TERMITES FROM THE AUSTRALIAX REGION. 
Soldier. 
Measurements . — mm. 
Total leiifrth . . . . . . . . 5 '10-5 '2.5 
Head, with mandibles, loner .. .. .. 2 '45-2 62 
wide .. .. .. .. O' 96 
deep .. .. .. .. 0-79-CI-85 
Mandibles, from external articulation, long . . O' 79-0 -So 
Antennae, long . . . . . . . . 1 • .33 
Tibia iii, long . . . . . . . . 0'74 
For other details, see description and figures by .Silvestri. 
Locality . — South Australia ; AVesteni Australia : Merriden. 
Described from a small colony from the South Australian Museum 
collection. The identification is based upon the original description 
and figures of the soldier and worker castes, and on a comparison of 
workers with co-types. The latter, however, are of little value for 
specific diagnosis of closely allied species. The measurements of 
soldiers differ slightly from those given by Silvestri (" Long. corp. 
mm. 5'.o. long, capitis 2‘0, lat. capitis O’ 98. altitudo capitis O’ 87 
long, antennarum 1’32, mandibularum 0’97. tibia iii 0’84 '■). but as 
there is complete agreement in all other respects it has been deemed 
advisable to refer the South Au.strahan specimens to this species 
pending an examination of imagos from the. type locality (Coolgardie. 
M e.steni Au.stralia). Styli appear to be ivanting in all the specimens 
examined by the MTiter. A small nest series of soldiers and workers 
collected at Merriden, M estein Australia, by Mr. L. -J. Xewnian are 
doubtle.ss correctly refen-ed to this species', although the measure- 
ments of the soldiers differ slightly from the above. The soldiers 
described by Silvestri and those in the South Australian series 
appear to have a short and wide labruin and there is no visible 
anteclypeiis ; one of the 41erriden specimens has a still more retracted 
labnim. but in the remainder of the series the labruin appears to be 
much hniger and a little iiarroiver and the anteclypeiis is ven* evident 
4 he difference in the degree of retraction of these organs and the 
\ ariation in the .size and colour of the head of soldiers from different 
colonies are apt to be misleading. 
Mea.siirements of soldiers from Merriden. AA esterii Australia. — 
mm. 
Total length .. .. .. -5 ’00-5 ’40 
Head, with mandibles, long . . . . 2 ’50-2 ’80 
” .. .. 0’ 85-0 ’90 
>’ ■■ ■■ .. .. 0’74-0’80 
Antennae, long .. .. 1’4’^ 
Mandibles from external articulation, long . 0’85 
Tibia iii, long .. .. _ _ ® g.0g 
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