IV.—Studies of Tetriginae (Acrydiinae) from 
the Sarawak Museum, Borneo. By Dr. 
J. L. Hancock. 
The specimens of Bornean Tettigids treated in the 
present paper were sent to me for determination by Mr. 
J. C. Moulton, Curator of the Sarawak Museum. The 
total number of specimens submitted is one hundred and 
seventy-one, representing thirty-four species, a number of 
which are new and very interesting forms. 
Genus Tripetalocera, Westwood. 
Westwood, Zool. Journ. v. p. 444, 1838; Bol. Ann. Soc. 
Ent. Belg. xxxi. p. 810, 1887 ; Hanc. Gen. Ins. Orthopt., 
Acrid. Tetr. p. 4, 1906. 
T. ferruginea, Westw. 
Westw. p. 444, pi. 22, fig. 3, 1834; Acridium ( Tetrix ) 
ferrugineum of Be Hann p. 168, 1842 ; Ac. 
Locality,* Matang Bd., June, 1910; Pampal, May, 1899. 
Two examples from Sarawak Museum. 
Genus Discotettix, Costa. 
Costa, Ann. Mus. Zool. Nap. ii. p. 59, 1864; Bol. Ann. 
Soc. Ent. Belg. xxxi. p. 806, 1887; Hanc. Gen. Ins. 
Orthopt., Acrid. Tetr. p. 6, 1906; Mnesarchus of Stal 1877. 
Z). belzebuth , Serv. 
Ins. Orthopt. p. 759, 1839 ; &c. 
Locality, Limbang, April, 1910 ; Matang Ed., Nov. 1, 
1911; Lundu, Oct. 1909; numerous larvae in different 
stages from Kuching, Sadong, and Matang. 
D. slielfordi , Hanc. 
Hancock, Trans. Ent. Soc. Lond. p. 214, 1907. 
Locality, ML Penrissen, May, 1909; Kuching, June, 
Aug. and Nov. 1899 ; Malinau, near Mt. Molu, Nov. 21, 
1910. 
Five examples from the Sarawak Museum. 
* All localities are in Sarawak, North-west Borneo. 
Bar. Mus. Journ., No. 8,1913. 
