Gr. E. Dobson — Osteology of Triamops persicits. 
139 
1872.] 
In Ph. larvata the coronoid process of the mandible exceeds the canine 
tooth considerably in vertical extent, and the upper margin of the condyle 
is raised above the summits of the molar teeth. 
The dental formula corresponds with that of Phyllorhina : — 
T 2 1—1 2—2 3—3 
In ‘ 4 5 c - i=T ; P- 2=2 5 m. 3 — 3- 
The upper incisors are deeply bifid, and, as in all genera of Ilhinolophi- 
d<e, minute, placed near each other in the centre ot the space between the 
canines at the extremities of rudimentary premaxilhe suspended in the nasal 
cartilages. Tho upper canine has a well developed, acutely pointed talon 
behind, in front a raised ridge extending nearly half its vertical extent and 
terminating in a small blunt projection. The first upper premolar is minute 
with a slightly concave crown, it is placed outside the tooth-row ; the last 
molar is considerably more developed than in Phyllorhina and resembles that 
of Iihinolophus, equalling, in tho antero-posterior diameter oi its crowm 
more than three-fourths the second premolar, while in Ph. larvata, Ph. 
nobilis, and other species of Phyllorhina, it is less than half. 
In the lower jaw the incisors are deeply bilobed ; a faint indication 
of a third lobe is discernible with the aid of a lens, on the outer side of the 
outer incisor. 
The first premolar has the cingulum largely developed, expanded horizon- 
tally on all sides, and sending upwards, anteriorly and posteriorly a small 
process, so that the tooth appears, at first sight, tricuspidate. The posterior 
process is much more vertically extended than the anterior one. 
The third molar equals the second in size, contrasting with the imper-. 
fectly developed last molar of Phyllorhina. 
The manubrium stertii differs remarkably from that oi Ph. larvata which 
may be taken as characteristic of the form of this bone in Phyllorhina. The 
lateral processes behind the sterno-clavicular articulation are triangular and 
acutely" pointed, contrasting with the irregularly blunt processes of Ph. 
larvata ; the Carina is greatly developed, forming a deep, quadrilateral pro- 
jection arising from the entire length of the bone. The second sternal bone 
is provided with a deep triangular projection, the anterior margin of which 
is separated from the posterior margin of the carina manubrii by a wide 
triangular space ; behind, the projecting posterior angle conceals the junc- 
tion of the third sternal bone. The third bone is small, narrow, and spine- 
like ; its posterior extremity supports a thin, semicircular cartilage. 
In Phyllorhina the carina manubrii is shallow, forming a slightly raised 
ridge for more than two-thirds its length in the anterior third it is pro- 
duced into a blunt spine. The second sternal bone develops a shallow keel 
along its entire length ; the third bone is short, expanded laterally, termina- 
ting in a semicircular margin.* 
* This is the most usual form of the sternum in insectivorous bats. (See Blain- 
ville, Osteographio). The number of bones here given is the number of separable 
bones distinguishable in the sternum of an adult specimen. 
