THE SHRIMP BATHYPALAEMONELLA PANDALOIDES — ^HOLTHUIS 519 



fused to one large denticulate plate; a 2-jomted palp is present. The 

 maxillula, maxilla, and first maxilliped do not differ from the figures 

 given by Balss (1925) of those parts of B. zimmeri. The second 

 maxilliped has the last joint more slender and more curved than in 

 Balss's species; an epipod and a very large podobranch are present. 

 The branchial formula runs as follov,^s: 



The first pereiopod is slender and reaches beyond the end of the 

 antennal peduncle, but it fails to reach the end of the scaphocerite. 

 The fingers are short, measuring slightly less than half the length of 

 the palm. The chela is narrow and cylindrical. The carpus is 1.4 

 times as long as the chela and lYz times as long as the merus. The 

 ischium is almost as long as the merus. Only one of the second legs is 

 present in the specimens at hand. This leg resembles the first leg, 

 but is longer and slightly stronger. It reaches beyond the scaphocerite. 

 The palm is narrow and cyliudrical, 1.7 times as long as the fingers. 

 The carpus is twice as long as the chela and somewhat longer than the 

 merus, which is 1.3 times as long as the ischium. Since in Bathypalae- 

 monella zimmeri the second legs are very unequal in shape and strength, 

 it is to be expected that the same is true for the present species. 

 However, since only one leg is present here nothing can be stated with 

 certainty in that respect. The third leg reaches with part of the 

 propodus beyond the scaphocerite. The dactylus is strongly curved 

 and bears on each lateral surface a posteriorly directed spinule near 

 the middle of the posterior margin. The propodus is more than five 

 times as long as the dactylus; it bears some spinules in the distal part 

 of the posterior margin, and many hairs are present there too. The 

 carpus is about as long as the propodus. The merus is almost 1.5 

 times as long as the carpus; it possesses a large movable spine in the 

 distal part. The ischium is half as long as the merus. The fourth 

 and fifth legs are similar to the third. 



The first pleopod of the male has the endopod large and oval in 

 shape. A large part of the inner margin of the endopod is membra- 

 naceous and at the inner side provided with minute, strongly curved 

 hooks, thus taking the place of an appendix interna. The second 

 pleopod of the male has the appendix interna and masculina of about 

 the same size. 



