OCR Text |
Show 1893.] FISHES FROM LAKE TANGANYIKA. 629 GLYPHOLYCUS, g. n. Lycodout. Allied to Boodon, but with the dentition of Lamprophis, the maxillary teeth (about eighteen in number) being placed in a continuous series, and the anterior and middle ones being longer and stronger than the posterior; anterior mandibulary teeth stronger than the following. Sides of the head with a deep longitudinal groove or fold which separates the series of upper labials from the shields above. Head rather small and depressed; eyes small, with round pupil; body not compressed ; scales smooth, in twenty-one or twenty-three rows ; anal entire ; subcaudals in two rows ; nasal semi-divided ; one loreal; anterior frontals pointed in front. GLYPHOLYCUS BICOLOR, sp. n. Vertical shield rather small, not much larger than the supraocular ; occipital as long as the vertical and posterior frontal together; eight upper labial shields, of which the fourth enters the orbit; rostral shield reaching the upper surface of the head ; loreal elongate, one anterior ocular not reaching the upper surface- Head of Glypholycus bicolor. of the head; two posterior oculars; temporals 1 + 2-1-3 ; ventrals 163; subcaudals 56-72. Upper parts uniform brownish lead-coloured ; lower parts and the two outer series of scales whitish ; a brownish line along the meeting edges of the subcaudals. Several specimens, of which one measures 26 inches, the tail taking 5|. MASTACEMBELUS TANGANICJE, sp. n. D. 33/56. C. 12. A. 2/61. Trunk and tail short and compressed, its greatest depth being contained twice and a fourth in the length of tbe head. Rostral appendage very short. Vertical fins continuous, the length of tbe tail being but little more than two fifths of that of the head and trunk together. Dorsal spines short, the distance of the foremost from the operculum being scarcely half the length of the head. Length of |