DR A. WILLEY IN THE LOYALTY ISLANDS, NEW BRITAIN, ETC. 73 



Order. COLOBOGNATHA. 



Genus. Bdellotus, Cook. 



(21) Bdellotus bivittatus, sp. n. 



Head, antenuae and first segment black ; the rest of the segments black and 

 polished, but marked dorso-laterally with two parallel white bands extending from the 

 anterior to the posterior end of the body ; the median dorsal black band about as 

 wide as the lateral white bands; margins of tergites below the pores narrowly white; 

 anal somite black ; legs infuscate. 



Number of segments 65. 



Length 11 mm., width <S mm. 



Loc. Lifu, Loyalty Islands. 



In its banded coloration the species calls to mind Bdellotus foj-mosus 1 (Pocock), 

 the type of the genus Bdellotus, from Java ; but the latter has a single median dorsal 

 white line and the first and last tergites are also white, whereas B. bivittatus has a median 

 dorsal black band and the first and last tergites black. 



EXPLANATION OF PLATE VI. 



Fig. 1. (lonibreymatus anguinus, sp. n. % . x 2. 



1 a. „ ,, ,, last segment of </ from above to show persistence 



of suture (a), between the anal tergite (b), and 



the prescutum (c). 

 1 b. „ „ „ last segment of </ from below showing biarticulated 



genital appendages (a). 

 1 c. „ „ „ labrum. 



1 d. „ „ „ dentate margin of labrum. 



1 e . „ „ „ mandibles from behind showing outer branches (a) 



and inner branches forming labial plate or lower 



lip (b). 

 1 f. „ „ left mandible from the front ; outer branch (a), 



with pectinate edge and labium (b). 

 1 g. n n ,, enlargement of portion of pectination. 



1 h. „ „ „ maxillary lobes of left side from the front. 



1 ;, n „ maxillary lobes and maxillipede of left side from 



below (behind). 



FlG. 2. Eucratonyx meinerli (Poc.) labrum. 



2 a. „ „ ,, right mandible from below (behind). 



2 b. „ i, )) maxillae and maxillipede of right side from below (behind). 



2 c. „ hamalus sp. n. claw of one of the anterior legs. 



\v. 



1 Max Weber's Zool. Ergebnisse, Hi. pt. 2, p. 338, pi. xx. Fig. 5, 1891. 



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