
298 RECORDS OF THE S.A, MUSEUM 
the entire dorsal surface and an enlarged dorsal seta. Vitzthum (Trenhia, 1926, 
8, 186-7, fig. 80 and 81) described an adult from Buitenzorg and gave figures und 
detailed measurements of the palpal tibia and front tarsus and metatarsus, 
The present species differs from the genotype m (1) the presence of a distinet 
necessory palpal elaw, (2) the much greater height of the front tarsus as compared 
with the length, and (3) the different form of the dorsal setae, which are of two 
sizes, 25-30» and to 64p as compared with uniform, 20-30), long in macropodum, 
Genus EcuinotiromsrM Womersley, 1937. 
Ree. 5. Aust. Mus, 6 (1), 89. 
Monriquia Boshell and Kerr, 1942 (im part), Rev. Acad. Columb. Ci. Ex., 5, 110- 
127, 
Mierotrombidinm Boshell and Kerr hid. (in part). 
This genus was raisect in 19387 for those species of Méerotrombidium sl. in 
whieh the longer of the dorsal setae are stiff and spine-like with or without short 
eiliations or serrations. The type designated was Ottomm spinosa Canestrini, 
1877, and other species were M. echidninum Hirst, 1981 (= victoriense Wom., 
1934). M. spinatum Wom., 1954, M. hystricinwm Canest., 1889, M, dinersipile 
Canest., 1889, M. southeotti Wom,, 1934, and M. willwngae Mirst, 1991, 
Of these species, southcotti has the smaller dorsal setae spathulate with 
fine ciliations, all the other species having these smaller setae of the pennate type 
or stiff with long cilations. Ofher species with the spathulate type of microsetae 
are herewith deseribed, and together with southcotti separated off as a new genus 
Spalhulathrombium. 
The genus Echinothrombiwm may be diagnosed as follows - 
As in Micratrambidiwm but with two kinds and lengths of dorsal setae, 
one short and pennate, or stiff with vather long eciliations; the other long, 
stiff and spine-like with acute apex and with short cillations, indistinct ser- 
rations or quite smooth. Eyes 2-+2. on ocular shields. Apex of propodosoma 
sinnate, frequently in well chitinized specimens with a transyerse ill-defined 
plate adjoining tip of eriste, Crista linear with subposterior sensillary 
area with paired filamentons sensillae, Palpi stout, tibia as in subfamily, 
with a single spine on external surface, Body shape elliptical with only mode. 
rately pronounced shoulders, Legs T and TV not or not much longer than 
body. 
Ecrinoraromeium scumnium (Plirst, 1981), 
Mitevotrombidium echidninum VWirst, 1931, P.Z.8,, 461; Womersley, 1937, Rev. 
§. Aust, Mis., 6 (1), 90. 
M. (Enemothrombium) victorionse Womersley, 1934, Ree, S, Aust. Mus., 4 (2). 
19h, 
Rehinathrombiam echidninum, Womersley, 1987. Rec. S. Aust. Mus. 6 (1), 90, 
Fig, 2 A-E. 
Redeseription, Colour in life uniformly ved. Body oval, broudest across 
jhe shoulders. Length 2-6 to 3-0 mm., width 1-2 to 1°45 min, Tegs T 2250 
Jong, 11 1725, ITT 16502, TV 2500; tarsus T 270 high by 680, long, metatarsus 
T 465, long, for specimen of 8-0 mm. in length, Byes 24-2, sessile. Crista aa 
fixured, 644, long with sensillary area at about 34 from anterior end; sensillac 
bases G1p apart with sensillae ca. 1504 long and apparently nude. Mandibles with 
inner margin of chelicerae finely serrate. Palpi as in generic diagnosis, tarsus not 
