BY L. HARRISON. 625 



The species has about the same proportions as otlier members 

 of the genus. The dorsal surface is wlioUy covered by six dorsal 

 shields. The first of these is strongly rounded in front, not so much 

 so behind, and covers the legless and first leg-bearing segments. 

 Tlie head hangs free below it. Its border is entire. The second 

 presents a narrower anterior portion, not so strongly chitinised, 

 and passing insensibly into the articular membrane. At one-quar- 

 ter of its length, it broadens out rectangularly, the first pair of 

 tactile hairs projecting through notches in the angles. The third, 

 fourth, and fifth plates are deeply cleft at about one-half their 

 length, the clefts of the third being a little in front, of the fifth a 

 little behind, that point. The sixth shield has the clefts far back 

 towards the posterior border, and the portion behind the clefts very 

 much narrower than that in front. The tactile setae arise from the 

 "pleurae" just within the angles of these clefts, and are of the usual 

 type, but much shorter than in Pauropus. 



The dorsal shields are devoid of spines, but have a beautifully 

 sculptured pattern. This is formed by a series of broad, raised 

 ridges, which enclose sunken areas, usually triangular, but many 

 of them irregularly quadrilateral. Where these ridges meet, there 

 is formed a rosette-like structure, consisting of a central boss, 

 separated by a circular groove from a broad raised ring in which 

 are from twelve to sixteen radially elongated depressions. The 

 enclosed depressed areas have a central irregular prominence, from 

 which run six or more, radially directed, secondary ridges, which 

 meet the primary ridges. The secondary ridges are never more 

 than one-third as wide as the primary. Posteriorly, the shields are 

 terminated by a row of rosettes; but this passes inside the lateral 

 borders, Avhich are formed by a thin, scalloped plate, divided into 

 a series of platelets by raised ridges. 



The antenna is a little remarkable. The lower ramus is a little 

 more than twice as long as its width at the base, and its flagella 

 seem to be rather upper and lower, than anterior and posterior. 

 Of these, the lower, which would correspond with the anterior in 

 Pauropus, rises from an extremely short, cylindrical process at 

 two-thirds of the length of the ramus. Beyond this point, the 



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