On S. American LepoiiJae. 200 



tliat its relationship with tlie Anthicid genus Tomoderus is at 

 least equally close. From Tomoderus, Tricliananca differs 

 in tiie peculiar formation of its anterior tarsi and in its more 

 slender antennse, the individual joints of which are all con- 

 siderably elongate. I cannot accept Blackburn's statement 

 that " the relation between the head and the protliorax is 

 quite as in Techmessa^^ (CEdemeridse). In that genus the 

 head is not constricted behind, but fits directly into the 

 prothorax, whereas in Trichananca the head is siiarply con- 

 stricted behind, forming a very distinct neck, which, however, 

 is to a great extent sunk in the protliorax. The relation 

 between the head and prothorax in Trichananca is remarkably 

 similar to that in Tomoderus compresstcollis, Motsch. This 

 character was correctly recognized by Lea in his description 

 ot Lemodes corticalis. 



XVIII. — Notes on S. American Leporidae. 

 By Oldfield Thomas. 



(Published by permissiou of the Trustees of the British Museum.) 



(1) The Small " Tapeti " of Rio Janeiro. 



In common with other author?, I have hitherto taken the 

 small liio Janeiro hare as being Linne's Lepus hras'diensis, 

 pending the identification of an exact locality for the 

 latter. 



Now, however, that, in the course of my studies on the 

 ' Systema Naturse,^ Pernarabuco has been fixed as the type 

 locality of L. hrasiliensis *, a renewed examination of the 

 Eastern Brazilian hares is needed. 



Among the several series of hares obtained by A. Robert 

 in Brazil is a set of nine specimens from Lamarrio, Baliia, a 

 locality on the railway that runs north-westwards from the 

 town of Bahia, and therefore not so very far from Pernam- 

 buco. For the moment, therefore, these may be treated as 

 true L. brasiliensis. 



This animal, while slightly smaller than my '^ L.mmensis" 

 from the Rio Joidao, is undoubtedly of the same group 

 (skull about 70 mm. in total length), and I am now of 

 opinion that the forms which have been termed minensis 



* P. Z. S. 1911, p. 146. Pallas's Lepus tapeti, being equally based on 

 Mai-cgprave's Tapeti, is an absolute synonym of 6". brasiliensis. 



