MATUTA MACULATA.: 117 



The Museum contains eight specimens (6 cf , 2 9) of this 

 species , which I found in an unlabelled phial together with 

 specimens of Mat. victrix Fabr., var. crebrepunctota , Mat. 

 banksii Miers and Jtfai. /wvaWs Herhst, probably originating 

 from the Japanese collection. 



With regard to its outward appearance, it greatly re- 

 sembles young specimens of Mat. victrix Fabr., but on 

 closer examination it may be easily distinguished. The ca- 

 rapace is distinctly but finely granulated ; antero-lateral 

 margins , with regard to the length of the carapace , com- 

 paratively shorter than those of Mat. victrix Fabr., antero- 

 lateral tubercles as strongly marked as in that species, tu- 

 bercles of the surface and of the postero-lateral margins 

 nearly obsolete. Front rather little emarginate , with the 

 lobes rounded. Lateral marginal spines very long, acute 

 and straight or slightly directed forward. Hand of the 

 male nearly resembling that of Mat. banksii, lower part 

 granular with a granular line composed of round granu- 

 lous depressed tubercles of different size near the inferior 

 margin , the latter armed with some small acute tubercles ; 

 at the base of the described granular line near the articula- 

 tion with the carpus , a small acute tubercle is found in both 

 sexes. Ridge on the outer surface parallel with the inferior 

 margin , provided with five prominences , of which the 

 first , third and fifth are indistinct tubercles , the second 

 and the fourth larger , acute , the second being stronger 

 than the fourth. Mobile finger with a ridge that is very 

 finely striated over the greater part of its length, and ob- 

 scurely beaded towards its distal extremity. Larger stria- 

 ted plate on the inner surface prolonged in the direc- 

 tion of the stripes. Hand of the female having the 

 same form and sculpture as that of the male, in our two 

 specimens the fourth spine on the outer ridge being com- 

 paratively stronger than in the male. Ridge of the mo- 

 bile finger obsolete. 



Our species therefore may be easily distinguished from 

 those in which the outer ridge of the hand of the male 



Notes from the Leyden Museum, Vol. III. 



