MYRIOPODA FROM BURMA 791 



narrowed distally, the anterior and posterior borders being almost 

 straight and parallel, the lateral margin at right angles to them 

 both, the anterior margin without a basal slioulder, unarmed, 

 posterior border with a single low tooth, the lateral borders of 

 the pore bearing keels quadrilobate , of the others trilobate. 

 Upper surface of the dorsum furnished with three transverse 

 ridges, an anterior, a median, and a posterior, separated by 

 grooves and formed by the fusion of tubercles ; quite at the 

 posterior end of the body, the tubercles of the posterior row 

 project beyond the level of the tergite. Pores conspicuous, on 

 the upper surface in the posterior half of the keel, but well 

 removed from and about equidistant from the lateral and poste- 

 rior borders. Lower surface of keels with short sulci running 

 from the marginal notches. Caudal process projecting slightly 

 beyond the keels of the 15"', triangular, truncate, with a late- 

 ral tubercle on each side. Anal sternite minute triangular. 

 Sternal areas deeply sulcate transversely, of normal width. 



Legs with trochanter about as long as the femur. 



Length 10 mm.; width 2. 



A single female specimen obtained by Sig. L. Fea at Palon 

 in Pegu. 



The discovery of this single specimen is of the greatest inte- 

 rest. The species that it represents differs from all the species 

 referred to Cryptodesmiis that have been established of late years 

 in the possession of the repugnatorial pores. In this character 

 it agrees with the type species of Cryptodesmiis, C. alatus of 

 Peters, which this author declared to be provided with these 

 organs. But they are said to be situated in the anterior half 

 of the upper surface of the keels and not in the posterior half 

 as in the Burmese species, which I propose consequently to 

 regard as the type of a new genus Cryptodesmoides. 



