CH. I] EARTHWOKMS AND LEECHES 45 



Testcs and seminal funnels in paired vesicles, or in incom- 

 pletely shut up portions of ccelom. More than 2 pairs of 

 spermathecae. 4 pairs of vesiculee seminales in 9th to 12th. 

 Tubercula pubertatis confluent. Gizzard extends through 

 more than 1 segment. 



0. lacteum (Orley), (A. cyanea and A. rubida Rosa). Bluish 

 grey. Prostomium extends \ to f into 1st segment. Setse 

 widely paired to separate. Clitellum from 30th to 35th. 

 Tubercula from 31st to 34th, or with part of 30th and 35th. 

 First dorsal pore between 8th and 9th, or 9th and 10th, or 

 10th and llth. Total segments 100 to 165. Length 40 to 

 100 mm. Thickness 3 to 5 mm. 



. genus Lumbricus L., em. Eisen. Prostomium always extends across 

 1st segment and meets furrow between 1st and 2nd. Setae 

 closely paired. Clitellum saddle-shaped. Tubercula puber- 

 tatis confluent. Testes and seminal funnels in a single 

 unpaired vesicle in 10th and llth. 2 pairs of spermathecse. 

 3 pairs of vesiculse seminales, in 9th, llth and 12th. Gizzard 

 extending through more than 1 segment. 



L. rubellus Hoffinstr. Red-brown to violet dorsally : feebly iridescent. 

 Clitellum from 26th or 27th to 32nd. Tubercula pubertatis 

 from 28th to 30th and sometimes 31st. First dorsal pore 

 between 7th and 8th. Male apertures inconspicuous. Total 

 segments 95 to 150. Length 70 to 150 mm. Thickness 4 to 

 6 mm. 



L. castaneus (Sav.). Chestnut brown to brown-violet dorsally : 

 iridescent. Clitellum from 28th to 33rd. Tubercula puber- 

 tatis from 29th to 32nd. First dorsal pore between 6th and 

 7th. Male aperture rather inconspicuous. Total segments 

 about 90. Length 30 to 50 mm. Thickness 4 mm. 



L. terrestris L. Mull. (L. herculeus, Rosa). Brown-violet dorsally 

 anteriorly with darker mid-dorsal line posteriorly. Hinder 

 end flattened. Setse at extremities larger than in mid-region 

 and not so closely paired. Clitellum from 31st or 32nd to 

 37th. Tubercula from 33rd (or 33rd rarely) to 36th (or 

 J 36 rarely). Male apertures conspicuous. Genital setae 



