1886. ] ON THE SO-CALLED PELVISTERNUM. 163 
1. ENDOCG@LUS ORBICULARIS. 
Rotundatus, ferrugineus ; elytris convewis, fortiter parce punctatis, 
setulosis, marginibus latius eaxplanatis, apice subacuminato ; 
thoracis margine elevato deplanato, basi sulcis duobus puncti- 
Sormibus. Antennarum clava fusca. Long. 14 millim. 
Hab. Ceylon (Lewis). 
Orbicular, elytra subglobularly convex, with their lateral margin 
much expanded in the middle, but the widened rim vanishing in the 
apex, where they are conjointly deflexed and acuminate ; their disk 
is evenly and strongly punctured, the margins less distinctly ; the 
extreme limb of the expanded margin is itself finely reflexed. The 
head is exserted, with small prominent coarsely granulated eyes. 
The maxillary palpi have their apical joint subulate. The thorax is 
short, narrowed in front, with the margin raised, thickened and 
flattened as in Stenotarsus, the front angles being rounded in to 
form the emarginate opening for the head, than which it is much 
wider ; the base is narrower than the elytra at their base, and is 
furnished with two very deeply impressed punctiform sulci, which 
are about halfway between the centre and the hind angle, on each 
side. One specimen, taken at Dickoya. 
EXPLANATION OF PLATE XVII. 
Fig. 1. Cymones cowani, p. 158. 
2. Panomea cingalensis, p. 162. 
. Cymones helopioides, p. 158. 
sharpi, p. 157. 
. Spathomeles? inflatus, p. 154. 
. Stictomela chrysomeloides, p. 156 
. Epopterus lineoguttatus, p. 161. 
ephippiger, p. 160. 
eganus, p. 160. 
OMAR OP coh 
2. On the so-called Pelyisternum of certain Vertebrates. By 
R. J. Anprrson, M.D., M.A., Professor of Natural 
History, Queen’s College, Galway. 
[Received March 1, 1886.] 
Prof. Paul Albrecht in 1883 described! an interpubic bone 
which he found present in Dasypus sewcinctus, Bradypus cuculliger, 
and Cholepus didactylus. He compares the symphysial cartilage 
found in many animals and this bone with the parts of the sternum, 
shoulder-girdle, and os hyoides, and gives several very instructive 
and clear figures of specimens in the museums at Berlin and KGnigs- 
berg. The figures of the Lacertilian pelves are copied from the papers 
of Profs. Huxley and Wiedersheim, and the scheme of homology he 
represents in a table at the end of his note. 
* Bull, d. l’Académie royale de Belgique, nos, 9-10. 
