78 



Scyll. Haanii Berthold is a beautifully coloured species. The ground-colour of carapace 

 and antennae is a yellowish olive-green, the tubercles and prominences are white, the hairs 

 with which they are fringed, brown; the abdomen is of pale ground-colour, but the i st tergum 

 is marked (PI. II, fig. \oa) on each side, near the pleura, with a large round, win e -red 

 fleck and with a few smaller ones on the posterior margin; the 2 nd and especially the 3 rd tergum 

 are also wine-red coloured. 



Dr. Ortmann refers (locis citatis) some specimens from an unknown or uncertain locality 

 also to Scyll. Haanii. The propodi of the 2 nd and 3 ld thoracic legs were also compressed, with 

 sharp upper and lower margins, the lower not prolonged distally, the outer margin of the 

 proximal antennal squame was, however, armed only with on e single tooth and the upper 

 surface of the carapace presented also only one tooth. Ortmann's species is therefore probably 

 different from that of Berthold. 



According to the same author Scyll. sordidus (Stimps.) from Hongkong should be identical 

 with Scyll. Haanii Berthold. This opinion, however, is quite erroneous, for not only Berthold's 

 species, but also Scyll. Haanii of Ortmann are certainly different from Scyll. sordidus (Stimps.). 

 Scyll. sordidus (Stimps.) difters at first sight by the following characters. The carapace is armed 

 with three teeth in the mid-dorsal line, one observes namely a third strong tooth immediately 

 behind the cervical groove. The anterior extremi t y of the sternum is not truncate, but deeply 

 notched by a triangular incision. The posterior tooth on the outer margin of the proximal 

 antennal squame is rudimentary. The lobes or cusps into which the free margin of the 

 distal squame is cut, are rounded, obtuse. The thoracic legs show a quite different 

 shape, so e. g. are the propodi of the 2 nd pair slender, not compressed, nor furrowed, and 

 tapering distally, while the dactyli are almost as long as the propodi. The barely compressed 

 propodi of the 3 rd pair are 4-times as long as broad and are also not furrowed, those of the 

 following legs are shorter, less slender. The colouration, finally, is quite different, Scyll. sordidus 

 presenting a large, transverse, o val black fleck on the middle of the i sl abdominal 

 tergum, a character described also by Stimpson. 



General distribution: China (Berthold). 



4. Scyllar7is sordidus (Stimpson). (PI. II, Fig. 11, na). 



Arctus sordidus W. Stimpson, in: Proc. Acad. Nat. Sc. Philadelphia, January 1860, p. 23. 

 Arctits sordidus J. G. de Man, in: Zoolog. Jahrb. Abth. f. Syst. T. IX, 1896, p. 497, PI. 34, 



fig. 58 and 58«. 

 Scydarus sordidus G. Nobili, in: Bollet. Mus. Torino, Vol. XVIII, N° 455, 1903, p. 12. 

 Arctus vitiensis A. Ortmann, in: Zoolog. Jahrb. Abth. f. Syst. X, 1897, p. 270 (nee Dana). 

 Nee: Arctus sordidus C. Spence Bate, Report Challenger Macrura, 1888, p. 66, PI. IX, fig. 3. 



Stat. 162. August 18. Between Loslos and Broken-islands, West coast of Salawatti. 18 m. 



Bottom : coarse and fine sand with clay and shells. 1 male and 2 females 



without eggs. 

 Stat. 273. Dec. 23/26. Anchorage off Pulu jedan, East coast of Aru Islands (Pearl Banks). 



13 m. Bottom: sand and shells. 1 young male. 



