
WoOMERSLEY—MICROTROMBIDIINAE OF AUSTRALIA AND NEW GUINEA 329 
CAMEROTROMBIDIUM COLLINUM. (Hirst, 1928). 
Micratrambidium (Enemothrombium) collinum Hirst, 1928. Ann, Mag. Nat. 
Hist. (10), 1, 565; Womersley, 1934. Ree. 8. Aust. Mus. 5, (2), 195. 
Camerotrombidium collinum Sig Thor, 1936, Zool, Anz., 114, 31; Womersley, 1937. 
Ree. 5. Aust. Mus., 6 (1), 92. 
Fig. 21 A-F. 
Redeseription. Colour red. Shape as in C, simile Hirst, with a distinet pos- 
teriorly convex suleus between propodosoma and hysterosoma, Length 1-31 
mm., width across shoulders 0:85 mm. Crista linear, fairly stout, 320, long, 
anteriorly tapering, with subposterior sensillary area at about 34 from apex, 

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Fig. 21. Camerotrombidium collinwm (Hirst). A, Crista and eyes (X 170); B, palp 
(X 200); 0, front tarsus and metatarsus (X 125); D, larger dorsal seta (> 860); B, smuller 
florsal setae (>< 860); F, seta from edge of propodosoma and venter ( % 860). 
sensillae bases 36 apart, sensillae ! Eyes 2+2, on well defined ocular shields, 
sessile, posterior eyes the smaller, Legs all shorter than body, T 1300n, IT 820, 
II ?, LV 1300,, tarsi 1 elongate, 828 long by 90. high = 3-6 ratio, metatarsus 
1218p long, ratio length of tarsus to metatarsus = 1-5. Palpi (Fig. 21 B) stout, 
with stout tibial claw and smaller but stout accessory claw, two pectines and on 
external sides with a single stont spine arising near base of palpal tarsus; palpal 
tarsus elongate and slightly clavate, 
Clothing dorsally of two kinds, the larger somewhat globose, septate, ciliated 
and with an oral whorl (Fig, 21 D), length to 32, smaller setae rather stout, 
18-20. long, slightly swollen apically with an oral opening seen ventrally, and 
furnished with strong spicules (Fig. 21 E) ; on the propodosgoma the latter setae 
