124 



distaiiee betweeii tlie foremost toutli and the apical tootli varies 

 rathei' much, so that sometimes the foremost tooth is situated 

 just midway between the apex of' the rostrum and the orbital 

 margin, in other specimens, however, beyond the middle. The 

 Ist tooth of the upper margin is situated a little before the 

 middle of the earapaee, its distance from the posterior margin 

 being twice or a little more than twice as long as its distance 

 from the orbital margin. Near the slightly falcate first tooth of 

 the lower margin that part of the rostrum which is situated be- 

 neath the lateral crest, appears about one and a half as broad 

 or high as that part which is situated abovo it. 



Nearly as in L. lotu/iro.^fris tlu' rostrum, like also other parts 

 of the body and of the legs, as e. g. the posterior margin of the 

 segments of the abdomen, the caudal fan etc, is sprinkled with 

 small reddish dots (chromatophores ':^), though in most specimens 

 they are disappeared. 



Antennal and brancliiostegal spines small, especially the latter, 

 that has </ suialler size than in L. /onf/irosfri^. Telson (Fig. 1'/ and Ir) 

 a little longer than 6th segment of abdomen, in the same 

 proportion as in L. Jo)i{/irostris, but hofh f/iis s(</iii(iif niid f/ie 

 fclson^ li/,r <th<) fhc iiropods. jfrrsciif (i soiiicir/Hif sfoiifcr foriii. 

 beinij sikfJitUj broader in proporfioit to fJit^tr IcHf/fli flinii 'm L. 

 longirostris (Plate XII, Fig. 3(/). 



In the male (Fig. l/") the antennular peduncle reaches to 

 midway between the distal extremity of the antennal scale and 

 that of the spine in which terminates the lateral margin of the 

 scaphocerite ; sometimes it is slightly shorter, not yet rcaching 

 that spine, but in this case the peduncle measures, however, 

 always at least 6/7 the distance between the orbital margin and 

 the tip of the scale. In the female (Fig. 1 g) the antennular 

 peduncle is much shorter and measures only tkree-qn(irters that 

 distance. The shorter ranius of the outer flagellum, the coalesced 

 part included, appears Jiist «.s lonr/ as the antennular peduncle, 

 measured from the orbital margin. The coalesced portion appears 

 either a little longer (Fig. Ih) or a little shorter (Fig. !ƒ/) thau 



