ERIC MJÖBERG, ISOPTERA. 101 



Measurements: Length of body with jaws 6,2 mm, 

 length of head with jaws 3,8 mm, length of head without 

 jaws 2,3 mm, breadth of head 1,2 7 mm, length of prothorax 

 0,36 mm, breadth of prothorax 0,8 2 mm, breadth of abdomen 

 1,43 mm. 



This species reminds not a little of M, Krcepelini SiLV., 

 but is larger in size with a small tubercle on each side of 

 the f rontal process and has labrum differently shaped. Only 

 one single soldier found in the side-galleries of Coptotermes 

 lacteus Frogg. near Coleman River in Cape York Peninsula. 



Text Fig. 52. Profile of head of soldier of 

 H. alicensis Mjöb. 



Genus Microcerotermes Wasm. 



Of this genus hitherto three species were known from the 

 Australian continent, M. Turneri Frogg. from Queensland, 

 M. serratus Frogg. from N. Queensland a^d M. distinctus 

 SiLV. from Soutwest Australia. 



My material contains not only the three already described 

 but also two new species, bringing the number of Australian 

 species up to five. In the foUowing I give a key to the 

 soldiers of the species and also a key to the three hitherto 

 known imagines. 



Key 



to the Australian species of the genus Microcerotermes Wasm. 

 hased upon the characters of the soldiers. 



I. Head small, narrow, jaws short. 

 _ A. Jaws stout, head very long, twice as long as broad (see Silvestrt, 

 P 1. c, Fig. 176, Taf. XX). M. distinctus Silv. 



Distribution: W. Australia. 



