’s RISKS MUSEUM VAN NATUURLIJKE HISTORIE — LEIDEN. 157 

of the carapace is as broad as the front, as Biirger observed, but in 
other cases the front is distinctly broader. 
De Haan remarks, that the chelae are equal, but judging from my 
material this is not always the case. The whole cheliped is remarkably 
destitute of spines and even of granules. Superior border of arm without 
subdistal tooth, wrist with obtuse inner angle. Palm much inflated, very 
high, with rounded upper surface, which has some few subparallel, short 
lines of small granules running obliquely-longitudinally ; whole surface 
perfectly smooth and shining, save some irregular granules in the middle 
of the inner surface. 
Fingers widely gaping in the adult ©’, not so in young specimens; 
immobile finger very high at the base and much flattened, rapidly nar- 
rowing towards the tip. Upper margin of mobile finger with a regu- 
lar series of 16—18 tubercles, somewhat less in the Q 
than in the ©, gradually becoming indistinct towards the tip. This 
feature, however, is only pronounced in not yet full-grown specimens 
and disappears entirely in adult individuals. De Haan does not say any- 
thing about this row of tubercles, and Birger only mentions a fine den- 
ticulation. 
Meropodites of walking legs very slender, both margins of carpo- and 
propodites clothed with the usual short fur and some longer hairs; dactyli 
with short bristles, very slender, longer than their respective propodites. 
The anterior part of the carapace is brightly red, which colour ex- 
tends also to the cardiac region. Likely coloured are the carpopodite and 
the palm of the chelipeds; de Haan remarks that owing to its bright 
chelae the species is easily detected in life. 
| 2 
Dimensions: fot O 
Distance between external orbital angles. . . . . 28.— 27.5 mm. 
Centos PULeAuGnM OL, CALapace . etd.) i natal os). A Leys OOLOm aro LeOle Hts 
envi omearapace, imtuesmedian, line) 52)2.f'. (ely Ade 2 a 
MSeACMMOL ARON bya: \/ Aa aMe Gl gRtbL fet cline adele hee y SAR OV TPA irg whe 
Horizontal length of chela (palm + immobile finger) . 29.51) 20.— , 
sil doh one Te a eck Cle Ca Dey VOSTO ks 
Length of meropodite 20.— 19.— , 
Breadth of meropodite 6.75 T.— ,y 
Length carpo--+ propodite ) of penultimate pair of legs 21.5  21.— , 
Breadth of propodite DED), y\ Paez Owy 
Length of dactylus 15.— 13.5 , 
1) 1n this specimen I measured the right cheliped, that was considerably larger than the left. 
