296 DISCOVERY REPORTS 



by/, and drawn with a double line, showing the thickness of its wall. In the peripheral part of the 

 ventral nerve cord there are, moreover, four roots of the parasite. Six other roots are found in the 

 body musculature of the host. 



Fig. Sb does not differ in any important detail from Fig. Sa. The ventral nerve cord contains, besides 

 the anterior part of the organ of fixation, four roots. Numerous roots are present in the body musculature 

 of the host. 



O o Q 



QO 



Fig. 7. Transverse section of the central part of the ventral region of the first abdominal segment of Hoplophoriis grimaldii 

 Coutiere, with Amallocystis umbellatus n.sp., type specimen. Section from the region between those of Fig. 8 g and h. 

 c, cuticle of host ; e f, external part of organ of fixation ;/, organ of fixation ; g, gonomere ; m, musculature of host ; n, ventral 

 nerve cord of host ; r, root ; st, stalks ; t, trophomere. x 34. 



In the section of Fig. 8 c the organ of fixation is much wider. There are a few roots in the ventral 

 nerve cord, some in or against the musculature under the cuticle, and some against another muscle 

 (in the right side of the figure). 



In Fig. 8^ the ventral nerve cord is connected by a strand of tissue to the musculature covering the 

 body wall. The parts of the parasite are not very different from those shown in Fig. 8c. One of the 

 roots, in the peripheral region of the ventral nerve cord, is sectioned more or less longitudinally. 



In the section shown in Fig. 8e the ventral nerve cord is connected to the body wall by a broad mass 

 of tissue. The organ of fixation of the parasite here is already comparatively wide. There are a few 

 roots of large size and a great number of smaller roots. 



