle. Not a few 

 existed in the upper part of the complexus major and in the complexus 

 minor, some also occurring in the longissimus dorsi ; yet none were 

 observed in the spinalis dorsi, in the superficialis costalis, or in the 

 diaphragm. 



Turning towards the neck-region, we found them abundant in the 

 sterno-maxillaris, considerably less so in the splenius, only one in the 

 hyoideus, several in the sterno-hyo-thyroideus, but none in the longus 

 colli. All the other deep-seated muscles of this region, including the 

 obliquus capitis superior and inferior, as well as the rectus capitis posticus 

 major and minor, appeared free from any trace of the vesicles. On the 

 other hand, all the superficial muscles of the face, such as the retractor 

 anguli oris, orbicularis oris, and levator palpebrarum, gave abundant evi- 

 dence of their presence, the vesicles being particularly numerous at the 

 outer part of the masseter externus. In like manner their presence was 

 only less strongly indicated in the muscles of the eyeball, such as the 

 obliquus inferior, adductor and retractor oculi, also in the depressor oculi, 

 one "measle " being placed between the tendon of this last-named muscle 

 and the sclerotic coat. The ball of the eye itself contained no vesicles. A 

 few were remarked in the substance of the genio-hyoideus and other 

 muscles supplying the tongue ; but the lingual organ properly so called 

 appeared to be entirely free. 



