AMBLYOMMA. 23 
colour of the plate. The rostrum and palpi are light chestnut-brown ; the fourth joint 
of the palpi is centrally inserted. The mandibular hooks, three in number, are of a 
shining amber-yellow at the apex; the second hook of the first branch is bidentate. 
The maxillary teeth are transparent, uniformly white, simple, scaly, moderately erect. 
The stigmatic plate is small, its shape between triangular and obliquely semilunar ; 
the stigmatic fissure short, claviform, the stigma proper small and arcuate. Tach of 
the anal valvule bears five bristles. The genital fissure, which is comparatively large, 
lies in a polygonal cavity and is enclosed by a sort of swollen lip. Legs reddish- 
brown, whitish at the apex of the joints. 
Female unknown. 
The figures and description are taken from a dried specimen obtained in Nicaragua 
by Mr. Janson. 
4, Amblyomma sabanera, sp. n. (Tab. XIV. figg. 2, 2-27, 2.) 
3 latet. 
Q. Corpus ovatum, depressum. Scutum occipitale nitidum, sat dense et haud profunde punctatum, colore ex 
fusco nigrescente, secundum marginem humeralem utriusque lateris macula lineari irregulari albida, que 
in exemplo desiccato difficulter observatur. Scutum frontale nigro-fuscum, foveis frontalibus profundis, 
ovatis, antice angulatim protractis. Abdomen haud nitens, crasse punctatum ; superficies dorsualis sulcis 
longitudinalibus latis iniqua. Rostrum et palpi fusci, clariores apicem versus. Palporum articulus 
quartus in tertii apice excavato centraliter insertus. Arca mandibularis hamulis quinque in ramos duos 
dispositis: hamulus secundus primi rami bidentatus, hamulus primus secundi rami brevissimus. Dentes 
maxillares acuti, sat dense conferti, in medio apicem versus torulo succineo incrassati. Lamina stigmatica 
triangularis, angulis rotundatis, fissura stigmatica irregulariter claviformis, lata; rima stigmatis irregu- 
lariter arcuata. Valvula analis utriusque lateris setis quinque armata. Apertura genitalis margine 
posteriore recto, laterali flexuose convexo; inter rugulas integumenti parietis anterioris aperture genitalis 
toruli lineares recti observantur. Pedes clarius fusco-rufi, coxe dentibus duobus respicientibus armati. 
Long. corp. 7 millim. ; scuti occipitalis 2 millim. ; lat. corp. 5 millim. 
Hab. Guatemata, Retalhuleu (Sto//). 
Male unknown. Body of the female oval, depressed. Occipital plate shining, 
punctate, brownish-black, with an irregular whitish stripe on the shoulder-margin, 
which almost disappears after desiccation. Frontal plate brownish, the two frontal 
holes deep and oblong. Abdomen not shining, rather coarsely punctate, with some 
broad longitudinal furrows on its upper surface. Rostrum and palpi brown, lighter 
towards the apex; the fourth joint of the palpi centrally inserted on the third one, 
which has its apex excavated. Five mandibular hooks arranged on two branches; the 
second hook of the first branch bidentate, the first one of the second branch very short 
and rudimentary. Maxillary teeth acute, with an amber-yellow longitudinal swelling on 
the middle, their margin double-bordered. The stigmatic plate is triangular with 
rounded angles; the stigmatic fissure irregularly claviform, comparatively broad, the 
stigma proper moderately arcuate. ach anal valvula bears five bristles. The posterior 
margin of the genital orifice is straight, transverse, its side margin convex, arcuate; a 
