Ctent'forin Spiders of Cet/lon^ IhirmaJij (.fcc. 351 



patisfird lliat ojic cnimot restore Tliorell's f^enns Dolopcrun for 

 llie J'iasterii As^iatic ibrnis, as 1 liad at first liopcd. Thorcll 

 liiinsclf jegartls Dolopwus as a synojiym of Tluilassius. 



Genus Thalassius, E. Sim., 1885. 



Dxarjnosis. — Legs 4, 2, 1, 3, or 4 (2, 1) 3. Tarsal claws 3. 

 Superiors long, armed beneatii with 9 long denticles, inferior 

 claw -with one or two minute teeth. Sternum as broad as 

 long, circular, emarginate opiositc coxa3 and ])ointed behind. 

 Labium lunger than broad, more than half the length of 

 maxilla*. !Maxilh\i attenuate at base, enlarged at apex. 

 Lower margin of fang-groove with 3 stout teeth, suj)erior 

 margin with 2. A single small tooth lies on the floor of the 

 lang-groove near lower margin nearly opposite the third 

 tooth. Eyes in three rows (or four if one separates those of 

 the posterior row) — 2, 2, 4. Ocular quadrangle as broad as 

 lojig or slightly longer than broad, broader in front, narrower 

 behind. Anterior centrals larger (one fourth) than posterior 

 centrals or subequal, half a diameter apart; posterior centrals 

 I diameter apart. Lateral anteriors smaller (half) than ante- 

 rior centrals, f a diameter from the latter, rather more from 

 posterior centrals, 1 diameter from posterior laterals. Eyes 

 of posterior row subequal ; centrals nearer together, forming a 

 slightly recurving line. Lateral posteriors 1 diameter from 

 central posteriors. Clypeus equal to length of ocular quad- 

 rangle, sometimes more. Femora with numerous spines. 

 Patella? i., ii., iii., iv. with two lateral basal and one central 

 apical spine. TibifB i. and ii. with 2 — 2 — 2 — 2 spines be- 

 neath, last pair apical ; 1 — 1 lateral spines on each side in 

 apical half, 1 — 1 dorsal spines basal and apical. Protarsi i. 

 and ii. 2 — 2 — 2 — 2 ventral and 1 central apical spine, 2 — 2 

 lateral spines in basal half. Tibiai and protarsi iii. and iv. 

 somewhat similarly but more irregularly spinulate. 



No true seopula beneath protarsi or tarsi, but a band of 

 setse and fine short hairs mingled. 



A single palpal claw with 3-4 short blunt denticles. 



Thalassius Simont, sp. n., ? ad. 

 (Ph IV. figs. 18, 21.) 



Type in coll. Brit. Mus. Nat. Hist. 



Hah. Borneo. 



? ad. — Tot. len. 23 mm., carap. lO'O X 8*75 ; legs i. 56, 

 ii. 58'5, iii. 53, iv. 60 ; pat.+ tib. i. and ii. equal 19'5, iii. 17, 

 iv. 19*5; prot. i. and ii. 12*5, iii. 12'5, iv. 15'5. 



