lOf^O 



MR. R. J. OHTLEPJ? OM the! 



length from 20 to 36 mm., with a maximum breadth of 800 /x 

 to 1*24 mm. 



The vulva is slightly protuberant, and its position divides the 

 body into the ratio of i : 1*6. The vagina is long, and varies in 

 length from 2i to 3^ mm. with a thickness of 95 /x. The 

 egg-chamber is elongately oval, and is 1'7 mm. long by 435 ^u 

 in diameter. The common trunk is short, and varies in length 

 from 290 to 320 ^ ; it is slightly thicker than the vagina; from 

 its posterior end the two uteri take their origin, and may 

 either pass forwards and then bend backwards, or else pass 

 posteriorly directly. 



The eggs are oval and thick-shelled, and measure 43 fx long by 

 31 ^ broad. 



Text-fief ure 7. 



Phi/saloptera maxillaris Mol. 

 Caudal extremity of male. 



Male. 



The males are much attenuated from behind forwards, having 

 their maximum thickness just above the bursa; the}^ vaiy in 

 length from 23 to 32 mm., with a thickness of 550 to 800 /i. 



The bursa is elongated and somewhat pointed, and has its 

 caudal expansions well developed in its middle portion. Its 

 ventral surface is ornamented by two types of cuticular bosses, 

 those in the central area, above and below the anus, being 

 rounded, simulating those found in Ph. prceputialis, while those 

 on the lateral areas are in the form of much-broken ridges ; the 

 transition from the one type to the other is gradual. 



