MYRIOPODA FROM BURMA 387 



Body slender and elong-ate nearly cylindrical , composed of 85 

 segments. Somites thickly hairy and granular ; the coUum 

 with its anterior .border widely and evenly emarginate ; the 

 rest of the somites lightly convex above, without granules and 

 without keels, the posterior half of the tergal piece higher than 

 tlie rest; the suture between the pleurae and terga distinct and 

 marked by a distinct notch along the posterior edge ; anal ter- 

 gite bluntly rounded posteriorly. 



Length about 16 mm. 



Two specimens (one imperfect) from Mt, Mooleyit. 



Family CHORDEUMIDAE. 

 Meterocliordeuma, g. nov. 



Body composed of 32 segments. Each segment bearing late- 

 rally a large depressed keel, like that of Cryptoclesmus amongst 

 the Polydesmidae. 



Of the known genera of Chordeumidae, Heterochordeuma with 

 its large depressed keels seems to come nearest to Rhiscosoma 

 of Latzel. Unfortunately the latter was based upon an immature 

 form without its full complement of somites. Probably however, 

 with all the other European genera it will prove to have but 

 30, this number having been hitherto looked upon at characte- 

 ristic of the family. Heterochordeuma is thus remarkable as pos- 

 sessing 32. 



2 Heterocliorcletiiiia doriae, sp. n. 



Colon?' a dull uniform dark brown , paler beneath , head 

 black ; antennae with proximal half black, distal flavous. 



Body wide, attenuated anteriorly and posteriorly. Head thickly 

 hairy below, smooth and polished above, although somewhat 

 sparsely punctured. Eyes composed of 11 ocelli , arranged in 

 four transverse rows ; the ocelli round and not contiguous. 

 Antennae moderately long, the third and fifth segments much 

 the longest. 



First lergite about twice as wide as the head, as wide as the 



