940 KET. O. PICKAEU CAMBEIDGE OH! A NEW ACAEIDEA2T. [DcC. 14, 



close together from the lower margin of the caput, and two others, 

 equally near together, issue on either side from near the posterior 

 end of the abdomen. Terminal tarsal claws 2, on a small claw-joint 

 and unarmed. Beneath the tarsi of the first pair of legs is • a 

 scopula. The fourth pair are much the longest and slenderest, and 

 their genua and metatarsi are furnished with a large, tolerably 

 compact brush of long, black, prominent hairs of an elongate sharp- 

 pointed kuife- or dagger-shape. 



Pal^n short : basal and humeral joints very strong ; the radial 

 joint tapers, and terminates with a nail-like claw or spine ; the 

 digital joint, which issues from near the base beneath the radial, 

 is of a clavate or racket-bat shape, and is as long or longer 

 than that joint. 



The mouth -parts are not easily traceable, closed up together as 

 they are by the basal joints of the palpi ; but thev consist of 

 maxillae, labium, and falces, above which is the rostrum or beak, 

 drawn out to an obtuse point, whence there issues a long, strougish, 

 sharp-pointed spiny process. 



Eatonia scopulifeea, sp. n. (Plate LV.) 



Adult female. Length 1| lines. 



Colour scarlet ; body slightly broader in front than behind, where 

 it is well rounded ; it is thickly clothed with short, pale, strongly 

 clavate hairs. Caput longitudinally bisected by a distinct furrow 

 from the nos(!-hke anterior extremity to the thorax, where it ends 

 in a roundish pit or fovea, in \\ hicli is a small, somewhat tuberculi- 

 form, round boss. The nose-like projection is furnished with 

 numerous obtuse and slightly clavate, spine-like, prominent hairs, 

 some lojiger, some shorter. 



The lef/s of the first three pairs are of nearly uniform length, 

 and are furnished with, (besides hairs) distinct spines at the fore 

 extremity of the metatarsi ; the fourth pair are much the longest 

 and slenderest, and the genua and metatarsi are thickly furnished 

 with long, strong, lanceolate, black hairs, forming a large brush, 

 much like those used in the cleaning of bottles. 



The eyes am small and of a reddish hue, in two groups ; those of 

 each group well separated from each other on tubercles ^A"hose bases 

 are united. 



The genital aperture consists of a longitudinal cleft on the 

 summit of a strong oval prominence underneath the anterior 

 extremity of the abdomen, between the basal joints of the first pair 

 of legs. 



Hah. Biskra, Algeria. 



A closely-allied, but I think quite distinct, species has been 

 described and figured by A. Birula from Eussian Armenia (Hor. 

 Soc. Ent. Eoss. xxvii. p. 3S8, pi. tH., 1893), under the genus 

 Rliyncholoplms. The structure, however, of these two curious 

 Acarids appears to require a new genus for their reception, and 



