< II \Miii KU\ : IfYBIOPODA Of rm AUSTRALIAN REGION. 15 



32. OrosnGMUS \\<.i stk i;i's Pocock. 



Willcv's Zool. results, L898, pt. l, p. 62. 1 



Lo< \i i n . New Britain. 1 



:;:;. Otostiomub pkoponkxs, sp. dov. 



TYPE.— M. ('. Z, 2,166. PARATYPE .— M. C. Z. 2,107. Solo- 

 mons: Fulakora, Wainoni Bay (W. M. Mann). 



Color of type above dark olive, th<* first one and several of the last 

 plates of reddish cast as some of the others may be laterally. First 

 two joints of legs brownish, the other joints a lighter olive. In a 

 paratype the legs are a lighter green. 



Dorsal plates hearing numerous minute points especially in the 

 posterior region, the points finely tipped, the surface under the micro- 

 scope appearing minutely scabrous. Antennae long, composed of 

 twenty-two articles of which only the first two are glabrous. Dorsal 

 plates from the sixth inclusive on with complete paired sulci, those 

 from the eleventh caudad margined. Posterior plates in front of the 

 nineteenth with one or two very low, broad keels on each side just mesad 

 of the margining sulcus. Last tergite with a median longitudinal 

 depression in front of the posterior angle, this becoming shallower 

 on anterior part of plate. Prosternal plates each with three large 

 teeth of which the tw r o most mesal are partially fused and the inner- 

 most bears on its mesal edge a minute fourth tooth. Paired longi- 

 tudinal sulci of sternites absent or evident only across anterior border 

 in type; in a paratype on some plates of the posterior region the sulci 

 extend well toward the middle. Sternites under the lens showing a 

 moderate number of laterally compressed elevations or tubercles. 

 Last ventral plate narrowed caudad; caudal margin incurved. Coxo- 

 pleural process ending in two points, with one dorsal spine and two 

 lateral ones on caudal margin of coxopleurae. Tarsi of legs to seventh 

 pair inclusive with two tarsal spines, others to twentieth inclusive 

 with one spine. Femur of anal legs ventrally toward ectal side with 

 four spines, tow r ard inner edge with three and on mesal surface with 

 about seven or eight, a small one at mesodistal angle above. 



Length, 65 mm. 



34. Otostigmus completus, sp. now 



Type.— M. C. Z. 2,109. Solomons: Auki (W. M. Mann). 

 General color olive, with head somew 7 hat more brow r nish and legs 

 more greenish. 



