288 Mr. H. A. B-iylis on some 



Seurat*. The ovejector itself measures 065 mm. from the 

 vulva in a forward direction, ending anteriorly in an oval 

 chamber into which the vagina opens dorsally by a narrow 

 canal with thick walls. At a point 0'95 mm. from the vulva 

 the vagina bends back upon itself towards the posterior end. 

 The precise course of the uteri has not been traced, but, they 

 appear to run back nearly as far as the anus, and then turn 

 forward again, the most anterior coils extending to within 

 1*6 mm. of the oesophageal bulb. The ova contain coiled 

 embryos, and measure 75/ttx 62'5/i. 



3. Thelazia depressa, sp. n. (Figs. 5-7.) 



Host: (?) Mungos [Crossarclius] fasciatus. 

 Locality, (?) Morogoro. 



In the same tube with the numerous specimens of Subulura 

 just described there occurred a pair, male and female, of a 



Fig. 5. 



sm g. 



Thelazia dep>ewa. Head of female; lateral view. 



I p., lateral papilla; m.c, wall of mouth-capsule ; s.m.p., submedian 



papilla. 



form which appears to belong to the genus Thelazia. The 

 usual habitat of the worms of this genus is the orbital region 

 of birds and, more rarely, of mammals. It is possible that 



* 0. R. Soc. Biol. Paris, ii. (1914) p. 154, figs. 2, 4. 



