New Species of Staphylinidae from Singapore. G9 



of about equal length, the 3rd much longer, the 4th to the 8th all 

 longer than broad, gradually decreasing in length, 9th and 10th as 

 long as broad, the 11th conical; the las! seven joints infuse ate. 

 Thorax widesl at the middle, and from there gradually and equally 

 narrowed to the anterior and posterior angles; disc without trace 

 of impressions, coarsely punctured like the head. Elytra square, 

 convex, at the suture scarcely as long as the thorax, the sides 

 rounded, the posterior margins together distinctly emarginate; 

 puncturation even coarser than that of the fore-parts. Abdomen 

 cylindrical, gradually pointed behind, bases of the segments strongly 

 constricted; the first four visible segments as strongly punctured 

 as the head, the following segments gradually less distinctly punc- 

 tured ; anal spines short, incurved. Last joint of the tarsi distinctly 

 shorter than the first. 



,\ Seventh ventral segment with acute triangular excision in the 

 posterior margin, sixth with a rather broad, thickly punctured and 

 pubescent impression occupying the whole length of the segment. 



Hab. Manclai, in debris. 



16. Stenus (Hypostenus) caslaneus, n. sp. 



•Shining, head black; thorax and elytra dark brown; abdomen 

 with the first four and half the fifth segments chestnut-brown, the 

 rest black; first two joints of the antennae, and the legs, testaceous, 

 the : knees and base of the tibiae infuscate. Length 4 mm. 



A slender species, very distinct by its colour and having somewhat 

 the facies of a small S. bispinus. Head black, glabrous, except for 

 some whitish pubescence on the front, rather deeply and longitudin- 

 ally impressed on either side of the vertex, which is elevated into a 

 rather broad, impunctate ridge, the latter with an elongate impres- 

 sion posteriorly; from the base of the antenna! tubercle on either 

 siele an impunctate ridge extends backwards and outwards towards 

 the eye; sculpture consisting of a few rather huge, scattered punc- 

 tures. Antennae long and slender, all the joints considerably longer 

 than broad, the 3rd, 4th and 5th subequal. 6th, 7th and 8th gradually 

 shorter, 9th, 10th and 11th long. oval. Palpi testaceous. Thorax 

 dark pitchy-brown, widest at the middle; viewed from above, 

 narrowed anteriorly in a nearly straight line, posteriorly narrowed 

 and sinuate behind the middle, feebly impressed postero -laterally ; 

 anterior and posterior borders distinctly margined; disc without 

 impression, uniformly and rather coarsely punctured. Elytra dark 

 pitchy-brown, glabrous, broader than the head, as broad as long, 

 ample, convex, a little longer at the suture than the thorax, emargin- 



