309 



spiue of the ratlier broad scaphocerite very small, curved iuward 

 and not reaching beyond the rouuded auterior margin of the 

 scale; carpocerite about twice as long as thick, a little shorter 

 thau antennular peduncle. 



Sixth abdominal somite with the pleura movable, articulate. 

 Telson, as in Parabetaeus Culliereti, strongly narrowed backward 

 and terminating in au acute tooth, that measnres '/g the whole 

 leugth of the telson and that makes distinct obtuse angles with 

 the lateral parts of the posterior margin ; spiuules of upper sur- 

 face and of posterior margin as in the genus Parabetaeus. 



First pair of legs wanting. Second legs as in Parabetaeus, Ist 

 carpal segment longer than the sum of the four following, the 

 proportion being as 1 : 0,85 ; 2nd and 4th equal, a little longer 

 than 3rd, 5th twice as long as 3rd; chela twice as long as 5th 

 segment. 



Relative dimensions of 3rd pair: Meropodite 1,4; carpus 1; 

 propodite 1,16. Meropodite 6 times, propodite 9 times as long as 

 wide, carpus 7 times as long as thick. Meropodite with oue or 

 two spinules on posterior margin, propodite with five; dactylus 

 simple, -/g of the propodite, slender. 



Ova 0,65 mm. long. Length of the single specimen collected 

 18,5 mm. 



23. Betaeus indicus, n. sp. 



Station 34. Anchorage off Labuan Paudau, Lombok. Depth 

 18 M. 



Closely related to Bet. aequimanus Dana. Frontal margin but 

 very slightly emarginate, the emarginatiou concave. A fine suture 

 runs from the antero-iuternal angle of the orbital hoods, on their 

 inner side, backward and both sutures unite, at the base of the 

 hoods, to run as a narrow, median suture or groove backward, 

 almost to the middle of the carapace; orbital hoods separated 

 from oue another by a shallow, triangular groove. Eyes almost 

 eutirely covered by the carapace, ophthalraopods produced foreward 



