Mr. E. J. Miera on Malaysian Crustacea. 469 



Nerocila {Emphylia) sundaica ? 



? Nerocila sundaica, Bleeker, t. c. p. 26, pi. i. fig. 4 (1857). 

 Emphylia ctenophora, Kolbel, Sitz. Ak. Wien, lxxviii. p. 414, pi. ii. 

 fig. 4 (1879). 



This fine species is represented in the collection by five 

 specimens (four of which are well-developed females). Length 

 of the largest about l|ineh; the smallest example (length 

 1 inch) has no brood-pouch. These agree with the descrip- 

 tion of Bleeker in all essential particulars, and also with that 

 of Kolbel, whose excellent figure leaves me in little doubt of the 

 identity of the specimens before me with his Emphylia cteno- 

 phora. Bleeker's figure, however, differs in some important 

 points ; e. cj. the basal joints of the antennae are not repre- 

 sented as dilated, but of the form ordinarily characteristic of 

 Nerocila, and the inner rami of the uropoda as somewhat 

 sinuated and not shorter than the outer. In all other respects 

 the figure seems to be a very fair representation of Emphylia 

 ctenophora. But in four out of five of the specimens of N. 

 sundaica in the collection, the superior antennae have their 

 basal joints less dilated than in Kolbel's figure, and not in 

 contact, but separated by an interval of varying width ; more- 

 over I have shown, in the case of Anilocra leptosoma, that 

 the accuracy of the minuter details of Bleeker's plates is not 

 always to be relied upon. Thus, also the outer rami of the 

 uropoda of Nerocila sundaica are described by Bleeker as 

 much longer than the inner (in this agreeing with specimens 

 before me), although, as stated above, both rami are repre- 

 sented as subequal in the figure. 



On account of the variation in the dilatation of the basal 

 antennal joints, it seems to me doubtful whether the genus 

 Emphylia can be permanently maintained ; but until a com- 

 plete transition has been observed from it to Nerocila, it may 

 be useful to retain it at least as a subgenus. 



Corallana macronema. 

 JEya macronema, Bleeker, t. c. p. 23, pi. i. fig. 1 (1857). 



Two specimens (males) are in the collection. Length of 

 the largest 9 lines. These specimens must, I think, certainly 

 be referred to Corallana, and the species placed near C. basalts 



completely to conceal both pairs of antennas. The postero-lateral angles 

 of the first segment of the body are produced into a small acute tooth, and 

 those of the seventh segment into a broader less acute lobe. The 

 cox;e of all the thoracic limbs are rather broad, posteriorly acute, but 

 do not project greatly beyond the postero-lateral angles of their several 

 segments. The uropoda are wanting. Length 1 inch 2 lines. 



Ann. & Mag. N. Hist. Ser. 5. Vol. v. 32 



