1912.] S. KEMP& R. B. S. SewRI.!,: Notes on Decapoda, III. 21 



on the carapace and disappears before reaching the posterior 

 third. The antero-inferior angle of the carapace is rectangular — 

 not spinous (fig. 4). 



The abdominal terga are all smoothly rounded dorsally. 

 The sixth somite is longer than the telson excluding its terminal 

 setae and is more than twice the length of the fifth. The telson 

 is a little shorter than the inner uropod ; its apex is very narrow 

 and is furnished with two pairs of spines the outer of which is 

 more than twice the length of the inner. The upper surface of the 

 telson is slightly flattened and is provided with two pairs of 

 dorso-lateral spinules. Theie is no movable spine at the base of 

 the uropods. 



The cornea of the eye is greatly expanded ; it is much wider 

 than the stalk and its breadth is fully a quarter the median 

 length of the carapace. In the entire absence of an ocellus the 

 species differs markedly from M . agulhasensis. 



The antennular peduncle reaches to about half the length 

 of the antennal scale. The basal joint is long and bears a 

 sharply-pointed lateral process which reaches nearly to its distal 

 end ; the second and third segments are very short and subequal. 

 The antennal scale is distinctly shorter than the carapace. Its 

 outer margin is slightly concave and terminates in a short spine 

 wdiich fails to reach the apex of the lamella. 



The mandible is provided with a large incisor process and 

 a three- jointed palp. The basal segment of the latter is distinctly 

 longer than the second (fig. 3), The first and second maxillipeds 

 each possess an exopod and an epipod and the second maxilliped in 

 addition bears a large podobranch. The third maxilliped also 

 possesses both an exopod and an epipod, the former reaching to 

 about half the length of the antepenultimate segment. 



The first peraeopod reaches almost to the end of the an- 

 tennular peduncle ; the carpus is about the same length as the chela 

 and the fingers are less than half the length of the palm. On the 

 internal surface of the carpus near its distal end is an excavated 

 notch, margined with setae and having a stout spine at its 

 proximal end. The apparatus resembles a comb and is perhaps 

 used for cleaning the antennae or other appendages (fig. 2). 



The second peraeopods reach beyond the end of the antennal 

 scale by almost the whole length of the propodus. The carpus 

 is composed of 14 or 15 segments, the ultimate of which is only 

 a trifle shorter than the chela. 



The third peraeopod reaches beyond the apex of the scale by 

 the length of the dactylus. At the distal end of the merus are two 

 stout spines. The fourth peraeopod reaches only to the end of 

 the antennular peduncle and is shorter than the fifth which reaches 

 to the tip of the spine at the distal end of the antennal scale — on 

 the distal half of the merus of these two last pairs there 

 are a few large spines the number of which seems subject to 

 considerable variation. The dactyli of the last three pairs bear 

 from four to six strong spines. 



