
WOMERSLEY—MICROTROMBIDIINAE OF AUSTRALIA AND NEW GUINEA 341 
curved ventrally to give the more or less helmet-like form of the genus Holcotrom- 
bidiwm. The smaller setae are as featured by Berlese, with a number of branch- 
ing granular lobes. Berlese (fig. 82 D-E) shows the specialized comb-like or 
serrate setae found on segments III onwards of the legs. These are the same on 
the specimens from Ceylon and measure 35, long (Berlese does not give the 
length). 



F 

Fig. 30. Holcotrombidium ef. dentipile (Canest). Specimen from Ceylon, A, Crista and 
eyes (X 375); B, palp (X 375); C, front tarsus and metatarsus (X 200); D, larger dorsal seta 
(X 860); E, smaller dorsal seta (x 860) ; F, leg seta (x 860). 
The crista is linear, 200p long, with a posterior sensillary area, and with SB 
30p. apart; the sensillae are filamentous. The palpi are stout, as figured by Ber- 
lese, with strong apical tibial claw, strong accessory claw and two indistinct pec- 
tines on tibia, and on the external side of tibia with 3 strong long spine-like setae. 
Berlese states and figures only one such seta but the number of these external 
spines in some species (e.g. of the genus Camerotrombidium) appears to be variable, 
and consequently while referring the Ceylon material to dentipile it should per- 
haps be considered as a variety. The palpal tarsus is stout, elongate and over- 
reaches tip of tibial claw. The eyes are 2 on each side, prominent and subsessile, 
