Bd. V: ii) 
THE ACARI. 
35 
Appendix. 
Acari of the Scotch Antarctic Expedition 
by 
E-L. TROUESSART. 
Paris. 
Penthalodes intermedius nov. spec. 
Shape oval, the sides not parallel; céphalothorax not demarcated from the ab- 
domen. Rostrum shaped like that of P. Belli , but the palpi and the mandibles are 
very large. The epistoma ends in a truncated point; the shoulders not marked- 
rounded. No collarshaped plate, only a thickening of the cuticle at the base of 
the rostrum. 
The shields bear a great resemblance to those of P. villosus. 
Dorsal side. The epistomatic shield large, triangular, with rounded angles, at 
the anterior end with a large ridge, which narrows backwards and divides the sur, 
face of the shield into two oval spaces. The notogastric plate long, rectangular as 
in P. villosus. 
Ventral side. The sternal shield trapezoidal, excavated at the front margin to 
receive the camerostomum, with the coxæ projecting; the ventral shield large with 
large, quadrangular genital plate, situated further backward than in P. villosus. 
Anal aperture low, without tubercle; the hind margin of the abdomen rounded. 
The legs arranged according to their length, i, 4, 3, 2. The first pair longer than 
the body without rostrum, with an .incision between the ist and 2nd joint; 2nd 
and 3d joints fused together for 2 / 3 ; the fusion well marked; 6th joint as long as 
the 2nd (without the 3d). Feathered hairs on all the joints and at the hind margin 
of the body. No velvet hairs on the body. Length 700 (à. Breadth 350 f.i. 
Locality: South-Orkneys, Isle Laurie. In moss. 
/ 
