28 ZOOLOGY OF THE VOYAGE OF H.M.S. SAMARANG. 



5. LAMBEUS PISOIDES, Adams % White. (Tab. V. Kg. 4.) 



Thorace seque longo ac lato, triangulari, marginibus lateralibus spinis depressis, rotundatis, tuberculi- 

 formibus arinatis ; media et brancliiali regionibus valde emiuentibus et convexis ; regione brancliiali products 

 ad utrumque latus in longam, validaro, acurninatam spinam retrorsum et extrorsum directam, et paululum 

 prorsum inclinatam; tota superficie thoracis obsita depressis, lsevibus circularibus, verrucosiformibus 

 tubercuHs, aliis alios magnitudine longe superantibus ; serie elevatorum tuberculorum in posteriore parte 

 lona;itudinalis lateralis sulci, medium a brancliiali regione dividentis, carinam efficientis elevatam desinentem 

 in spinam subobtusam, brevem, retrorsum, extrorsum, et paululum deorsum directam. 



Fronte acuta, productiore, utrinque dentata, angustiore, profunde sulcata in medio, in spinam valde 

 depressant triangularem desinente. 



C/ielis longissimis pro magnitudine thoracis, pari longitudine et crassitudine ; brachio lsevibus, 

 depressis tuberculis supra obsito ; marginibus antice et postice armatis compluribus longis et brevibus 

 spinis alternatim dispositis ; superficie inferiore angulo obtuso, externe lsevi, interne granulata ; carpo tuber- 

 culis verrucosis supra obsito, et externe armato tribus, validis, obtusis, recurvatis spinis ; manu triangulari, in 

 superficie superiore lsevibus, rotundis tuberculis obsita, interne et in superficie inferiore minutim granulata ; 

 margine externo valde carinato, et quinque eminentibus subcurvatis spinis armato, serie parvorum, obtu- 

 sorum, tuberculiformium processuum alternatim disposita ; in superficie interiore serie parvarum, obtusarum 

 proxime appropinquantium spinarum. 



Peclibus posterioribus parvis, tenuibus, infirmis, lsevibus marginibus superioribus obtusis ; unguibus 

 longis, acutis, depressis, villis lanosis fimbriatis ; corpore et chelis subfuscis, majusculis subrubris maculis 

 distinctis. 



Hab. Insulas Philippinas. 



Carapace about as long as wide, triangular, lateral borders armed with flattened, 

 rounded, tubercle-shaped spines ; middle and branchial regions very prominent and convex, 

 branchial region produced, on each side, into a long, strong, and pointed spine, directed 

 backwards and outwards, and inclined slightly upwards ; entire surface of carapace covered 

 with flattened, smooth, circular, wart-like tubercles, varying in size, some being considerably 

 larger than others ; a row of elevated tubercles on the posterior portion of the longitudinal 

 lateral groove which divides the middle from the branchial region, forming an elevated ridge 

 which terminates in a somewhat obtuse, short spine, directed backwards, outwards, and a 

 little downwards. 



Front acute, rather produced, toothed on each side, somewhat narrowed, deeply chan- 

 nelled in the middle, and ending in a considerably-depressed triangular spine. 



Fore-legs very long in proportion to the size of the carapace, and equal in length and 

 thickness ; third joint covered above with smooth, flattened tubercles, the margins before and 

 behind armed with numerous, long and short spines arranged alternately, lower surface bluntly 

 angled, smooth externally, granulated internally ; fourth joint covered above with warty 

 tubercles, and armed externally with three strong, obtuse, recurved spines ; fifth joint trian- 

 gular, covered with smooth, round tubercles on the upper surface, finely granulated internally, 

 and on the under surface, with the external margin strongly keeled and armed with five 

 prominent, slightly-curved spines, finely denticulated on their edges, and alternating with a 

 row of small, blunt tubercle-shaped processes ; on the inner surface a row of small, blunt, 

 closely-approximated spines. 



