cbambxrun: htbiopoda of the iustbaua^ region. L53 



415. PlLOCHILUS PALLIDIOR, s|>. now 



Type. M. C. Z. 4,605. Fijis: Nadarivatu (W, M. Mann). 



Contrasting with the preceding species in having the tergites light 

 brown instead of « l<*< ' j >, almost black, brown. The lighter markings 

 are as in the other species but Lighter fulvous in color. 



The head is testaceous instead of chestnut, the first articles of 



antennae the same color, the fifth and sixth white as USUal. 



It is in proportion to length a decidedly narrower species. 



Tin* face is densely clothed with straight, moderately long hairs 

 which extend up from cl\ pens to vertex. 



The crenations or free edges of the marginal lobes are somewhat 

 higher; on the median portion are much more prominent, of low coni- 

 cal form, instead of being very low and depressed. 



On the other tergites the large seriate tubercles are arranged as in 

 the other species; on the anterior plates particularly they are rather 

 more conspicuous, and more conical in form. The serrations of the 

 keels in general the same. A readily noticed difference is in the 

 outermost large tooth on the caudal margin of each keel, this lying 

 nearer to the lateral edge, with the excision between it and the caudo- 

 lateral tooth or lobe more acute, the ectal side of the caudal tooth 

 running a little ectad of caudad instead of clearly mesocaudad as it 

 does in cyncphor. The caudal margin of the tergites between the 

 keels is more or less clearly crenate even in the first tergites instead 

 of remaining straight until the posterior region is reached. The large 

 paired dorsal tubercles of the anal tergite are obviously larger than in 

 P. cyncphor while the corresponding marginal tubercles are smaller; 

 the cauda beyond the principal tubercles shorter and narrower, whit- 

 ish in color, its tubercles less prominent. 



Length, 15 mm.; w T idth, 2.1 mm. 



Atopodesmus, gen. nov. 



Composed of head and nineteen segments. Antennae short and 

 clavate. First tergite nearly completely covering the head from 

 above; wholly lacking any distinct lobate border. Characterized 

 especially by having the second tergite much wider than the first and 

 also exceeding the following ones, widely expanded at each end with 

 the anterior corner overlapping the first tergite and the posterior 

 extension in the coiled animal extending far beneath the third keels; 

 lateral margin with numerous crenulations. Succeeding keels much 



