308 DR. A. GUNTHER ON REPTILES AND FISHES [June 28, 
Sillago acuta, C. & V. 
Psettus argenteus, L. 
Equula fasciata, Lacép. 
Mugil, sp. (young). Mouth of Zambesi. 
*Chromis squamipinnis, Gthr. Lake Nyassa. 
C. mossambicus, Peters. Lake Nyassa. 
*C, lateristriga, Gthr. Lake Nyassa. 
* Hemichromis intermedius, Gthr. Lake Nyassa. 
*H. robustus, Gthr. Lake Nyassa. 
*H. longiceps, Gthr. Lake Nyassa. 
*H. dimidiatus, Gthr. Lake Nyassa. 
Eutropius, sp. incerta (young specimens). 
Synodontis schal, Bl. Schn. Rovuma. 
* Arius kirkii, Ginth. Fish. v. p. 163. Zambesi. 
Brachyalestes acutidens, Peters. 
* Hydrocyon lineatus, Schleg. River Shiré. 
*Distichodus macrolepis, Ginth. Fish. v. p. 362. River Shiré. 
D. shenga, Peters. River Shiré. 
Mormyrus macrolepidotus, Peters. Rovuma. 
*M. catostoma, Gthr. Fish. vi. p. . Rovuma. 
Albula bananus, Lacép. 
Hydrargyra, sp. 
Labeo congoro, Peters. River Shiré, below cataract. 
L. cylindricus, Peters. Rovuma. 
* Pelotrophus microlepis, Gthr. Lake Nyassa. 
*P. microcephalus, Gthr. Lake Nyassa. 
Pristis perroteti, Valenc. 
Descriptions of New Species. 
Lizarps. 
Mocuuvs (g. n. ScrnciDARUM). 
Body and tail elongate; limbs feeble; toes 5—5. Snout de- 
pressed, wedge-shaped, the rostral shield being much broader than 
high, with a sharpish anterior edge. A pair of supranasals; nostril 
in the middle of a separate nasal shield. Scales perfectly smooth. 
Eyelid scaly ; opening of the ear small. Palate toothless. 
MocHLvUS PUNCTULATUS. 
The supranasal shields are in contact with each other ; the frontal 
and vertical form a broad suture together ; four supraciliaries ; two 
small anterior and two larger posterior occipitals with a small cen- 
tral shield between. Ear without lobulesin front. There are seventy 
scales in a longitudinal series between mental shield and vent; the 
middle of the trunk is surrounded by twenty-eight series of scales. 
Limbs feeble. The length of the anterior equals the distance between 
the extremity of the snout and the front margin of the ear, and that 
of the posterior is one-third of the length of the trunk. The fingers 
are short, clawed: the third scarcely longer than the fourth; the 
