394 Records of the hidian Museum. [Vol. XII^ 



The mandible resembles that found in the genus Thor ; the 

 incisor-process is well developed and is furnished with about seven 

 teeth at the apex. The palp is entirely absent and the molar pro- 

 cess is cleft and furnished with slender spines, many of which are 

 serrate. 



The second maxilla is normall}' developed ; the distal endite 

 of the endopod is divided into two parts of equal breadth. The 

 first and second maxillipedes possess epipods, that of the former 

 being emarginate distally, while that of the latter is deeply bilobed. 

 The ultimate segment of the endopod of the second maxillipede is 

 placed terminally at the end of that which precedes it and is not 

 applied as a strip along the outer margin of the latter as in the 

 great majority of the Caridea. The third maxillipede (text-fig. 2d) 

 does not possess an epipod ; the exopod is small but foliaceous, 

 reaching about to the middle of the antepenultimate segment. 

 The ultimate segment (text-fig. 2e) is less than twice the length 

 of the penultimate and is not three times as long as broad ; in 

 addition to numerous hairs it bears a series of nine or ten sharp 

 spinules in its distal half. 



The first peraeopods (text-fig. 2/) are stout, but very short ; 

 the ischium and merus and carpus are sub-equal, a little shorter 

 than the chela. The segments bear long setae but are otherwise 

 unarmed. The chela (text-fig. 2g). is rather more than twice as 

 long as broad and the fmgers are distinctly longer than the palm. 

 On the interna] surface of the chela the fingers are deepl}' hollowed 

 or spooned near the cutting margin, while externalh^ each forms 

 a thin blade with a saw-like edge, the two meeting throughout 

 their length when the claw is closed. At the extreme tip each 

 finger is provided with three large teeth. 



The second peraeopods (text-fig. 2h) are much longer, reach- 

 ing nearh^ to the tip of the antennal scale. The carpus is almost 

 as long as the ischium and merus combined and consists of two 

 segments, the second a little shorter than the first and about twice 

 as long as broad. The chela is almost two-thirds the length of the 

 carpus and nearly two and a half times as long as wide, the fingers 

 being about one-third shorter than the palm. When the claw is 

 closed the fingers meet only at the tips where they cross each other. 



The last three pairs of peraeopods (text-fig. 2i) are similar and 

 show no sexual differences. The carpus is scarcely shorter than 

 the merus and is a trifle longer than the propodus. The propodus 

 is armed beneath with five or six spines, two pairs towards the 

 distal end and one or two others, which are smaller, near the mid- 

 dle. When the dactylus is folded inwards it lies between the two 

 spines constituting the distal pair and thus forms a poorl}^ de- 

 veloped grasping organ. The dactylus (text-fig. 2/) is short, spines 

 included about two-fifths the length of the propodus : on its in- 

 ferior edge it bears a series of "seven or eight spinules which in- 

 crease in size distally, the two terminal ones being large spines. 

 All the legs bear very long plumose setae, especially conspicuous 

 on the ischium, merus and carpus. 



