292 SIPHONAPTEEA. 



9 . The sinus of the seventh sternite (fig. 7, vii. st.) 

 larger than in St. robinsoni 9 , more triangular, the ventral 

 margin of the upper lobe more slanting. 



Head of receptaculum seminis narrower than in St. rohinsoni, 

 but as the organ varies in St. robinsoni, the difference can 

 hardly be expected to hold good. 



Length cf 2.4 mm., 9 3.4 mm. 



One pair from Mt. Duht, off Sciurus brookei. 



