115 



Genus Tr'irJi'm, Nob. du flaan. 

 Fauna, Japon. Crust., p. 109. 



Trichia australis, n. sp. 



PI. iii,, Hgs. 1, Irt, \h. 



Body strongly granulate on all parts, with a few groups 

 of long hairs here and there on the less exposed parts. Cara- 

 pace sub-octagonal, as broad as long, strongly embossed, 

 covered with small short hairs interspersed amongst tlie 

 granules, but not obscuring them. Tw'o deep, sinuous, longi- 

 tudinal furrows, commencing behind the orbits, separate the 

 median regions from the lateral. 



The front is prominent, advancing beyond the orbits, 

 rather less than one-fourth the width of the carapace, ante- 

 riorly depressed, divided by a median furrow into two lobes. 

 On a frontal view each lobe is seen to be cut into rather 

 deeply by the anterior margins of the fossettes, these ter- 

 minating rather acutely at both their inner and outer angles. 

 The rather wide median furrow extends backwards, widen- 

 ing and bifurcating behind the protogastric regions, joining 

 the longitudinal furrow^s before mentioned. 



The cardiac region is separated from the gastric by a 

 shallow transverse depression; it is somewhat diamond-shap- 

 ed, the lateral angles being emphasized. 



The intestinal region is less elevated, contracted in front 

 it widens out behind to form a thickened posterior margin. 



The mid-branchial regions are prominent and rounded, 

 each having a prominence on the inner side projecting into 

 the longitudinal furrow, and one on each outer side on the 

 lateral margin. The meta-branchial regions are depressed 

 with strong- marginal tubercles at the external postero-lateral 

 angles of the carapace. 



The hepatic regions are also depressed, very much so 

 anteriorly, the depressions extending to the sub-ocular 

 regions. Above, each has two strong tubercles, the inner 

 ones placed a little in advance of the outer. 



The orbits are nearly circular, three-lobed above, the one 

 at the exterior angle being abruptly declivous to the hepatic 

 region ; the inner lobe is separated from the middle one by 

 a rather wide space, and from the front by a smooth narrow 

 groove. The lower margin has two small lobes, including 

 the internal sub-ocular angle. 



The fossettes are large and oblique nearer the longi- 

 tudinal position. 



The l)asal antennal joint is large and somewhat obliquely 

 wedged in between the inner sub-ocular angle and the in- 

 ferior process of the front ; its outer distal angle reaches the 



