1914] Chamberlin—New Diplopod from the Galopagos Islands 89 
showing 2 (or 3) smaller lobes and the anterior margin presenting 
a corresponding number of still smaller lobes or teeth excepting 
on the second and third plates, the lobes or teeth becoming larger 
caudad. Spiraculiferous papille smooth, the dorsal. surface of 
the rest of the keels and of the remaining portion of metazonites 
densely and strongly coarsely granular and tuberculate. Caudal 
margin of metazonites between keels presenting 9 or 10 distinct 
rounded teeth or crenulations which are weak or in part obliterated 
on the plates cephalad of the sixth. Two longitudinal rows of 
large tubercles, there being in each row 3 tubercles on each metaz- 
onite, the most caudal of these being on a lobe or tooth of the caudal 
margin; tubercles increasing in size from segment to segment in 
in going caudad, the caudal ones of the eighteenth and nineteenth 
segments in particular being large and conical. Keels of the nine- 
teenth segment produced caudad so that the posterior edge is par- 
allel with long axis of body or nearly so; between these keels 4 
stout conical teeth project caudad and nearly attain level of caudal 
margin of the anal tergite when viewed from above. 
Anal tergite short, nearly concealed from above by the nineteenth 
plate. Presenting a broad, mesally notched, median lobe and on 
each side of this and farther proximad 2 conical teeth separated 
by deep incisions. 
Anal seale small; on its caudal margin presenting 2 conspicuous 
tubercles, each of which bears a long bristle. 
Sternites very narrow; longitudinally sulcate. 
Trochanters of the legs relatively very long. 
Ducts of testes opening through simple perforations on the ven- 
tral surface of swellings on the coxee of the second legs, these swell- 
ings commonly contiguous at the median line. 
Gonopods of male each presenting a mesally hollow subhemi- 
spherical basal division apparently capable of being closed against 
the corresponding lobe of the opposite gonopod. Distal division 
short and proportionately broad; distally. presenting a_ short 
process projecting caudad and a larger subfalciform anterior proc- 
ess from the caudal concave surface of which bends caudad the 
conically pointed tip of a third process which seems to be the stylus. 
Length: 9.5 to 11.5 mm.; width 2 to 2.25 mm. Locality: Gal- 
apagos Archipelago; Chatham Island (May 21, 1899). Probably 
collected by Snodgrass.) Thirteen specimens were secured. 
