130 THE VOYAGE OF H.M.S. CHALLENGEE. 



in size, are situated in front of the anterior division of the cervical groove. The posterio 

 margin of the carapace is usually provided with two spines. 



The chelipedes are narrow and subcyliudrical, -nath the joints squamose and slightl} 

 spiny, the spines being most strongly developed on the merus ; the propodus (including 

 the immobile finger) is about three times the length of the carpus, and the spines are 

 confined to its inner surface ; the fingers are remarkably slender, and slightly curved, 

 their length being almost equal to that of the palm, the opposed edges are finely dentate 

 and in contact throughout, though three or four slightly more obvious teeth can be made 

 out on the immobile finger. The amliulatory limbs are flattened ; the upper surface of 

 the meral, carpal, and propodal joints is squamose, while the two former have their anterior 

 and posterior margins in addition spinose ; the dactyli are short and their front margins 

 are finely crenated. 



The eyes are of moderate size and slightly compressed. The anterior prolongation of 

 the first antennal peduncular joint is short, not exceeding the second joint. The ischium 

 and to a slight extent also the merus of the external maxillipedes are squamose externally, 

 the inner border of the first of these joints terminates distally in a spine, and a slightly 

 larger one is placed near the middle of the corresponding border of the merus. 



The second, third, and fourth abdominal segments bear four spines each on the 

 anterior margin, the two lateral of these are almost obsolete on the fourth segment, but 

 a prominent median spine occurs near the posterior margin : the dorsal surface of the 

 fifth and sixth segments is squamose. 



Breadth of carapace (of an adult male) 14 mm., length of body 35 mm., of carapace 

 15 mm., of rostrum 6 mm., of chelipede 62 mm., of chela 2G mm., of first ambulatory 

 leg 44 mm. 



The subeylindrical and scaly chelipedes, along with the armature of the car'apace, 

 characterise this species. Females are of slightly smaller size than males, and they 

 along with young individuals have the various spines less strongl}^ developed ; in some 

 cases the transverse cardiac spinules may even be absent. 



I have pleasure in dedicating this species to the Rev. Canon Norman, w^ell known 

 for his labours among the North Atlantic Crustacea, to whom I am personally much 

 indebted for assistance and advice, rendered when the collection was first placed in my 

 hands. 



Habitat. — Station 173, ofi" Matuku, Fiji Islands; depth, 315 fathoms; bottom, coral 

 mud. Eleven specimens, eight of which are males. 



Munida incerta, n. sp. (PI. XIII. fig. 4). 



Characters. — The rostrum is about half the length of the carapace and slightly 

 depressed ; the supraorbital spines are about two-thirds the length of the rostrum and 



