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



than from above downwards ; the cornea of the eyes projecting beyond the outer margin 

 of the front, nearly filling up the orbital cavities, the upper margins of which are salient. 

 The latero-anterior borders of the carapace armed with a single, strong, flattened process ; 

 conical, trenchant, broad at the base, the outer edge slightly elevated, with the point 

 curving forwards. The first joint of the external antennas very large, long, and cylindrical, 

 antennae covered by the rostrum. Epistome very nearly similar to that of Acanthonyx. 

 The chelse, shorter than in that genus, are armed with flattened, conical, slightly obtuse 

 spines. The second joint triangular, with an external and internal conical spine, the 

 external very long, and directed upwards and forwards ; the third joint armed with three 

 spines ; one superior-posterior, and directed forwards ; two anterior-lateral, directed outwards 

 and rounded at their extremities ; the fourth joint crested with a sharp, flattened spine. 

 The legs short, thick, very much compressed ; the third joint with two large, flattened 

 conical spines on the front, directed forwards ; the fourth joint with but one flat, spinous 

 process on its anterior part ; the fifth joint enlarged and furnished posteriorly with a sharp, 

 flat, curved spine, directed backwards. 



This beautiful genus is very apathetic when alive ; in that respect resembling Lambrus. 

 In the system it is not far removed from Acanthonyx and Huenia. The description is from a 

 female. 



1. ZEBBLDA ADAMSII, White. Tab. VII. Fig. 1. 



Colore subcarneolo, fasciis rufo-fuscis ; linea intermedia antice bifurcata, dcinde in basin inte- 

 riorern cornuum rostri obsoleta, postice ad ultimum abdominis articulum pertinente, linea utrinque 

 tenui duplice paululum undulata ; duabus latis lineis pertinentibus ab apice spinarum rostri, in ultimo 

 abdominis segmento concurrentibus, in medio thorace angustatis; linea extra tenui, duplice; extra 

 banc lineam fascia lata, paululum curvata, ad postero-exteriorem thoracis angulum subito desinente; 

 latiore fascia rufo-fusca ad basin spinarum antero-lateralium. Duabus latis, rubro-fuscis fasciis in 

 omnibus pedum articulis, subdiagonaliter trans articulum directis; una lata fascia eodem colore in 

 quarto et quinto articulis. Superficie infeiiore colore paullo intensiore. Exteriore parte abdominis 

 segmentorum puncto circulari subnigro. Tota animalis superficie lsevi, sine setis, dura, polita et porcel- 

 lana; oculis nigris. 



Hab. Borneo. 



In colour this species is of a light, delicate pink, with dark liver-coloured markings. 

 There is a central line bifurcated anteriorly, where it is lost on the inner bases of the horns of 

 the rostrum, reaching posteriorly to the last joint of the abdomen, and having external 

 to it a fine, double, somewhat waved line ; extending from the apex of the rostral spines, and 

 meeting at the last abdominal segment, are two broad lines, narrowed in the middle of the 

 carapace ; external to these is a fine double line, and on the outside of this is a broad, some- 

 what curved stripe, ending abruptly at the postero-external angle of the carapace ; and at the 

 base of the antero-lateral spines is another rather broad linear mark of the same dark liver- 

 colour. The third joint of all the legs has two broad, dark, red-brown bands, directed some- 

 what diagonally across the joint ; the fourth and fifth joints have one broad mark of the same 

 colour. The under surface is of a somewhat darker colour. On the outer part of the 



