678 ON CRUSTACEA, CHIEFLY FROM SOUTH AMERICA. [JunC 19, 



margin inflcxed, appearing nearly straight in a dorsal view ; posterior 

 margin with a small, median, rounded lobe received into a correspond- 

 ing emargination in the anterior margin of the first segment of the 

 body. First segment of the body longer than the succeeding. Last 

 segment of the tail longer than broad, narrowed to its extremity, 

 which is subacute. Coxae transverse and obtuse at their posterior 

 extremity. Legs short, witli the thigh-joints not dilated. Uropoda 

 very slender ; outer ramus very long, more than twice the length of 

 the inner. Length 1 inch. 



Hab. Mauritius {R. Templeton). (Coll. Brit. Mus.) 



This species is at once distinguished by the form of the rami of 



the uropoda. The habitat, which is given as " Indian Ocean," in 



the ' List of Crustacea,' I. c, is marked "Mauritius" on the label 



attached to the specimen. 



EXPLANATION OF THE PLATES. 



Plate LXVI. 



Pig. 1. CUbanarhis cayennensis, p. 657, natural size. 



2. • car7icscens, p. 658, natural size. 



3. Carapace, frontal region, eyes and antennas of Clibanarius speciosus, 



p. 658, magnified about twice the natural size. 

 3 a. Hand of the same, magnified twice natural size. 



4. Clibanarkis lordi, p. 668, nat>iral size. 



4«. Carapace, frontal region, eyes and antennas of the same, magnified 

 twice the natural size. 



Plate LXVII. 



Fig. 1. Palwmon jelskii, p. 661, lateral view, magnified about twice the natural 

 size. 

 1 a. Carapace, frontal and antennal region of the same, dorsal view, mag- 

 nified twice the natural size. 



1 b. Terminal segment and uropoda, magnified. 



2. Euryrhynchus wrzesniowskii, p. 662, lateral view, magnified four tunes 



the natural size. 



2 a. Carapace, frontal and antennal region of the same, magnified four 



times the natural size. 



2 h. Terminal segment and uropoda, magnified. 



3. Armadillidium calatum, p. 665, dorsal view, magnified twice the natural 



size. 



3 a. Dorsal view of head. 



3i. Dorsal view of tail- segments of the same, further magnified. 



4. Cuharis affinis, p. 666, lateral view, magnified twice the natural size. 



4 a. Dorsal view of head. 



4 b. Dorsal view of tail-segments of the same, further magnified. 



Plate LXVIII. 



Fig. 1. Cubaris gigas, p. 666, lateral view, natural size. 

 1 a. Head viewed from above. 

 1 6. Head viewed from below, showing position of the antenna;. 



1 c. Segments of the tail, dorsal view, all further magnified. 



2. Porcellio cayennensis, p. 667, dorsal view, magnified twice the uatur.il 



size. 



2 a. Front view of head. 



2 b. Segments of the tail, dorsal view, further magnified. 



3. Porcellio jelskii, p. 668, dorsal view, magnified twice the natural size. ■ 



