ISOI'ODA. 57 



al)Out hall" the K^igth of tlic third and forms a l»en<l in the direction of tlie appendage. 

 The two terminal ones arc large and slender, the distal one In-iiig a little the longest. 

 The pedumle hears numerous scattered sctse. The HagcUum is scarcely as large as the 

 two terminal joints of the peduncle. 



The maudilile is curved and rather tapering, it terminates in a cutting edge with 

 two stout teeth, one of whiili, the lower one, is lohed ; Ijclow these teeth are four or 

 five .spines which have their distal portions (ionvcrteil on one side into a thin finely 

 sen-ated hladc. The molar jiroce.ss which ari-ses from the hase of the organ, and is 

 almost as large, is slightly constricted in the middle ; the distal extremity is strong 

 and has a curved process or tooth anteriorly. The palp is a comparatively <lelicate 

 structure of three joints, the pro.ximal two are subecjuul in length, the third is little 

 more than half as long and terminates in a pectinate claw. 



Both pair of maxillae are (]uite normal. 



The ma.xilliped (fig. 3a) is also normal in structure, the straight inner edge of the 

 masticatory lohe hears two papilliform teeth, the distal extremity is straight and armed 

 with .setae, three at least of • these hclow the edge are hroad and finely denticulate, 

 exactly like the denticulate .spines on the ovigcrs of so many Pycnogonids, the others 

 are simple. The outer margin is rounded to some extent. The palp is five-jointed, 

 the .«econd joint being by a little the largest. The first three are broad and the two 

 large ones have a few long seta3 on their inner margin, and the other two joints are 

 cylindrical with setse distally. The epignath is large, rather more than three-quarters 

 the length of the entire masticatory lobe, it is somewhat conical in shape, attached at 

 the inner lower angle. 



Pereiopoda. The first pair are short and stout, liore the liasis is long and 

 cylindrii-al, the ischium is just half the length, the merus about half this, but 

 enlarged dorso-ventrally and with setie distally. The carpus is about half as long 

 again as the merus, swollen veutrally and armed with three stout teeth and the 

 stumps of one or two more. The propodus is rather short, stout and curved and bears 

 several setaj, the .stronger ones are ventral. The dactylus is long, slender, and has 

 an accessory claw. 



In the remaining pereiopoda the joints vary a little in their proportions, but 

 there are no structural difierences between them. All the joints are cylindrical 

 except the merus, which is swollen dorsally. The carpus is elongated and armed 

 ventrally with three or four spinous setae. The propodus is curved slightly and 

 cjirries a few strong setse dorsally and ventrally, the strongest being ventral. The 

 dactylus, long and slender, has a .small if stout acces-sory claw, and between it and the 

 terminal claw is a long seta. 



The first pair of pleopoda form an opcnuluni over the remainder in the female. 

 The sympoditc of the male is a narrow structure ; the outer margin is curved gently 

 outwards for about two-thirds of its length, it then tapers to a point. Against the 

 exterior curvature is seen the ovate ex<jpodite of the succeeding pair. 



VOL. V. p 



