UROPODA. 29 
nous, reddish-brown, widely and completely separated by a whitish membrane, the latter 
bearing several rows of small conical protrusions, on each of which is a short thorn-like 
bristle; the dorsal plate also shows several short bristles and a dense microscopical 
punctuation. The legs are slender, comparatively long; the tarsi of the first pair 
are without claws, the remaining tarsi with two slender claws. Palpi short, 5-jointed, 
simple, rather thick. Mandibles, when protracted, long and slender; the fixed 
branch of the chele is longer than the movable one, both branches being indistinctly 
and bluntly denticulated. Ventral plate rather convex, dotted with small grooves. 
One specimen, found crawling among mould under a hedge in the vicinity of Antigua, 
Guatemala. 
2. Uropoda inzequipunctata, sp.n. (Tab. XVI. figg. 3, 3 a-3 d.) 
Corpus valde depressum, oblonge ovatum, antice in apicem brevem protractum, postice late rotundatum, nitidum, 
colore coccineo. Dorsum microscopio inspicienti foveolas punctiformes sparsas ostendit, inter quas puncta 
minora numerosa, marginem versus sese accumulantia sita sunt. Pedes breves, longitudine fere equales, 
tarsi primi paris unguibus carentes. Mandibule longer, graciles; chele graciles, parve, earum brachia 
irregulariter atque subtiliter denticulata. 
Long. 0°5 millim. 
Hab. Guatemata, Retalhuleu (Stol0). 
Body flat, oblong, its anterior border forming a short acute angle, its posterior border 
broadly rounded, shining, scarlet-red; the dorsal surface shows several punctiform 
grooves and the space between them is very finely punctured by numerous microscopic 
points, which are more numerous near the borders. Legs short, almost equal in length ; 
anterior tarsi without claws, the tarsi of the remaining legs with some thorn-like spines. 
Mandibles long and slender, with small chele, the branches of which are irregularly 
denticulated. 
Found at Retalhuleu as a parasite on a coprophagous beetle (Pinotus sp.) called 
‘‘yonron ” by the inhabitants. 
3. Uropoda discus, sp.n. (Tab. XVII. figg. 4, 4-4.) 
Corpus planum, fere orbiculare, antice leviter protractum, brunneum, nitidum. Palpi breves, in animalculo 
sese moventi marginem anteriorem paullulum superantes, eorum articulus quartus tertio longior, ad apicem 
setis nec non areis verrucosis, granulatis, circumscriptis nonnullis ornatus. Pedum per primum breve, 
antenniforme, unguibus carens, ejus articulus secundus atque tertius dentibus obtusis brevibus irregulariter 
serratis, articulus ultimus setulis numerosis armatus. Mandibule longe, tenere, translucide albide ; chelis 
corneo-flavis, parvis, subtiliter denticulatis. 
Long. 0°3 millim. 
Hab. Guatemata, Retalhuleu (Stoll). 
Body flat, almost orbicular, its anterior margin slightly protracted, but round. 
Colour of the body, palpi, and legs brownish-red, shining ; mandibles white, transparent, 
their chele yellowish. Palpi rather short, their last joint showing several granulated 
