Bd. V: ii) 
THE ACARI. 
7 
The maxillary lobes 2-jointed, for the most part covered by the hypostoma, 
with narrow, cylindrical proximal joint, the distal joint gradually widening towards 
the middle and from thence narrowing to the conical, pointed end. Central projec- 
tions rather short, with semicircular fan-shaped fringe. 
The mandibles (PI. II, fig. 17) are very slender, with narrow chela, thus bearing 
a great resemblance to those of the genus Iphis. The lower jaw is shorter than the 
upper one, with one small terminal and two other small teeth; the upper jaw with 
large conical terminal tooth and in front of this projecting in a thin, oval and 
rounded blade. 
The palpi with five free joints, gradually narrowing towards the end; the four 
first joints of about equal length, richly provided with hairs; terminal joint shorter 
than the others, with a bundle of about 10 sharply pointed hairs. 
Locality: No. 11. One nympha. 
3. Gamasellus Racovitzai (Trt) TräGÄRDH. 
1903. Garnasus Racovitzai. Trouessart. Résultats du Voyage du S. Y. Belgica en 
1897 — 1899. Zoologie. Acariens, p. 8 — 9. PI. I, figs. 3, 3a — 3d. 
(PI. II, figs, i, 2, 10, 19, 20 & 23; text-figs, ii — 14.) 
This species was described by TROUESSART (loc. cit.) from Gerlache Strait, but 
his description is insufficient and partly incorrect. T. has not dissected the man- 
dibles of the male and has thus not seen that the long appendages he describes 
belong to the mandibles and not to the maxillary lobes or »corniculæ», a mistake 
which has induced him to refer the species to the genus Parasitas (Garnasus). 
The following additions and corrections are to be made to T:s description. 
The ambulacres I are in both sexes provided with smaller claws than those of 
the other pairs of legs and the caruncle is divided in three somewhat larger lobes. 
Ambulacres II — IV with larger claws and the caruncle divided only in two lobes. 
Tarsi II — IV ending in two small sharp projections. 
Peritremata (PI. II, fig. 19) short, the stigmata being situated near the anterior 
margin of coxæ IV, the peritremata not extending forward beyond the posterior 
margin of coxæ II. 
The shoulders are well marked. The posterior hairs of the dorsal side are 
slightly longer than the others. 
The male. 
Jugular shield very narrow, double. 
Sternal shield with the usual three pairs of hairs. Ventri-anal shield occupies 
only the median part of the belly, being as broad as the distance between the 
exterior edges of the coxæ IV. 
