4 ZOOLOGY OF THE VOYAGE OE H.M.S. SAMAEANG. 



setis, ex ordine dispositis ; bracliio trigono ; carpo supra convexo et extrorsum curvato ; manu extra con- 

 vexa, intra concava, introrsum curvata, supra et infra obtusa; unguibus introrsuin inclinatis, deorsum 

 curvatis, longioribus, compressis, margine inferiore ad basin sinuato; marginibus utrisque minutim denticulatis; 

 uno majore dente ad utriusque basin. 



Primo pari pedum posteriorum admodum gracili et elongato, quintuplo et dimidio thorace longiore ; 

 secundo pari vix tanta longitudine ; femoribus cylindricis paululum tornentosis, serie setarum curvarum in 

 parte posteriore; tibiis tertia parte longitudinis femorum, parte anteriore setis incurvatis obsita; tarsis 

 femora longitudine sequantibus compluribus breviusculis setis, inter quas setse majores sparsee inveniuntur; 

 unguibus setis perlongis, tenuibus, gracilibus coopertis. Abdomine in femina sex-articulato. 



Hab. Maria OrientaKa (littus Mindanauru). 



Ventricular and cardiac region convex, bitubercular, peduncles of the eyes with one spine. 



Carapace trigonal, convex above, lateral regions rather wider than that of the middle 

 region, carapace narrowed at the sides behind the eyes, a tubercular, rather prominent spine 

 on the antero-lateral part of the carapace, two strong and large tubercles, in the middle line, 

 on the upper surface of the carapace, which is, moreover, covered with minute granular 

 tubercles, and long, thin, scattered hairs. 



Front not quite extending as far as the end of the second joint of the external antennae, 

 deeply grooved between the orbits, in the middle line, and with a strong longitudinal ridge on 

 each side : apex truncated, horizontal, slightly emarginated in the middle, with the two 

 lateral, terminal, slightly-developed lobes, tufted with numerous straight and stiff setae ; orbits 

 entire, arched at the upper part, and slightly projecting ; peduncles of the eyes protruding 

 laterally considerably beyond the orbits, with a rather long and sharpened spine situated on 

 the anterior part ; external antennae scarcely half as long as the carapace. 



Fore-legs one and a half times the length of the thorax, with the outer and inner edges 

 fringed with long, stiff, curved hairs very regularly disposed ; third joint trigonal ; fourth joint 

 convex above, and bent outwards ; fifth joint convex externally, concave internally, curved 

 inwards, obtuse above and below, claws bent inwards, curved downwards, rather long, com- 

 pressed, inferior edge sinuated near the base, both edges finely denticulated, each with one 

 larger tooth near the base. 



First pah' of hinder legs very slender, much elongated, five times and a half the length 

 of the carapace, second pair of posterior legs hardly as long, femora cylindrical, slightly 

 tomentose, with a row of curved hairs on the posterior part ; tibiae a thud of the length of 

 the femora, the anterior part beset with incurved hairs, tarsi as long as the femora, with 

 numerous rather short hairs, and having longer hairs scattered among them ; claws covered' 

 with very long, fine, slender hairs. Abdomen, in the female, six-jointed. 



Hab. Eastern Seas (Shores of Mindanao). 



This species comes very near Inachus (Achceus) Japonicus of De Haan, Faun. Japon- 

 p. 99. t. xxix. f. 3, but the middle region has two strongly-marked tubercles, and the peduncles 

 of the eyes have but one spine instead of four. The legs are also much longer in proportion 

 than in A. Japonicus. 



