890 TWO NEW SPECIES OF MACROPUS, 



water on the "Western South American coast in about the same 

 latitude (Valparaiso) (4-), which on the other hand is, on account 

 of the cold Peruvian current, lower than on the Eastern Coast of 

 South America, in the Atlantic Ocean, where (in the latitude of 

 42° and 43° south) the temperature of the sea water on the 

 surface varies between 14° and 14° 5 C (5). 



My fragmentary observations of sea temperature prove also, 

 that during the winter months, the sea water in comparatively 

 shallow bays in Port Jackson (in Darling Harbour the depth is 

 from 3 to 5i fathom) is much colder than the water of the ocean. 

 It is very likely that in the hot summer months the reverse is the 

 rule, i.e., that the water of the ocean is colder than the water in 

 the Bay. 



ON TWO NEW SPECIES OF MACROPUS FROM THE 

 SOUTH COAST OF NEW-GUINEA. 



(Plate XXXIX.) 



By N. de Miklouho-Maclay. 



Amongst the collection of Mammals from New Guinea in the 

 Macleay Museum, two undescribed species of Kangaroo attracted 

 my attention. Through the well-known kindness of Mr. W. Macleay, 

 I had the opportunity of examining the specimens sufficiently to 

 enable me to bring the following remarks and descri[ttion before 

 this Society. 



Both wei-e remarkably alike in the general proportions of the 

 body and the colour of the fur. One was smaller than the other, 

 which difference however, I accounted for its being a female. But 

 the closer inspection of its incisors (Fig. 5 and Fig. 8), presented 



(4). I found the temperature of the sea water on the surface in the 

 harbour of Valparaiso (in May, 1S71) to vary fi'om 12° and 12° 5 C. 



(5). Vide : my letter on the way to New Guinea in 1871, published in 

 the "Iswestija" of the Imp. Russ. Geograph. Soc. of St. Petersburg, 



