1908.] TERRESTRIAL ISOPODS PROM TANGANYIKA, 557 



scarcely longer than the third (without reckoning the brush-like 

 setiform apical process), therefore not as in P. suarezi nearly 

 equalling in length the two together. In the example figured, 

 however, the third joint is a little shorter than the second. 



The upper lip has its distal margin evenly rounded. The 

 cutting-edge of the mandible is divided into four horny- lookino- 

 blunt teeth. The secondary plate on the left mandible has the 

 same horny appearance, but that on the right is pellucid. The 

 other features have been already discussed. The first maxillae 

 have the two phimose setge seated on the inner part of the apex ; 

 of the spines on the outer plate the outermost is, as usual the 

 strongest ; of the three following the intermediate is short ; to 

 these simple spines succeed four, each with a subapical tooth. 

 The second maxillse have been already discussed. The maxillipeds 

 have the plate of the large and long second joint extending to the 

 apex of the palp's second joint, notched at the inner distal angle, 

 where it has one minute spine-tooth, a little behind which a 

 regular spine rises from a little surface-lobe, and at the outer 

 distal angle the apical margin has two more spine-teeth, also of 

 very small size. The second joint of the palp is furnished with 

 one or two setiform spines, and the slender, faintly separated 

 third joint has setules on the outer margin and apex. 



The first gnathopods have the third, fourth, and fifth joints 

 much bi-oader thaii the sixth ; the fourth and fifth subequal in 

 length, strongly spined on the hind margin, the fourth with a 

 row of tiny denticles on the proximal part of its front margin, 

 the fifth with oblique rows of spinules on the inner surface, the 

 distal series projecting beyond the obliquely truncate distal 

 margin ; the sixth joint has the hind margin proximally furred 

 with spinules. 



The fifth perteopods are, as usual in the allied forms, the 

 longest of the limbs. They have the fourth joint shorter than 

 the third or fifth, and the fifth shorter than the sixth. In the 

 young, taken from the mother's pouch, with eyes and other parts 

 well developed, no trace of these limbs could be discerned. 



Uropods with inner ramus attached on a level with the outer 

 compared with which it is not exceptionally narrow as in 

 P. suarezi, and it is more than half as long. Each ramus is 

 tipped with a tuft of setae. Telson in young rounded. 



Dimensions about 6 mm. in length by 2-75 mm. in breadth. 



Locality. On damp decaying wood close to swamp, Kambwe 

 near Karonga, 



For the colouiing comment will conveniently be made in 

 comparison with the next species, 



Anchiphiloscia cunningtoni, sp. n. (Plate XXVIL, B.) 

 This species is in striking agreement with the preceding in 

 regard to the antennas and all the minute details of the mouth- 

 organs, but the head is wider and the hinder segments of the 

 perjeon have their postero-lateral angles moi-e acute, the hind 



