360 Mesi^rs. J. Wood-Mason and X. Alcock on 



30. Crutiyoa heiKjalensis^ sp. n. 



$ . Rostrum acuminate triangular, tlie unarmed tip ex- 

 tending by about lialf its length beyond the level of the eyes, 

 aimed at tlie sides with three j)airs of sharp spines, of which 

 the basal pair is only slightly more distant from the second 

 jiair than this is from the third pair. Eyes very short, owing 

 to the reduction in length of the basal joint. 



Median dorsal carina of the carapace divided into five 

 forwardly- directed sharp spines; subdorsal cariiife continuous 

 with tlie sides of the rostrum, also 5-s|)inose, witli a consider- 

 able unarmed interval between its foremost spine and the 

 basal rostral spine with which it is continuous ; sublateral 

 carina? 3-spinose in their anterior half, ending abruptly some 

 distance from the extra-orbital spines with which they are in 

 line ; lateral carinjs continuous with the antennal spines, 

 unispinose near the anterior end ; marginal carina? entire, 

 unarmed, continuous with the branchiostegal sj)ine3. Tiie 

 first abdominal tergum is furnished with six anteriorly spinose 

 carina? — two dorsal, two subdorsal, and two sublateral — as 

 well as with unarnied rudiments of two lateral carinie; the 

 second tergum with three similar carime, of which one is 

 . dorsal and two aie subdorsal, as well as with two unarmed 

 Bublaterals ; the third and fourth terga have only an obtuse 

 median dorsal carina, wjiich in the latter is produced in the 

 middle line jostcriorly into a small point, as well as indistinct 

 remains of sublaterals ; the fifth and sixth have two poste- 

 riorly somewhat divergent sharp dorsal carina, which in the 

 latter are minutely unispinose rather behind the second third 

 of their length ; the tilth has also two lateral carina? and the 

 sixth one. 



Kyes in S[»irit dark chocolate-brown. 



Total length from tip of rostrum to tip of telson 44 millim. ; 

 hnigth of carapace from tij) of rostrum to middle of posterior 

 nuu-gin 13*5 millim., of abdomen to end of telson 30"5 miUim. 



(jne ovigerous female from Station ll^O, 240 to 276 tathoms, 



31. Crangon andamanennis, S[). n. 



Closely allied to the preceding, from which it differs in the 

 fuUowing points: — (1) J'he two apical pairs of rostral spines 

 are equidistant between the tip of the rostrum and the basal 

 pair; (2) tlie rostrum is not so acumlm^te, its terminal por- 

 tion being more broadly triangular; (3) the subdorsal cariniB 

 ( f the carajiace are only 4-spinose, the sublaterals are 5-spinose, 

 and the laterals are usually bispinose ; (4) the dorsal carina 



