292 



Mr. H. A. Baylis ow some 



5. Oochoristica crassiceps, sp. n. 

 Host : Psammophis suhtceniatus. 



(Figs. 8 and 9.) 



Locality. Mombasa. 



Tlie niatei-ial consists of two specimens. The larger of 

 tliese measures about 3 cm. in length. Portions of the 

 smaller individual have been used for the preparation of 

 sections, but it is impossible at present to give a very comi)lete 

 account of the anatomy. 



External Features. 



The scolex (fig. 8) measures l'0-l"l mm. in width. A 

 rudimentary rostellum is present, measuring 0"5 mm. in 



Tm. 8. 



Oochoristica crassiceps. The scolex. 



transverse diameter. The suckers, of which two are situated 

 on the dorsal and two on the ventral surface, are sunk into 

 the substance of the scolex, and their apertures are anterior. 

 Iheir outside measurements are 0*3 mm. antero-posteriorly 

 and 0*25 mm. transversely. The strobila is widest towards 

 the anterior end, where it attains a maximum width of 

 1*3 nnii. Posteriorly it tapers gradually down to 0'65 mm. 

 in the last segment. 



