tokens: in the NIR images and represents the red, old stellar population of the disc. The K s band isophotes trace the stellar density. In most of the cases, the LSB galaxy discs are found to host big, bright bulges; these have been discussed in earlier studies of bulges in LSB galaxies (Galaz et al. 2002 ). The diffuse stellar disc is barely visible in NIR for most of the sample. This can be due to two reasons: (i) they have a predominantly younger population of stars in the disc which cannot be traced very well in the NIR bands. However, most LSB discs show very little star formation. (ii) Instead, it is more likely that the surface mass density of the stellar discs (Σ * ) are very low and hence show very little structure in either NIR or optical images. Isophotal contours in K s do not show any significant twisting in the bar region for the sample galaxies. This suggests that the stellar orbits are aligned along the bar major axes (x 1 orbits) (Das, Anantharamaiah Yun 2001 ; Sormani, Binney Magorrian 2015 ). If there are stellar orbits perpendicular to the bar length (x 2 orbits), they will be apparent in the K s contours, but most of our sample show simple, nested, contours aligned along the bar major axis. Just from visual inspection, about half the sample of 29 galaxies in Fig. 1 have bright, classical bulges. The remaining have either boxy bulges or are bulgeless. Several galaxies have short oval bars and boxy bulges as well. These systems may represent bars that are undergoing secular evolution and may finally evolve into large, boxy bulges. (Kormendy Kennicutt 2004 ). The galaxies are individually described below. CGCG 381−048: it has a long thin bar which is clearly visible in all J , H , and K s bands. Bulge is small but brighter. Disc is very diffuse and hardly visible for short exposures. UGC 1920: it has an oval bar with a bright, classical bulge. Disc features are very faint. UGC 1455: the galaxy has a roundish, disky bar. Classical bulge. Very bright and covers a large fraction of the bar. The disc is faint. NGC 5905: long thin bar and a bright, classical bulge. Traces of spiral arms and a corotation ring are visible in the NIR images. UM 163: long thin bar and a large, classical bulge. But the disc is very faint. UGC 11754: it has an oval shaped, short bar. No clear bulge. Disc features are visible. PGC 68495: disky, oval bar. Small bulge. Galactic disc is diffuse and faint. UGC 2936: highly inclined galaxy that has a short, oval bar, and distinct spiral arms. The disc spiral arms are surprisingly clear. UGC 10405: very short bar with a bright bulge. Disc is poorly seen. 0223−0033: bright bulge with a small, oval bar followed by the spiral arms. The galactic disc is clearly visible in all the three bands. UGC 5035: small, oval bar and a large, classical bulge. UGC 9087: long bar with bright classical bulge. Disc is very faint. LSBC F568−08: short, oval bar. No clear bulge. Maybe a bar evolving into a bulge. LSBC F568−09: short bar with
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