ACARI 603 



to the posterior quarter of the body, rounded posteriorly. The 

 central sliield seems to hâve a smooth surface, or only 

 shallow, rminded dépressions ; in tlie single spécimen at my 

 disposai it is covered by dii't, so as to render a thorough exa- 

 mination of its surface impossible. 



Near the posterior margin it is traversed by a very narrow 

 ridge, concave anteriorly ; at the Ijack of this the surface slopes 

 steeply downwards. I liave not been able to ascertain whether 

 it is only a single ridge or really a démarcation line betwt-en 

 an anterior and a posterior central shield, as is the case in 

 Uropoda tecta, U. obnoxia Reut. and U. foraminifera Tgdh, 

 for instance. Close in front of the ridge or line there are two 

 pairs of rod-like hairs, and at the posterior margin of the pos- 

 terior shield (if that is the true interprétation of it) there is 

 a pair of similar, but smaUer, hairs. 



The marginal shields hâve a very characteristic texture, 

 consisting of shallow, oval, depressed areas, arranged in con- 

 centric rows. They bear, submarginaUy, 8 pairs of small hairs. 

 In the anterior 1/7 of the body they are fused with the central 

 shield, the anterior topofwhich is truncated, with serrated 

 margin, in which a pair of rod-like bristles is inserted. 

 . The edge of the margin al shield is hnedfor the greater part 

 of its lengthby a narrow, thin plate, which bears about 12 pairs 

 of very small hairs inserted in small incisions in the edge. Tliis 

 plate is in reahty only the edge of the coalesced peritre- 

 matic and parapodial shields of the ventral shield. 



Gnathosoma. 



Theepistomaisofthe shape tjrpical of the Uropodinae, viz. 

 narrow, ensiform, with serrated edge, and as long as the palpi. 



The mandibles Ihave not been able to see, as they were 

 completely retracted within the body, and I would hâve had 

 to dissect the body in order to get a view of them, a procédure 

 which the possession of a single spécimen did not allow. 



The hypostomatic hairs are not branched ; the first and third 

 more than twice as long as the second and fourth. Maxillary 



