2 ACARIDEA. 
of the other pairs; the tarsi of the second, third, and fourth pairs bearing long 
pinnate hairs. Palpi long, extending far beyond the front margin of the body ; covered 
with velvety, pinnate hairs, which on the surface of the appendicula form long fringes. 
The fusiform mandibles are terminated by a broad, falciform, sharply pointed claw, 
which is much shorter than the mandible itself. 
The description of this beautiful species is drawn from two dried and pinned speci- 
mens, which were collected by Mr. Forrer. | 
2, Trombidium hispidum, sp. n. (Tab. II. figg. 1-1 d.) 
Corpus ovato-trigonum, margine anteriori in apicem trigonum protracto; immaculatum, tomentoso-hirsutum, 
uniformiter coccineum ; pilis rarioribus, disseminatis, elongatis, pinnatis, ex tomento exsertis indutum, 
precipue in regione humerali et versus marginem posteriorem. Pedes ineequales, in paribus 1° et 4° lon- 
giores ; tarsus primi paris fusiformis, unguibus minimis. Palpi exserti, pilis elongatis induti ; appendicula 
pyriformi, latiuscula. Mandibule breves, ungue elongato, angusto, falciformi, subtilissime denticulato, 
apice obtusulo. 
Long. 2, lat. 1 millim. 
Hab. Guatemata, Retalhuleu (Séol?). 
Body triangular, its anterior margin protracted into a sort of triangular clypeus ; 
colour uniform, scarlet. Body and legs thickly covered with a short velvety pile, out 
of which spring long, disseminate, pinnate, and slightly curved hairs, which on the 
shoulders and towards the end of the body are longer and more thickly set than on the 
remaining parts of the dorsum. The legs are comparatively longer than in 7. mexicanum, 
and without brushes on the lower surface. The front tarsus is fusiform, its claws con- 
siderably smaller than in the others; the latter are truncate at their top, and bear 
pinnate hairs, each of which is inserted on an elevation of the integument. The palpi 
bear elongate, pinnate hairs, which on the second and third joints are arranged in a 
row ; the appendicula is broader than in 7. mexicanum and bears much shorter hairs. 
Mandibles short, with a rather cylindrical body, and a long, narrow, slightly curved 
claw ; the concave edge of the latter is, almost imperceptibly, denticulated. 
The description and figures are made from living specimens, which were found run- 
ning amongst dead leaves in the cacao-plantations near Retalhuleu. 
3. Trombidium nasutum, sp. n. (Tab. III. figg. 1-1 g.) 
Corpus fere rhomboideum, depressulum, postice rotundatum, latitudinem maximam inter coxas secundi et 
tertii pedum paris exhibens, coccineum, tomentoso-hirsutulum ; tomentum e pilis brevibus quadrifidis 
constans ; pars cephalothoracis frontalis in apicem carnosum producta, clypei instar bases palporum obte- 
gens; cox lateribus corporis infixe; utriusque lateris coxe anteriores inter se valde approximate, 
ab coxis posterioribus (inter se approximatis) ejusdem lateris valde distantes ; dorsum impressiones plures 
transversales exhibens. Primum et quartum pedum par secundo et tertio paullulum longiora; tarsus 
primi paris pedum fusiformis, unguibus duobus minimis armatus. Palpi marginem clypei superantes ; 
appendicula lanceolata, setas longiores pinnatas gerente. Mandibule breves, falci brevi, lata, intus 
subtilissime denticulata armate. 
Long. 1, lat. 0°5 millim. 
Hab. Guatema.a, Retalhuleu (Séol/). 
