178 
Psyche 
[August 
A NEW JAVAN CHILOPOD OF THE GENUS MECIS- 
TOCEPHALUS. 
By Balph V. Chamberlin. 
Museum of Comparative Zoology, Cambridge, Mass. 
At Honolulu, Hawaii, a number of millipeds and centipeds 
were taken on Mar. 8, 1922, from soil of a shipment of plants 
from the Botanical Gardens of Buitenzorg, Java. Among these 
specimens, which were submitted to the writer for identification, 
were numerous specimens, mostly young, of the new species of 
Mecistocephalus described below. This form belongs to the 
lesser group of species in which the sternal impressions are not 
furcate anteriorly, and apparently has its nearest relatives in M. 
apator Chamberlin and M. wonticolens Chamberlin, previously 
described from the same region. Two other chilopods were in 
the collection, Otostigmus fece Pocock being represented by one 
specimen, and a species of Lcmiydes, not in identifiable condition, 
by another. Two diplopods were represented, Trigoniidus 
lumbricinus (Gerstsecker) and Oxidus gracilis (Koch), the latter 
being a species long ago introduced into this country and Europe 
and often known as “the hot-house milliped.” 
Mecistocephalus tridens sp. nov. 
Head and prehensorial segment chestnut, the remaining 
parts yellow. 
Head wider than long in the ratio 14:9. Widest anteriorly 
and narrowing caudad, more abruptly so over caudal fourth of 
length, the general narrowing less marked than in apator. An- 
terior margin nearly straight, much as in apator. 
Clypeal region with no anterior, non-areolated areas. 
With six principal setse arranged as in monticolens, the sublateral 
teeth being also nearly of same from as in that species. 
General outline of labrum as in moydicolens, but the median 
piece narrower and about as wide behind as in front with the 
