546 ^Tr. K. Andersen on new Petalin. 



tlip anterior margin raised and Avidely emarginate, near]y 

 lialf as wide again as the posterior and lateral margins. 

 Scutelluni short and transverse, almost smooth, much 

 narrower than the pronotum. Median segment shining and 

 almost smooth, broadened posteriorly, tlie dorsal surface 

 only about one-third of the length of the pronotum, obliquely 

 truncate posteriorly, the surface of the truncation raised 

 along the median line. Abdomen shining and sparsely 

 punctured, much broader than the thorax, the basal segment 

 witli a patch of long cinereous hairs in the middle ; second 

 segment with nine strong transverse carinse, higher at the 

 apex than at the base ; pygidium narrow and transversely 

 striated at the base, sharply narrowed before the base of the 

 almost vertical posterior truncation, the surface of which is 

 twice as long as broad, smooth, the dorsal plate much 

 shorter than the ventral, with a notch on each side at the 

 base, the ventral plate emarginate at the apex and serrate 

 at the sides. Fifth ventral segment longitudinally striated. 

 Intermediate tibiae broad and strongly spinose, 



Hab. Aru (Elgner). Sent by Mr. Froggatt. 



This belongs to the group of T. serr'iger. Sharp, and is 

 nearest to T. celebensis, Turn., from Avhich the male differs 

 in the sparser puncturation, in which it approaches more 

 closely to T. oUvaceus, Turn. From both of tiiese species 

 it differs in the truncation of the hypopygium. The female 

 differs from calvus, Turn., in the narrower pygidium, the 

 narrower raised median space on the front, and in the shape 

 of the scape, which is curved, not elbowed as in calvus ; the 

 sculpture is also different. The raised frontal area is also 

 narrower than in celebensis, Turn., and with a less strongly 

 marked median carina. 



LXIV. — Brief Diagnoses of Eight neic Petalia, with a List of 

 the knoii-n forms of the Genus. By Knud AndersEN. 



Petalia tragata, sp. n. 



As P. javanica (p4 large), but free portion of tragus lingu- 

 late ("tongue-shaped"), i. e. inner as well as outer margin 

 passing in a smoothly rounded curve into upper margin (in 

 P. javanica corresponding portion of tragus semilunate, /. e. 

 inner margin joining upper in a sharp angle) ; skull a little 

 heavier, pi-eniolars and molars coiisj'icuously larger. 8kull 



I 



