On new Species of Fossorial Hymenoptera. 253 



with the head of C. lasiotis of Dr. Sclater in being broader in 

 the parietal regions. 



That is to say, Mr. Garrod has found that Sir Stamford 

 Raffles's specimens from Sumatra, on which R. sumatrensis is 

 founded, differ from the skull of the animal that the Secretary 

 to the Zoological Society has called R. sumatrensis by the very 

 characters that he himself represents as occurring in the heads 

 of his R. smnatrensis and R. lasiotis. 



Dr. Anderson, in the '■ Proceedings of the Zoological So- 

 ciety,' 1872, p. 129, describes a female rhinoceros from Chit- 

 tagong, which he names Rhinoceros sumatrensis, Cuvier, as 

 " ashy grey," and covered with bristles about an inch in length, 

 and long drooping hair on the margin of the ears. The speci- 

 men described by Dr. Anderson was purchased by the Zoolo- 

 gical Society, and is noticed and figured by the Secretary 

 under the name of Rhinoceros lasiotis (P. Z. S. 1872, p. 493, 

 t. xxiii.). The animal is represented on this plate, I am in- 

 formed, far darker than it is in nature ; and in pp. 791 & 792 

 the ear and crown and side of the head of this animal are 

 figured to show its distinctness from the black rhinoceros, 

 which the Secretary erroneously calls R. sumatrensis, over- 

 looking the fact that Mr. Bell, who originally described the 

 Sumatran rhinoceros, especially says the male is " brownish 

 ash," and " the female more of a lead-colour." 



The hairy fringe on the ears is common to both species ; 

 and I am told that the length of the fringe differs at different 

 periods, and often is not of the same length on the left and 

 right ears. 



I think all this proves that the Secretary to the Society has 

 renamed the Sumatran rhinoceros described by Bell, KafHes, 

 and Cuvier, and has applied Cuvier's name to a new species, 

 which I have called, from its very decided difference in colour, 

 Ceratorhinus niger. 



XXXIV. — Descriptions of new Species of Fossorial Hymeno- 

 ptera in the Collection of the British Museum, and of a 

 Species of the rare Genus Iswara helonging to the Family 

 Dorylidse. By Frederick Smith, Assistant in the Zoolo- 

 gical Department of the British Museum. 



Family Dorylidae. 

 Genus Iswaka, Wcstw. 

 Isinrra fasciafa. 

 Male. Length 6 linos. Black, variegated with yellow and 

 Ann. & Mag. ^N. Hist. Sor.4. fW. xii. ' 18 



