

338 : RECORDS OF THE S.A. MUSEUM 
Ho.corroMBIDIUM SECURIGERUM (Canest. ) 
Ottonia securigera Canest., 1897. Termes. Fuzet, 463; idem 1898 Atti Soc. 
Veneto-Trentino, 391, pl. 22, fig. 2. 
Microtrombidium (Enemothrombium) securigerwm Berl., 1912, Redia, 8 (1), 201. 
Fig. 27 A-I. 
Redeseription. Colour in life red. Shape oval with moderately prominent 
rounded shoulders. Length to 1-5 mm., width to 0:975 mm. Crista linear, 252y, 
with subposterior sensillary area at about % from apex, sensillae ca. 180, long, 
filamentous and apparently nude, sensillae bases 40 apart. Eyes 2+-2, sessile, on 
well developed ocular shields, in advance of sensillary area, posterior the smaller. 
Palpi as figured, moderately stout, tibia with stout apical and smaller accessory claw, 
my 

Fig. 28. Holcotrombidiwm cygnus (Wom.). A, Crista and eyes (X 200); B, palp (X 200) ; 
C, front tarsus and metatarsus (X 200); D and E, dorsal, lateral and ventral views of dorsal 
setae (X 860); F, leg seta (x 860). 
two pectines and a short stout external spine arising near base of apical claw, tar- 
sus elongate, reaching tip of claw; legs all shorter than body, I 1350p, IT 750p, II 
750p, IV 975; tarsus I elongate, 252. long by 144p high, ratio length to height = 
1-75, metatarsus I 180» long, ratio of length tarsus to metatarsus — 1:4. Dorsal 
setae of two kinds, the larger appearing dorsally as large ovoid, ciliated, decumbent 
scales, to 30u long, on edge of body in lateral view appearing somewhat hatchet- 
shaped, actually, as can be seen from a ventral view, they are really scales in which 
the sides are turned down to form a cavity like a helmet (ef. fig. 27 D.E.F.) ; smaller 
setae 14 in diam., globose with strong denticles (cf. fig. 27 G.H.). The legs are 
thickly clothed with more lanceolate ciliated setae, 30% long, but still showing the 
recurved lateral margins (ef. fig. 27 L). 
Loc. Two specimens from soil, Dobodura area, New Guinea, 3rd May, 1944 
(G. M. Kohls). 
Remarks. In spite of Canestrini’s brief description of this species from Finsch- 
hafen, there seems little doubt but that the above two specimens are the same. Of 
