BULLETIN MUSEUM 01 COMPARATIVE IOOLOOT. 



terior regions the impression u ■ simple linear furrow, the arms 

 being quite obliterated. Paired dorsal sulci beginning on th»- batal 

 plate and present on tergitea from there caudad. Last ventral plate 

 rather broad, trapesiform, the caudal margin rounded. Coxopleurae 

 scarcely encroaching on preceding segment; port*- fine and pumerons. 



Last dorsal plate long and narrow, caudally rounded. 

 Pain ol legs, forty-nine. 

 Length, about -7 inin. 



137, MeCISTOCEPHALUB EHYTHBOCEP8, -p. nov. 



Type.— M. C. Z. 1,906. Paratype.— M. C. Z. 1,907, 1,914. 

 Fijis: Xadarivatu. Levuka W, M. Mann . 



As compared with M. ntgricept or ptmctifrons this is I decidedly 

 more -lender species of nearly uniform width over the anterior half, 

 the posterior region attenuated. It is a much paler species, the body 

 in general being uniform tight yellow, the head and presternum with 

 prehensors reddish, the first tergite paler. The head with a pair of 

 short longitudinal sulci in front of caudal margin, the plate in front 

 of this with weak puncta not forming well-marked lines as in nigriccps. 

 Labrum with mesa! angles of lateral pieces rounded, not at all produced, 

 their margins wholly smooth. Dorsal plates clearly bisulcate from 

 the first inclusive caudad. None roughened, tuberculate or scabrous. 

 Median sulcus of ventral plates sharply defined, bifurcation anteriorly 

 obscure as in nigricepa Last ventral plate proportionately wider 

 than in nigriceps, not laterally emarginate, surface of uniform char- 

 acter, caudal margin rounded. Last tergite proportionately narrower 

 than in nigriceps. not shield-shaped, sides more weakly convex. Xon- 

 porigerous ventral region of coxopleurae wide, oblanceolate. 



Pairs of legs, fifty-one. 



Length, to 31 mm. 



138. Mecistocephalus kurandanub, sp. nov. 



Type.— M. C. Z. 2,06a Queensland: Kuranda (Win. M. 

 Wheeler . 



This species is easily distinguished from all others known in the 

 character of the labrum. The lateral pieces have the margin wholly 

 lacking cilia; but the mesal end of each is conspicuously crenate, the 

 most mesal of the seven or eight crenations of each piece being more 



