1886.] on the so-called pelvisternum. 163 



1. Endoc<elus orbicularis. 



Rotundatus, ferrugineus ; elytris convexis, fortiter parce punctatis, 

 setulosis, marginibus latius explanatis, apice suhacuminato ; 

 thoracis margine elevato deplanato, basi sulcis duobus jmncti- 

 formibus. Antennarum clava fusca. Long. 1| 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 deflesed 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. Panomoea cingalensis, p. 162. 



3. Cymones hclopioidcs, p. 158. 



4. skarpi, p. 157. 



5. Spaihameles? inflafus, p. 154. 



6. Stictomela chrysomeloides, p. 15fi 



7. Epopterus lineogtdtafus, p. 161. 



8. ephipipiger, p. 160. 



9. eganus, p. 160. 



2. On the so-called Pelvisternum of certain Vertebrates. By 

 R. J. AndersoNj M.D., M.A., Professor of Natural 

 History, Queen's College^ Galway. 



[Eeceivecl March 1, 1886.] 



Prof. Paul Albrecht in 1883 described' an interpubic bone 

 which he found present in Basypus sexcinctus, Bradypus cuculliger, 

 and Choloepus didactyhis. 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 Konigs- 

 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. 



^ BuU. d. rAcademie royale de Belgique, nos. 9-10. 



