94 Christmas Island. 



with the last joint sphferoidal. The pro thorax is deeply emarginated 

 for the head, but the lateral lobes do not extend beyond the front 

 of tlie eyes ; the hind margin is lobed in the middle, and has a 

 blunt right-angled tooth on each side fitting into a corresponding 

 notch in the elytron. The elytra are parallel- sided, slightly 

 acuminate towards the apex, Avith the margins entire, and, together 

 with the rest of the upper surface of the body, are clothed with 

 flat oval scales. 



17. Oniscomorpha marmorata, Arrow, sp.n. (PI. X, Tig. 2.) 



Oblonga, subdepressa, fusca, squamis albidis supra tecta, ore 

 antennis pedibusque f errugineis ; clypeo late emarginato-truncato ; 

 prothorace elytrorum latitudine, lateribus valde rotundiitis, crenatis, 

 subtus squamulis albis parce vestito ; elytris costatis, lateribus 

 parallelis, integris, costis tuberculiferis, interstitiis albo-equamosis, 

 fusco-marmoratis. 



Long. 6 mm. 



Family COLYDIIDJE. 



18. Xuthia maura, Pascoe: Joum. Ent., ii (1863), p. 128. 



A single example from rotting wood. The specimen is, perhaps, 

 a trifle narrower than the type from Morty, but this is probably 

 a sexual difference. 



19. Bothrideres strigatus, Arrow, sp.n. (PI. X, Fig. 3.) 



Angustatus, piceus, subnitidus, capite prothoraceque dense et 

 profunde strigoso-punctatis, hujus medio Knea Isevi, ante medium 

 impressione baud pi'of unda, post medium spatio impunctato circular! 

 fossa profunda postice incluso, striis duabus ad basin connexa ; 

 marginibus leviter sinuatis, postice valde contractis, angulis 

 posticis rectis ; elytris disco striatis, partibus exterioribus carinatis, 

 intervallis ] et 3 paullo punctatis. 



Long. 8 mm. 



The colour is black, with the antennae and legs a very dark red. 

 The head and thorax are coarsely punctured, and there are a few 

 scattered punctures on the first and third interstices of each elytron. 

 The third interstice is also angularly elevated, and beyond it the 

 striae are replaced by three sharp costae. Near the base of the 

 thorax is a U-shaped impressed line enclosing a smooth area, and 

 in front of this is a shallow depression. 



The species is represented only by a single specimen. 



