S52 



THE ANATOMY OF INVERTEBRATED ANIMALS. 



Fig. 9S. — Longitudinal and vertical section of a female Cockroach (Blatta).—i to xx 

 somites of the body ; 1 to 11, somites of the abdomen ; A, antenna ; lb, labruni 

 «. mouth ; 6, oesopliaj^ue ; c, crop ; d, proventricnlus ; e, pyloric caeca ; /, chylilic 

 ventricle ; {/, insertion of the Malpij^hian caeca ; h, iniestme ; i, rectum ; v, vulva 

 I, salivary L'land ; k, salivary receptacle. By an error, the duct is made to termi 

 nate above instead ot beneath the lingua. //, posiliou of heart ; ?n, cerebral gan 

 glia ; ^V, thoracic ganglia ; x, cerci. 



lingua^ or hypoiyharijnx^h^hhvA. The oesophagus, beginning 

 as a narrow tube, passes between the anterior crura of the 

 tentorium, and then, leaving the head bj the occipital foramen 



Fio. 99.— Loncitttdinal and vertical section of the abdomen of a male Cockroach 

 (Fi/afta). — 1. 2. 3. 4, etc., terj^a and sterna of the abdomen ; t, mushrooin-shaped 

 glajid ; V, aperture of the vas deferens ; A, anus. 



and traversing the neck and thorax, graduallv widens into 

 the large crop or iJir/hwies (Fig. 98, c), which lies in the ab- 

 domen. This is followed by tlie small thick-walled proven- 

 trlcidus (Fig. 98, d)^ shaped like a pear, with its broad end 

 applied against the crop. The narrow end of tlie proventricu- 

 lus opens into a wide canal, the so-called chyllfic ventricle or 



