PLATE XXXVL 
Pisces — Siluridce. 
Fig. 1, Bagarius yarrelli (Sykes). Anterior part of skull; from the Siwalik Hills. Indian 
^ Museum (No. E. 155). 
,, 2. Arius, sp. Hinder part of cranium, restored in outline from A. latiscutaius ; from the 
Siwalik Hills. British Museum (No. 16402, a). 
,, 3. Heterobr.^nchus interhedius, Gunther. Skull ; from the Nile at Khartum. British 
Museum. 
,, 4. Heterobranchus ral^mndicus, Lydekker. Skull ; from the Siwalik Hills. British 
Museum (No. 16402, c). 
,, 5. Macrones aor (Buch. Hamilton). Skull ; from the Siwalik Hills. British Museum 
(No. 40822). 
* Figs. 3, 4, nat. size ; figs. 1, 2,4- nat. size; fig. 5, | nat. size. «. supraoccipital, and 3. frontal 
vacuity ; e. articular surface for barbel ; eth. ethmoid ; fr. frontal ; na anterior, and nd posterior narial 
aperture ; or. orbit ; sup. supraoccipital process ; tu. turbinal. 
