On the Worms of the Genus Perlcliaeta. 207 



nant with the name Pacasse written underneath it *. Judging 

 from the general appearance of the painting, it represents a 

 young anmial, although the horns are already about as long as 

 the head ; they are of a darkish colour, with something like 

 ridges passmg transversely, commencing on the sides of the 

 frontal ridge, turned down and outwards, with the points slightly 

 upturned ; the head is short, thick, abrupt at the nose : the 

 forehead white; the eyes large and full, dark, with a crimson 

 canthus ; the neck maned with a dense and rough mane ; the 

 tail descending below the hough, entirely covered with dark 

 long hair, appearing woolly; and the legs high and clumsy; 

 but the most remarkable character appears to consist in pen- 

 dulous ears" (arrant domesticity!) "nearly as long as the 



Av ?^5 "^^^® ^^^ *^^^ ^^® ^^^^ 5 *^® ^^^^^ neck, body, 

 and hmbs dark brown, excepting the pastern joints, which are 

 white (again domesticity !) . " This figure cannot be referred 

 to a known species, and it is sufficiently curious to merit an 

 engraving. If it should appear to be a different animal from 

 Facasse, it may still represent a new species of buffalo "(') 



or, perhaps, of CatoUepas, or of Ovisy 



The last conjecture is indubitably the right one. Unques- 

 tionably, as it appears to me, the figure represents a very extra- 

 ordinary form of domestic sheep, of which, moreover, other races 

 are represented m the same collection of drawings. Might not 

 by the way, the strange-looking sheep of intertropical western 

 Africa succeed as well as goats in the Indo-Chinese and Ma- 

 layan countries, where the attempt to maintain the European 

 and Asiatic races of tame sheep is altogether hopeless ? 



XXV. — On the Organization of the Worms of the Genus 

 Perichgeta. By Edmond PEERiEEf. 

 By the kindness of M. Houllet, chief of the conservatory 

 department of the Museum of Natural History, who has been 

 good enough to collect them in the soil accompanying plants 

 sent to him, I have been enabled to investigate some living 

 worms belonging to the genus Perichceta, some of them coming 

 from the West Indies, others from Calcutta. 



The group of terricolous Lumbricine Annelids being but 

 little known anatomically, I hope to be able to continue this 

 investigation upon the other worms which may reach me by 



* The notes are written by three hands, the Prince's, Marcgrave's, and 

 i°m "^eheve that in this instance the name is written by the first 



T t ^o?°fS?^ ^y ^' ^- ^^^^'''' ^-L-S-' fj-oi^ tlie 'Comptes Rendus,' 

 July 24, 1871, tome Ixxiii. pp. 277-280. 



