79 



The three specimens from Stat. 162 agree perfectly well with my description (1. c.) of a 

 young individual from the Java Sea. The largest, a female, is 45'/^ mrn- long, from the anterior 

 margin of the outer antennae to the end of the telson : it is almost adult, for, according to 

 Stimpson, this species attains a length of 56 mm. Measured in the middle line, the carapace 

 appears to be i4 s / 4 mm. long, the antennular somite included, and 1 3 3 / 4 mm - without it; the 

 distance between the antero-external angles is 14 mm., so that this specimen is not broader than 

 long, conform to Stimpson's description. The following may be added to my first description. 

 The three teeth in the mid-dorsal line of the carapace are covered with squamiform prominences 

 and a longitudinal row of 5 or 6 small similar prominences occurs in the furrow that separates 

 the cardiac region from the lateral carinae. The 2 nd , 3 rd and 4" 1 pleura are obtusely pointed, 

 the 5" 1 is rounded. 



The proximal (outer) antennal squame (PI. II, fig. 11), which is a little longer than wide 

 and traversed, about in the middle, by a moderately prominent, smooth ridge, is armed on its 

 outer margin with an acute tooth, behind which there is a tracé of a second; the tip of the 

 larger tooth is situated almost in the middle of the outer margin. The rudimentary posterior 

 tooth has not been described by Stimpson: examined under the microscope the outer margin 

 appears a little serrulate between the large tooth and the sharp extremity of this joint. While 

 therefore the outer margin resembles closely that of Scyll. vitiensis (J. D. Dana, 1. c. PI. 32, fig. ja), 

 the inner carries only one distin et tooth, not three as in Dana's species, for a barely 

 distinguishable tracé of a very small, obtuse prominence before this tooth, which was likewise 

 observed in the young specimen from the Java Sea, cannot be regarded as a tooth. While 

 in the male the propodus of the 5 th legs is subcylindrical, its lower border terminates in the 

 female, at the distal end, in an acute tooth, which is barely half as long as the somewhat 

 curved, pointed dactylus, with which it forms an incomplete chela. 



In the male the abdominal appendages of the 2 nd somite are biramous, both rami being 

 falcate-foliaceous, but narrow, with some setae on the distal half of one margin ; they are ot 

 somewhat unequal length and the longer is also a little broader. The appendages of the three 

 following somites are probably rudimentary. The pleopods of the 2 nd somite of the female are 

 biramous, the rami foliaceous, broad ; the endopodite which is but little less broad than the 

 other ramus, carries a styliform appendix which, in the largest specimen, is 0,7 mm. long; its 

 distance, 1 mm., from the proximal end of the inner border of the endopodite is a little longer 

 than its own length and about one-third of the distance between its base and the extremity of 

 the endopodite. This internal appendix carries no cincinnuli, but some plain setae at its extremity 

 and these setae are 2 mm. long, 3-times as long as the appendix itself. The pleopods of the 

 three following somites resemble those of Scyll. Haanii Berthold. 



On a grayish ground-colour the carapace of the largest specimen (Q) is marked with 

 three ochraceous flecks, one in the middle of the cardiac region and one on each side on the 

 declivous branchial regions; except on these red spots, the squamiform prominences show a 

 paler, more whitish colour. The smooth, anterior, underlying part of the three first abdominal 

 terga is of a pale slate-colour, the i st somite (PI. II, fig. \\a) is marked with a quite 

 characteristic, o val, trans verse fleck of a very dark, almost black, slat e- 



