258 Memoirs of the Indian Museum. {Vox.. Ill, 



This form is represented in the Sarawak Museum collection by specimens from 

 Kuching, Matang Rd., 4th mile Rock Rd., Mt. Kinabalu 5000-6000 ft., and Lingga; 

 in Mr. Andrevves' collection by specimens from Karkur Ghat (1500 ft., May igii) and 

 Nadgam (2500 ft., Oct. 1910) in the Nilgiris, and from Kuching and Mt. Kinabalu in 

 Borneo and from Java; and in Mr. Stevens' collection by a specimen from Silonbari 

 at the base of the N. L,akhimpur hills in Assam. 



Description.— Length 16-25 mm. Lahrum and mcntum mucli as in the previous 

 species of the genus. Mandibles externally angular , upper tooth well developed , though 

 less prominent than in L. dentatus ; in front of it a characteristic oblique ridge which 

 forms an equally prominent tooth in large specimens but is often imperfect or absent 

 in very small ones; anterior lower tooth simple on right side, simple or faintly 

 lobed on left. Head more or less clearly punctured in depressions ; frontal area 

 usually traversed by a more or less distinct median ridge, more or less longitudi- 

 nally rugose, variable in form but normally much broader than in L. dentatus, 

 the inner tubercles being at least twice as far from each other as from the smaller 

 outer tubercles ; frontal area connected to central tubercle by narrow median ridge ; 

 parietal ridges long, extending as far as margin of supra-orbital ridges, low but sharply 

 crested along their anterior margin ; canthus less prominent than in L. dentatus. 

 Pronotum with strong median groove ; in large specimens strongly and somewhat 

 closely punctured in and around scars, very sparsely near angles; in somewhat 

 smaller specimens the puncturing of the latter areas is denser, and in smaller ones 

 still the pronotum is equally densely punctured along the whole of the sides. 

 Prothorax beneath as in L. detitatus. Scutcllum and mesothoracic episterna also as in that 

 species. Mesosternum with inner wall of scars normally short and straight (rarely longer 

 and more or less curved), the surface of the plate polished, becoming often more or less 

 roughened or rugulose (in small specimens especially) and sometimes dull in the 

 lateral angles. Metasternum with central area sharply defined, in most large specimens 

 highly polished as in L. dentatus , hut in smaller ones usually roughened at least in front 

 by fine close puncturing of varying distinctness, a few large scattered punctures some- 

 times present ; anterior intermediate area finely punctured ; a broad unpunctured 

 band extending from anterior intermediate area between central and lateral areas along 

 whole outer border of posterior intermediate area , the inner angle only of which area 

 is punctured in large specimens and that sparsely ; lateral areas narrow, linear, rough. 

 Hind coxae quite smooth and polished, punctured, or rough. Abdominal sterna with 

 lateral punctured areas well developed, otherwise smooth or more or less exten- 

 sively and distinctly punctured, the whole of the last segment and the greater part 

 of the last but one being densely punctured in some specimens, especially small ones. 

 Lateral grooves of elytra not wider than the ridges between them, the strong punc- 

 tures with which they are marked not distinctly drawn out to form transverse 

 grooves. 



Habits.— Mt. H. L. Andrewes tells me that the much-flattened examples of this 

 species which he sent to Mr. H. E. Andrewes from the Nilgiris were obtained in 

 Karkur Ghat and adds, " It is gregarious and seems, as its shape would lead me to 



