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



73 



Order. COLOBOGNATHA. 



Genus. Bdellotus, Cook. 



(21) Bdellotus bivittatus, sp. n. 



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

 polished, bnt 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 8 mm. 



Loc. Lifu, Loyalty Islands. 



In its banded coloration the species calls to mind Bdellotus formosus 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. Gonibreymatus anguhms, 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 («) 



and inner branches forming labial plate or lower 

 lip (b). 



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



witli pectinate edge and labium (6). 

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



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



1 i. ,, „ „ maxillary lobes and maxillipede of left side from 



below (behind). 



Fig. 2. Eucratonyx meinerti (Poc.) labrum. 



2 a. „ „ ,, right mandible from l>elow (behind). 



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



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



1 Max Weber's Zool. Ergebniste, in. pt. '2, p. 338, pi. xx. Fig. 5, 1894. 

 W. 1 1 



