1872.] G. E. Dobson — Osteology of Trieenops persicus. 
Ill 
length ; foramen rotundum united with sphenoidal fissure ; roof of meso- 
pterygoid fossa with a longitudinal groove terminating in an excavation pos- 
teriorly ; basi-oecipital between auditory bull* very narrow, in most species 
linear ; par-occipital processes slender, produced ; antero-posterior diameter 
of last molar equal to more than three-fourths that ol antepenultimate molar ; 
premolars |^|. 
Sltbfam. II. PHYLLOBHINTNiE. 
Toes equal, with two joints each ; ileo-pectineal spine united by bone 
with a process derived from antero-inferior surface ol ilium. 
Genus. 2. Phyllorhina. 
Metacarpal bone of fourth finger less than that of second finger m 
length; foramen rotundum distinct; auditory hull® sepaiatcdhy a bioad 
basi-occipital ; roof of mcsopterygoid fossa continuous with under suiface o 
the basis cranii , not grooved, nor perforated by foramina ; pai -occipital pio 
cesses short, blunt ; zygomata narrow, slightly expanded posteriorly, cui vet 
outwards ; antero-posterior diameter of last molar less than halt o t ic 
antepenultimate molar ; premolars or 
Genus. 3. Trieenops, 
Metacarpal bone of fourth finger less than that of second finger m 
length ; foramen rotundum united with sphenoidal fissure , basi-occipita 
tween auditory bull® narrow, not linear ; roof of mesopterygoid ossa P ieice 
by foramina, not grooved, continuous posteriorly with under surface of asut 
cranii ; par-occipital processes long, slender ; zygomata greatly expanded ver- 
tically, not curved outwards ; last upper molar equal to three fourths of the 
antepenultimate molar ; mandible pierced by an mfra-condyloid foramen ; pre- 
molars 
2—2 
Genus. 4. Ccelops* 
Metacarpal bone of index finger very long, extending ; beyond the first 
phalanx of the second finger; metacarpal bone of fourth finger exceeding 
that of second finger in length ; basi-occipital broad between auditory bull* ; 
zygomata slender, curved outwards ; last upper molar equal to three-fourths 
of the antepenultimate molar ; tail very short or absent ; premolars ^ 
Explanation of plate vi. 
Fi^s. 1.9. Triarn ops versions, Dobson. 1. Side view of skull , U, base of skull , 
lb, iower jaw; all enlargedjdouble the natural size; 2 scapula, double size ; 3 sale 
view of thorax, showing the very prominent e anna sterm, enlarged double natural 
Bize • 4 4a distal extremity of humerus, enlarged four times the natural size ; 5, third 
* Type Calops Trim, Blytli, Journ. As. Soo. Bengal. Dr. W. Peters has noted the 
relations of this genus with Fhyllorhina. (See Monatsber. Berlin Akad., 1865, p. 644, 
and also for 1871). 
* 19 
