772 



CRUSTACEA. 



last segment has its sides slightly converging, and then towards its 

 extremity there is a sudden convergence to the rounded apex. 



ClROLANA LATISTYLIS. 



Corpus Iceve, nudum, ad abdominis basin nix interruptum. Caput 

 transversum, antice rotundatum, segmento proximo non longius. Ab- 

 domen Q-articulatum, segmento Imo sub thorace fere celato; ultimo 

 subtriangulato, paulo oblongo, extremitate late rotundato et crenulato, 

 spimdis et pilis longiusculis ornato. Appendices caudales abdominem 

 non superantes, lamelld internd late subovatd, pilis et spinulis ac in 

 segmento caudali, pilis dimidio lamellce brevioribus, externa plane bre- 

 niore, duplo angustiore. 



Body smooth, naked, but slightly interrupted at base of abdomen. 

 Head transverse, anteriorly rounded, not longer than next segment. 

 Abdomen six-jointed; first segment nearly concealed under the 

 thorax; caudal segment subtriangular, a little oblong, broadly 

 rounded at extremity and crenulate, and ornate with spinules and 

 shortish hairs. Caudal appendages not reaching beyond line of 

 abdomen, inner lamella broadly subovate, having crenulations, 

 spinules, and hairs like the caudal segment ; the hairs not half as 

 long as the lamella; outer lamella considerably the shorter and 

 half narrower. 



Plate 51, fig. 6 a, abdomen, much enlarged ; b, part of flagellum of 

 longer antennae ; c, leg of third pair. 



Straits of Balabac, north of Borneo. 



Length of body, three lines. The legs of the three anterior pairs 

 are rather spiny below, especially the third joint ; the fourth joint of 

 the third pair is a little shorter than either the third or fifth pairs, 

 and longer than the tarsus. The spinules of the extremity of the 

 abdomen arise from the bottom of the crenulations. The joints of the 

 flagellum of the second antennae are quite oblong ; there is a hair or 

 two at upper apex as long as the diameter of the joint, and another 

 below, a little shorter. 



