REPORT ON THE CRUSTACEA MACRURA. 71o 



Picon smooth on the dorsal surface, except for a tooth on the third somite. Lateral 

 margins of the second and third somites fringed with a series of small teeth. 



Habitat. — August 11, 1874, Kandavu, Fiji Islands; surface. One specimen. 



The carapace is about one-seventh the length of the animal, anteriorly produced to a 

 long, sharp-pointed rostrum, it is dorsally smooth except for a small papilla on the frontal 

 crest, and another somewhat larger on the cardiac region. The frontal margin is laterally 

 produced to a point at the fronto-lateral angle, behind which, on the lateral margin, are 

 two or three small teeth, which after a hiatus are repeated in a series to the posterior 

 extremity. 



The first somite of the pleon is divided into two subequal portions ; the second 

 somite is subequal in length with the first but not divided ; and both have the lateral 

 margins fringed with a serrature that is bolder on the first than on the second ; the 

 third somite has the generic condition of having one part, which is generally the longer, 

 horizontal, and the other part perpendicular, the angle between the two being produced 

 to a posteriorly directed tooth ; the fourth somite is shorter than either of the preceding, 

 and has the lateral margin smooth and posteriorly rounded ; the fifth somite is still 

 shorter, and has the lateral margin smooth and posteriorly produced to an angle ; the 

 sixth somite is as long as the three preceding, laterally compressed, and gradually 

 narrowing to the extremitv, where it articulates with the telson. The telson is about 

 two-thirds the length of the sixth somite. 



The ophthalmopoda are pyriform and about one-half the length of the rostrum. The 

 ophthalmus is large and orbicular. 



The first pair of antenna? has the peduncle subequal with the rostrum, the first joint 

 long and the second and third short ; the flagella are short and subequal, and there is a 

 thick bundle of membranous cilia attached to the base of the stouter branch. 



The second pair of antennas is furnished with a scaphocerite that reaches beyond the 

 extremity of the rostrum, and is armed with a tooth on the outer distal angle. The 

 flagellum is wanting. 



Since there is only one specimen the oral appendages have not been examined. 



The pereiopoda are all developed as short, simple, seven-jointed appendages, each 

 carrying a basecphysis equal to itself in length. 



