Miscellaneous. 405 



R. lasiotis longer, more appressed (or tending to lie flat on the 

 skin) , of a light greyish-brown colour, and somewhat glistening 

 at certain angles of vision. In R. sumatrensis the muzzle an- 

 terior to the nasal horn is much broader, and the space between 

 the ears is proportionally much less. Moreover Mr. Sclater 

 states that " the tail of the Malacca animal is shorter and 

 nearly naked ; in that from Chittagong it is longer and tufted 

 at the extremity ;" on the contrary, it is conspicuously shorter 

 in R. lasiotis, and even with its tuft does not descend so low 

 as in the other. That oi R. sumatrensis is correctly represented 

 in Mr. Sclater's figure of the species, in which also the very 

 strongly marked crease behind the shoulders is not at all 

 exaggerated. 



MISCELLANEOUS. 



Varieties of the Tiara (Galera barbata). 

 By Dr. J. E. Geay, F.R.S. &c. 



This animal is generally brown, with a pale head and a large white 

 or yellow blotch on tbe throat. It has a large distribution in the 

 tropical or subtropical parts of America. 



The British Museum has lately received two half-grown specimens, 

 which have the whole head, neck, and front of back between the 

 shoulders pure white ; one of the specimens has the chin and middle 

 of the throat grey. These come from Xalapa in Mexico. 



Mr. Salvin sent to the Museum a specimen from Costa Rica, which 

 is entirely black, without any pale colour on the head and neck ; and 

 there is a young specimen in the Museum which is entirely of a pale 

 whity-brown colour. 



On Branchipus and Artemia. By C. Vogt. 



At the meeting of the " Societe Helvetique des Sciences Naturelles " 

 held at Fribourg in August last, M. Vogt gave a summary of the 

 results of his researches upon these genera. The first species in- 

 vestigated by him was BrancJiij^ns diuphanus, found in August 1871 

 near the summit of the Eeculet (Jura), in artificial ponds dug by the 

 herdsmen for the use of their cattle. M. Vogt obtained several 

 hundred individuals of this species, among which the males and 

 females were nearly in equal numbers. When placed in an aqua- 

 rium they Hved there very well at first, and produced a multitude of 

 eggs, from which larvae issued ; but towards the end of September 

 they all perished by degrees. At the approach of cold weather the 

 water was emptied out of the aquarium, leaving only the mud 

 at the bottom, which was completely frozen during the winter. 

 Towards the end of February the aquarium received some new 

 inhabitants, namely about 50 larvae of Petromyzon, which concealed 

 themselves in the mud. In the month of May of the present year a 

 certain number of larvae of Branchipus made their appearance, being 

 hatched, no doubt, from eggs which had remained in the mud. 

 M. Vogt succeeded in rearing several generations of them, which 

 enabled him to follow all the phases of their development. Several 



