1896.] SPIDMRS FB.OM. THE LOWEB AMAZONS. 727 



each emittiug from its summifc a single, long, fine bacillLforui hair. 

 When first captured these were perfect ; they have since, however, 

 become effaced, except at the base of the abdomen. 



Ocular tumulus tuberculiform, globular. Anterior central eyes 

 slightly smaller than anterior laterals ; a little more thau the radius 

 apart, nearly one diameter from anterior laterals. Anterior row 

 straight. Posterior centrals very small, one diameter from anterior, 

 centrals, almost in contact with posterior laterals ; the latter 

 ellipsoidal, one quarter of its axis from anterior laterals, which is 

 greater than the diameter of either of the anterior central or 

 anterior lateral eyes. 



Sternum broader than long ; sigilla encrusted and scarcely 

 visible. Labium quadrate, apex transversely studded with numerous 

 minute cusps. Con-a of pedipalp produced at anterior apical angle 

 into a long spur-like prominence ; its anterior surface studded with 

 miuute cusps, clustered more closely towards basal anterior angle ; 

 the joint is stouter, longer, and more thickly fringed with rUfous 

 hair than in Paratropis papilligera, 5 . 



Legs. Tarsi and protarsi i. and ii. furnished beneath with 

 two series of paired teeth, each pair obliquely situated ; but their 

 position is not absolutely regular. Tarsi and protarsi iii. and iv., 

 with two series of long stout spines beneath. 



Tarsal clavjs. Three on tarsi i. and ii., superiors with single 

 denticle towards base ; inferior claw present. Tarsi iii. and iv, 

 with two superior claws, each with a single denticle towards base, 

 inferior claw obliterated. Glandular tubercles on tibise. Protarsi 

 and tarsi similar in position to those of P. papilligera, 5 . 



Sjnnners, two only ; posterior pair less than one-half the length 

 of abdomen ; basal joints equal in length, apical joint one-fourth 

 longer than basal joint. Anterior pair of spinners obsolete. 



Mandibles similar to those of P. papilligera in character, but the 

 two rows of teeth with which the fang-groove is furnished differ 

 somewhat in number and arrangement. Outer row containing 7 

 stout teeth ; inner row containing 14 teeth of fenlaller size. Tooth 

 no. 7 in outer row stands opposite tooth no. 14 of the inner row, 

 whereas in P. papilligera it stands opposite no. 12 of the inner 

 row. 



Comparative measurements in millimetres. — 5 . Carap. 6"75 long., 

 6 lat. Abd. 7"5 long., 5-75 lat. Ceph. area 5-25 long. Stern. 

 3 long., 3'75 lat. Coxa of pedipalp 3 long., 1"6 lat. Pedes, long. 

 i. 20— ii. 15— iii. 13— iv. 20. Artl. i. long. 3—1—5—2—4—3— 

 1-75; iv. 2-5- 1-75— 5— 2— 4— 4-5— 2. Postr. mam. 3 long.; 

 artl. 1 — 1 — 1-25. Antr. mam. absent. Mandib. 3 long. 



A single female, agreeing almost entirely in general appearance 

 with the female of Paratropis papilligera, was taken under a log in 

 the damp forest at Breves, on the Lov\ er Amazons, near the Island 

 of Marajo. 



