78 [August, 



pouch on each side of the head, opening externally on the cheeks. Both hind 



and fore feet with four toes and the rudiment of a fifth. The hind legs very 



long and strong. Tail very long, slender, covered with hair, and ending in a 



pencillated tuft. 



Length 10| inches, including the tail, which is 6| inches. 



^ , _ (2 incisors, 



m xi I 10 upper ' „ 

 T^ . , c ,. ieeth, 1 ) 8 molars. 



Dental System, „„ < ', . . 



•^ 20 j ,„ , 2 incisors. 



f 10 lower ^ , 



) 8 molars. 



In the upper jaw the incisors are divided by a longitudinal furrow. 



This beautiful Jerboa-like animal is an abundant inhabitant of the vineyards 

 and cultivated fields of the Pueblo de los Angeles, Upper California. 



Like the other pouched animals, it forms extensive burrows, traversing the 

 fields in different directions, and are only dislodged during the process of irriga- 

 tion. They leap with surprising agility, sometimes the distance often feet or 

 more at a spring, and are difficult to capture. 



ATus * Calif ornicas. 



Dark grey; lighter about the head and shoulders; above tinged with light 

 brown; on the sides almost fulvous. Beneath almost white. Fore feet with 

 four toes and the rudiment of a fifth. Hind feet with five toes. Tail nearly 

 five inches in length, pretty thickly covered with short rigid hairs. Head acutely 

 conical ; ears large, rounded, thin, sparsely hairy ; one inch in length, and 5-8ths 

 in breadth. Length of the body 4^ inches. Old male, — bristles, of the nose 2| 

 inches. 



I captured but a single specimen of this species in a field near Monterey, 

 Upper California, which, with those of the former, I had the misfortune to lose. 



The Committee to whom was referred the duty of preparing a cor- 

 rected list of Members and Correspondents, presented a report, which 

 was adopted, and two hundred and fifty copies of the list ordered in 

 ^to. form. The following committee was appointed to superintend the 

 publication of the same : Drs. Zantzinger, Griffith, and Bridges. 



ELECTION. 



Alexander Biddle, Esq., of Philadelphia, was elected a Member, and 

 the following were elected Correspondents : — 

 Hugh E. Strickland, Esq., of London. 

 Edward Blyth, Esq., of Calcutta. 

 Francis S. Holmes, Esq., of Charleston, S. C. 

 Theodore Cantor, M. D.. of the Bengal Medical Service. 



