HOPLOPHORA.—NICOLETIELLA. 27 
Subfam. APTEROGASTERINA. 
[Michael, British Oribatide, i. p. 64 (1884).] 
HOPLOPHORA. 
[C. L. Koch, Uebers. d. Arachnidensyst. Heft iii. p. 116 (1842).] 
1. Hoplophora retalteca, sp.n. (Tab. XV. figg. 4, 4 a-4f') 
Corpus ovatum, convexum, nitidum, glabrum, colore clarius rufo-fusco. Cephalothorax conicus, declivus, 
mobilis, antice rotundato-acutus. Notogastri latera post cephalothoracem late excisa. Mandibuli crass, 
dentibus quatuor in quoque brachio armate. Dens secundus in brachio fixo extra seriem insertus. 
Maxillarum margo anterior incisuris minus profundis in dentes tres latos divisus. Pedes breves, tarsus 
unguibus duobus validis, tertio angustiore armatus. 
Long. corp. 1 millim. 
Hab. Guatemaa, Retalhuleu (Stol/). 
Body ovoid, arched, shining, without any hairs on its dorsal surface, reddish-brown. 
Cephalothorax conical, broadly angular towards its anterior ends, the side margins 
somewhat rounded. Sides of the notogaster behind the cephalothorax slightly exca- 
vated. Mandibles large, with four teeth on each branch of the chele; second tooth 
out of the row on the blade of the chela. Two longitudinal short fissures divide the 
maxilla into three broad teeth. Legs short; tarsus bearing three claws, two of which 
are stronger than the other. 
Found during the rainy season on dead wood in damp places in the forests near 
Retalhuleu. 
Note.—I reproduce the drawing and description of the tarsus, as I made them when 
in Retalhuleu. But still I do not feel quite sure about the correctness of what I saw 
eleven years ago, as the tarsus of the European Hoplophora nitens bears only one 
claw. Having no preserved specimens of H. retalteca at my disposal at the present 
time I cannot decide the question. 
Fam. NICOLETIELLIDZ. 
NICOLETIELLA. 
Nicoletia, G. Canestrini & F. Fanzago, Intorno agli Acari Italiani, p. 52 (1877). 
Nicoletiella, R. Canestrini, Osserv. sulla Nicoletiella cornuta, p. 6 (1882). 
1. Nicoletiella neotropica, sp.n. (Lab. XVI. figg. 1, 1 a-1¢.) 
Corpus oblongo-ovatum, convexum, antice attenuatum, margine anteriore bicornuto, colore sanguineo. Super- 
ficies dorsualis setis sparsis induta. Dorsi cuticula foveolis microscopicis rotundis vel hexagonis, que inter- 
stitiis transverse striolatis separate: sunt, regulariter et dense punctulata. Pedes antici ceteris longiores 
atque crassiores, ceteri graciles ; pedes postici secundis atque tertiis paullulum longiores. Tarsi primi 
E* 2 
