39G PR. W. M. TATTERSALL ON THE STOMATOPODA AND 



The antennal peduncle (PI. 28. fig. 16) is composed of four segments with 

 no prominent spines on any of them. Between the second and third 

 segments there is the articulated remnant of the antennal scale, consisting of 

 a small triangular plate with two small apical teeth. The second joint is 

 furnished with a row of very long sette on the whole of its lower margin. 

 This row of setse is continued across the outer face of the third joint and 

 terminates in a dense brush on the upper distal corner of the joint. 



The first pair of legs (PI. 28. fig- 18) are equal in size and subchelate in 

 both sexes. The merus is equal in length to the propodus and double the 

 leno'th of the carpus. The propodus or palm is three times as long as wide, 

 oblono- in shape with parallel sides. The movable finger is about half as 

 lon»- as the palm, and the fixed finger rather less than half the length of the 

 movable one. The fixed finger bears five small tubercles on its proximal 

 half and impinges on a prominent tooth on the movable finger so that a false 

 chela is thereby formed. There are no prominent spines on any of the joints 

 but the limb is richly provided with seta3. The merus has a row of very long 

 setfe on its inn«r and lower margin, while the carpus has a dense fringe of 

 small hairs on its upper margin. The palm has its lower margin fringed with 

 lono- setEB, and there is a dense row of shorter hairs on its outer face besides 

 other scattered hairs. The movable finger is well provided with setfe. 



The second leg (PI. 28. fig- 19) has the merus about equal to the propodus 

 and carpus combined, the proportions of the joints being merus. 3 - 75, 

 carpus 1*75, propodus 2, dactylus 1. The propodus is two and a half times 

 as long as broad. There are no specially prominent spines on these legs, but 

 the merus, carpus, and propodus are well provided with long setfe. 



The third and fourth legs (PI, 28. fig. 20) are specially noticeable for the 

 form of the dactylus. Tts outer margin bears five to seven tubercles and 

 the inner margin a dense saw of about 1-4-16 finely pointed teeth on the 

 distal part. 



The fifth legs (PI. 28. figs. 21-22) have the usual subchelate arrangement 

 due to a prolongation forward of the lower edge of the propodus. This 

 prolongation is about half as long as the dactylus and terminates in a 

 prominent tooth. The dactylus bears a saw of fine teeth on its inner margin. 

 The telson is broader than long, its lateral margins parallel, the lateral 

 coiners evenly rounded and the posterior margin straight. It is of the same 

 length as the uropods. 



Length of an ovigerous female, 12 mm., of the only male, 6 mm. The 

 male specimen agrees full)'' with the female, but I am unable to say whether 

 there is the marked sexual dimorphism in size which the two specimens 

 suggest. 



Among described species, U. pseudochelata approaches most nearly to 

 U. lieterocJieir, Kemp, 1915 «. The latter has the same pseudochelate form 



