BDELLA.—SCYPHIUS. 17 
of the fourth joint of the palpi; it differs from the adult Rhyncholophi by the general 
shape of the body, the insertion of the palpi, the configuration of the mandibles and 
tarsi, and the finely wrinked skin. 
Fam. EUPODIDZ. 
(Kramer, Ueber Milben, Zeitschr. ges. Naturw. liv. p. 448 (1881).] 
SCYPHIUS*. 
Scyphius, C. L. Koch, Uebers. d. Arachnidensyst. Heft iii. Abth. 2, p. 62 (1837); Kramer, 1. ec. 
p- 449 (1881). 
1. Scyphius maniacus, sp. n. (Tab. VI. figg. 2-2 d.) 
Corpus oblongum, antice acutum, postice rotundatum, supra convexulum, albidum, semipellucidum, leve, setis 
raris in pedibus et abdomine indutum; humeri late rotundati, post eos abdomen coarctatum. Pedum 
primum par ceteris longius, par secundum brevius. Pedes corporis margini laterali inserti. Pseudo- 
cephalo-thorax triangularis, ab abdomine per sulcum transversum separatum. Oculi nulli. Palpi longi, 
eorum articulus extremus penultimo longior, cylindricus, basi coarctatus, apice rotundatus, setis pluribus 
rectis tactilibus armatus. Mandibule epistomium superantes, chelifers, chelarum articulus fixus curvus, 
dente acuto armatus, ad basin supra setulam gerens; articulus mobilis falciformis, acutus, angustus, basi 
solum atque extremo apice articulum fixum tangens. Pedum articuli extremi longi, versus apicem graci- 
lescentes, unguiculis curvis, unguicula tertia spuria, recta, setulosa armati. 
Long. 0°75 millim. 
Hab. GvuateMaLa, Retalhuleu (Séol/). 
Body oblong, rather acute towards the frontal end, rounded behind, convex, soft- 
skinned, semitransparent, whitish, smooth, with a few rows of stiff, minutely pinnate 
hairs on its back. Abdomen a little attenuated behind the rounded and not very 
prominent shoulders. Legs inserted on the sides of the body, the first pair longer, the 
second pair shorter, than the rest; epimera of pairs 1 and 2 separated by an interspace 
from those of pairs 3 and 4; joints cylindrical, except the sixth, the latter gradually 
attenuated towards the apical end, and bearing two curved claws and an erect brush- 
like false claw. Legs and palpi with several squarrose bristles. Palpi long, their last 
joint rounded at the end, and bearing several long, stiff sete. Mandibles short, but 
visible from above; the fixed branch of the chele ending in a short curved tooth, which 
bears a short seta of about the same length at its base outside; the movable branch 
strongly curved, falciform, narrow, and touching the tooth of the immovable branch 
only with its acute point; none of the branches bear any denticulations. Hyes 
wanting. 
This species lives in the forests of the “tierra caliente” near Retalhuleu among the 
fallen leaves. It runs in a very quick but interrupted erratic manner, and is rather 
difficult to capture. ‘The softness of its skin renders microscopical examination some- 
what difficult. 
* Preoccupied in Pisces (Risso, 1826), 
BIOL. CENTR.-AMER., Arachn. Acar., Warch 1890. p* 
