46G On a new Species of Lagidimn. 



Type, 6 (87. 12. 1. 60 in British Museum). Measure- 

 ments taken from skin : — Head and body 180 milliin. ; tail 

 175 ; liind foot 40 ; ear 2o ; heel to front of last foot-pad 20 ; 

 iitth toe to lialf first plial. of fourth; first toe short, mt 

 reaciiing to base of second. Foot-pads 5, between bases of 

 second and third toes, between bases of third and fourth, at 

 base of fifth, at base of first, and one about its own length 

 posterior to that at base of first. 



Loc. Tingassi, Mombuttu. 



A female shows the mamnire 1 — 2 = 0. 



8kull (broken): length to lambda .55"0 millim.; breadth 18 ; 

 breadth of brain-case 16o ; constr. 7 ; nasals l(r5 x '^'^ ; hens, 

 to back of pal. 18'4 ; pal. for. 6-H x 3 ; "^ 6 ; diast. 12-3 ; out- 

 side ""• ^ 7"8, inside 4"5 , mandible, length (bone only) 21^ 

 height 12. 



In comparison with M. longipes the skull is larger, as also 

 the length and breadth of the molars ; the brain-case broailer 

 and more rounded ; the angle of juncture of fronto-parietal 

 suture more obtuse ; and in the mandible the greater length 

 of the coronoid is evident. This is now the third known 

 species in this genus, and is larger than J/. lon;jipes^ M.-Edw., 

 from theGaboon and Cameroons, or the more brightly coloured 

 graceful form M. Edwardsi\ Rochcb., from Liberia. 



XLV. — On a new Species ('/"Lagidium from ihe I\a<ferii 

 Coast of Patagonia. By Olofiem) Thomas. 



The genus Lagidium has not hitheito been known to occur 

 away trom tlie chain of the Andes, and it has therefore been 

 with much interest that I have examined an example of this 

 genus obtained in the hills near Chiibut, p]-»st<M-n Patagonia. 

 By the kindness of Dr. ^loreno, of the La Phita Museum, 

 the specimen has been acquired by the British Mu-ieum. 



On the whole, considering its geographical isolation, the 

 Chubut Lagidiiim is surprisingly like the Andean forms, 

 those from the southern end of the Andean chain being natu- 

 rally most nearly allied to it, while the more northern ones, 

 sucii as L. pttuaititnt and />. pai/ipes, are considerably more 

 distinct. 



Though like, however, it cannot be assigned to any 

 described specie^, and 1 would theretore propose to name ir, 

 in honour of the di.-tinguished Director of the La Plata 

 i^Iuseum, 



