190 MR. F. B. BEDDAttD OX EARTHWORMS [June 4, 



EXPLANATION OF THE PLATES. 



Plate XVI. 



Fig. 1. Skeleton of a small I'denodon, presumably U. gracilis. The parts in 

 outline are from the remains on the counter slab. X Ar. 



Fig. 



Plate XVII. 



2. I'pper view of skull of Udetwdon gracilis. Nat. size. 

 :;. Side view of skull of Udem don gracilis. Nat. size. 



4. Vertebra (probably lower thoracic) of Udenodon bainii. Nat. size. 



5. Posterior view of right hind-limb of Udenodon gracilis. Nat. size. 



6. Inner view of pelvic bones of right side of Udenodon gracilis. Nat. 



size. 



Plate XVIII. 



Fig. 7. Posterior or under side of right arm-bones of Udenodon gracilis. 

 Nat. size. 



8. Right clavicle of Udenodon gracilis. Nat. size. 



9. Sternum of Anomodont — believed to be Udenodon baini. Nat, size. 



10. Bight shoulder-girdle of I'denodon baini. Nat. size. 



11. Bight coracoid awl precoracoid of Udenodon baini, from within. 



Nat. size. 



Reference Letters. 



etc., acetabulum. 



acr., acromion process. 



c, cent rale. 



c.d., deltoid ridge. 



c.e., external condyle. 



cl., clavicle. 



co., coracoid. 



,/., femur. 



Jb., fibula. 



n., anterior nares. 

 na., nasal bone. 

 ol., olecranon process. 

 pb., pubis. 

 ph., phalanges. 

 pi., pisiform. 

 p.co., precoracoid. 

 ra., radiale. 

 rd., radius. 



fl., fibulare. rf., frontal ridge. 



///(., femur. Tf-f., postfrontal ridge. 



fit., precoracoid foramen. 8c., scapula. 



f.ob., obturatur foramen. 8p., neural spine. 



</L, glenoid facet. 

 hu., humerus. 



i., intermedium. 



il., ilium. 



is., ischium. 

 rat., metatarsals. 



(b., tibia. 

 tl., tibiale. 



fr., t ransveree process. 

 /.>•., tarsalia (1 & 4-5). 

 id., ulna. 

 tin., ulnare. 



4. On some Species of Earthworms of the Genus Benhamia 

 from Tropical Africa. By Frank E. Beddard, F.R.S. &c. 



[Received May 20, 1901.] 



(Text-figures 12-19.) 



The genus Benhamia was originally instituted hy Dr. Michaelserj ' 

 and withdrawn from Acanthodrilvs, in which it had been formerly 

 included. Quite recently a the same authority has proposed to drop 

 this generic name, and has placed the species which belong to it in 



•I B. Hamb. wiss. Anst. vi. p. 6. 

 - Oligochaeta in ' Das Tierreich,' 1900, p. .334. 



