1879.) A New Genus of Minute Pauropod Myriapods. 611 
in section with very thin walls and without superficial sculp- 
ture. Head not concealed by the forward and lateral pro- 
duction of an anterior segment. Legs not concealed. White. 
With eyes. 
1. Pauropus huxleyi, Lubbock, 1. c. 
Hyaline body of the outer ramus of the antennz sessile. 
Length s4 inch. Hab. England and E. Penna. 
2. P. lubbocktii, Packard, Proc. Bos. Soc. Nat. His., XIII, p. 409. 
‘Hyaline body pedunculate but shorter than in the next. 
Length, .o3 inch. Hab. Salem (Packard) and Chelsea 
(Walker), Mass. 
3. P. pedunculatus, Lubbock, |. c. 
Hyaline body on a long peduncle. Length +% inch. 
Hab. England. . 
II. EuRYPAUROPODID&. 
Segments six, composed dorsally of a thick plate of light- 
brown chitin, greatly depressed, three times as wide as high, 
spinose, tuberculate and reticulate on their upper surfaces ; 
margins serrate. Head concealed by the hood-like anterior 
production of the first body segment. Legs hidden beneath 
the lateral expansions of the body segments. Reddish. 
Without eyes. 
1. Eurypauropus spinosus Ryder, Proc. Acad. Nat. Sci. 
Phila., 1879, p. 139, and ibid. p. 164. Length yy inch’ 
Hab. in Fairmount Park, E. Penna. 
The discovery of additional species may now be awaited with 
some confidence, since the distribution of those already known 
has been so considerably extended by Dr. Packard and myself. 
Sharp eyes and patient search in quest of these and kindred 
minute forms will now reward the student with striking new and 
little known species much more quickly than by collecting the 
showy and conspicuous insect fauna of his neighborhood. It 
was probably the keen-sightedness developed by the experience 
of Sir John Lubbock in patiently collecting the Thysanura that 
led him to detect and scrutinize Pauropus, leading to its recogni- 
tion as an important new type. } 
EXPLANATION OF THE PLATE. 
Fic. 1—Larva of Eurypauropus spinosus, enlarged fifty times. 
Fic. 1.—Antenna of adult, enlarged two hundred and fifty times. 
Fic, 111.—Adult from below, enlarged fifty times. 
