6 ACARIDEA. 
(small plantations of Opuntia, upon which the cochineal insects are reared) round the 
city of Antigua. It runs busily about in the open sunshine. 
RHYNCHOLOPHUS. 
Rhyncholophus, Dugés, Rech. s. Vordre d. Acar. en gén. et la fam. des Tromb. en part., Prem. 
Mémoire, in Ann. des Sciences nat., Zool. i. p. 15 (1834). 
1. Rhyncholophus erinaceus, sp. n. (Lab. IV. figg. 2-2 d.) 
Corpus oblongum, convexum ; humeris rotundatis, paullulum prominentibus ; cuticula molli, non refulgente, ex 
fusco cinerea, pilis clavatulis brevibus, quadrifidis, nigris hand sparse induta; subtus macula alba prope 
anum. Palpi, mandibule atque pedes rufescentes, piligeri. Palpi articulo extremo longo, curvo ; appendi- 
cula longa, lanceolata atque apice rotundata. Epimera primi et secundi pedum paris utriusque lateris in 
medio corpore valde approximata, per labium fere contigua, ab epimeris posteriorum parium valde dis- 
tantia ; margo corporis anterior desuper inspicienti globulum piligerum prebens. 
Long. 3, lat. 1:5 millim. 
Hab. Guatemata, Antigua (Stol/). 
Body oblong, not depressed, with somewhat prominent shoulders, the skin not 
shining, greyish-brown ; with short, black, quadrifid, thick and slightly curved hairs, 
which are not very thickly set, so that the skin can be easily seen between them; the 
under surface bearing a whitish spot in the anal region. The palpi, mandibles, 
and legs are reddish-brown, and bear short, black, appressed, obtuse, quadrifid hairs 
on their upper surface, and longer, imperceptibly pinnate, acute sete beneath. The 
fourth joint of the palpi forms a curved tooth, and bears long sete like the preceding 
joints and the appendicula; the latter is obtusely lanceolate in form. When looked at 
from above, the anterior margin of the body appears to be prolonged into a reddish globe, 
the latter bearing some long black hairs. ‘The apex of the labium forms a sort of flat 
cup with many marginal fringes. 
Two specimens, both of which were found under stones in the neighbourhood of 
Antigua. 
Fam, ACTINEDIDA. 
Acaride tracheate corpore subtriangulari angulis rotundatis, brevi, minime longiore quam latiore, integro, 
Oculi duo laterales, a margine corporis anteriore valde distantes, facillime perspicui. Cuticula mollis, 
setis rarioribus acutis, subtilissime pinnatis, induta. Pedes laterales, articulorum senorum, epimeris 
pedum in quoque latere valde approximatis.  Pedes inter se fere equales longitudines, setis raris erectis 
et hirsutie brevi, spissa, appressa induti. Articulus pedum tarsalis gracilescens, acute terminans, ungui- 
bus duobus curvis armatus ; ad eorum basin unguis tertius spurius setulosus insertus est. Palpi quater- 
norum articulorum ; articulus basalis brevis, secundus longus, quam ceteri crassior, subcylindricus, tertius 
previssimus, ad apicem interne dentibus trinis, rectis, obtusis armatus, ultimus quam secundus brevior atque 
angustior, apice rotundatus, setiger. Mandibule longe, ex basi lata sensim apicem versus gracilescentes, 
in apice unguicula falciformi armate. Inter mandibularum bases in utroque latere corporis nascitur 
organum longum tubuliforme, angustum, in apice clavatum, quod horizontaliter palpi basin transgrediens 
marginem frontalem juxta palporum basin ita superat, ut a desupra inspicienti distincte et facillime 
discernatur. Epistoma triangulare, acutum, apice bifido. 
