50 ZOOLOGY OF THE VOYAGE OE H.M.S. SAMARANG. 



tubercles on the edge near the base ; fixed or lower claw margined on the under side ; the 

 cutting edge with a very wide shallow tubercular sinus at the base ; at the end of the sinus, 

 beyond the middle, a strong wide tooth, gradually sloping down to the end, which curves 

 upwards. 



Hab Philippine Islands. 



4. GELASIMUS POBCELLANUS, Adams 8f White. 



Ocidorum joedunculis perlongis. 



Thorace parte frontali non coarctata ad basin ; parte posteriore longiore quarn latera. 

 Chelis digito inferiore ad finem incrassato, margiuibus internis digitorum amborum tuberculis magnis 

 quatuor inter parvos crenulos. 

 Hab. Borneonem. 



Bye-pedicels very long. 



Frontal portion of carapace not narrowed at the base ; hind part of carapace much 

 longer than the sides. 



Fore-legs with the lower claws thickened at the end, the inner margins of both claws with 

 four larger tubercles amongst the small crenules. 



Hab. Borneo. 



5. GELASIMUS EOKCIPATUS, Adams $ White. 



Thorace valde postice coarctato. 



Fronte, inter oculos, lobo dilatato, linea acuto-marginata, ab angulo canthi externo porrecta. 

 Chela majore digitis sequalibus, dente prope medium, et prope extremitatem, lobo truncate 

 Hab. Borneonem. 



Carapace much narrowed behind. 



Front with a dilated lobe between the eyes ; from the outer orbital angle a sharp-edged 

 line continued beyond the middle of carapace. 



Fore-legs with the larger claw nearly equal in size, with a tooth near the middle, and a 

 truncated lobe towards the end ; a rather broad impressed line along the middle of each 

 claw ; upper edge of palmar portion with a slight ridge ; outer side of palm covered with 

 very slight tubercles. 



Hab. Borneo. 



VII. GONOPLACID.E. 



The Macropthalmi inhabit muddy flats along the sea-shores, and, when disturbed, 

 bury themselves quickly in the yielding soil, leaving the ends, however, of their long telescope- 

 eyes above the surface. When taken, they are quite defenceless, not using their fore-legs as 

 organs of aggression, or erecting and snapping them as do the Gelasimi. They are nume- 

 rously distributed throughout the Philippine Archipelago and the islands in the China Sea. 



