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



with three rounded tubercles, and forked anteriorly, leaving a depressed, triangular interval ; 

 lateral edges rather conspicuously crenated, the crenations flattened and rounded ; latero- 

 posterior angles ending in a flattened, triangular, rather obtuse, spiny process ; hind part of 

 carapace with a strong spine, directed backwards and outwards, slightly tuberculiferous, and 

 continued in a strong ridge upon the posterior portion of the branchial region ; another 

 smaller spine, situated nearer the middle line, likewise strongly carinated, leaving a depressed 

 space between it and the former spine ; three small tubercles in the median line, one central, 

 and one on each side. 



Front but little produced, rounded anteriorly, with the margin slightly denticulated. 



Fore-legs about twice the length of the carapace, third and fourth joints with the edges 

 armed with rounded tubercles ; fifth joint smooth, with the upper angular edge tuberculi- 

 ferous. 



Hab. China Sea ; coast of Borneo. 



In the living state, this singular species is of an olive-green colour, with the fore-legs of 

 a light pinkish-brown, and the under surface of a slate colour. 



2. LAMBEUS LAMELLIFRONS, Adams Sf White. (Tab. V. Fig. 1.) 



Thorace loiigiore quam latiore, tribus majusculis tuberculis in parte posteriore superficiei superioris; 

 una in medio et una ad utrumque latus ; lateribus thoracis in medio crenatis ; latitudine thoracis 4-g- lin. 

 longitudine 5| lin. 



Chelis longissimis. 



Hab. Insulas Philippinas. 



Carapace longer than wide, with three rather large protuberances on the hinder part of 

 the upper surface, one in the middle, and one on each side ; sides of carapace, about the 

 middle, crenated. Breadth of carapace four lines and a half; length five lines and three 

 quarters. 



Fore-tegs very long. 



Hab. Philippine Islands. 



3. LAMBRUS TURRIGER, Adams fy White. (Tab. V. Fig. 2.) 



Thorace longiore quam latiore pentagono paululum producto, in fronte acuminato. Superficie 

 superiore quatuor spinis elevatis, crassulis et ad extremitates obtusis ; prima inter anteriorem et posterio- 

 rern partem thoracis, sursum et paululum retrorsum directa; altera post multo longiore; tertia ad 

 utrumque latus alterius in posteriore thoracis margine ; in medio duabus spinis retrorsum et paululum 

 sursum directis ; prima et altera spinis anterioribus sublongis ; tertia in medio thorace longa, ver- 

 ticali, et subacuminata ; spinis in elevato tuberculo regionis branchialis positis, longis, crassis, erectis 

 et paululum extrorsum retrorsumque directis ; tota superficie thoracis obtusis subconicis tuberculis obsita. 

 Latitudine thoracis vix 4 hnearum ; longitudine vix 4-j hnearum. 



Fronte parva, valde depressa, breviuscula, subobtusa ; in medio profunde concava, parvo dente ad 

 utrumque latus. 



Chelis longissimis pro magnitudine corporis, tuberculis verrucosis, lsevibus, ad latera rotundatis, 

 in cristis angularibus spinosioribus. 



Pedibus posterioribas gracillirois, lsevibus, supra et infra rotundatis, unguibus longis, tenuibus, paululum 

 depressis et acutissimis. 



Hab. Insulas PliiKppinas. 



