chamberlin: icyriopoda of the Australian region. 147 



406. PlA! viviiii \< i s DADAY1 (Silvcstri). 



Butrachyrhacku dadayi Sifostri, Term, fuz., is ( .»«», 22, p. 206, pL 10, fig. l .1-17, 

 pi, 11, fig. is >21. ] 



Locality. New.Guinea: Astrolabe Bay, Erima. 1 



107. PlATTBRHACUS BEAUFORT! Attems. 

 Bijdr. dierk., 1915, 20, p. 6, pi. 1, fig. 3-6. 1 

 Locality, — Ceram: Honitetu. 1 



408. Plattrrhacus mediotaeniatus Attems. 

 Bijdr. dierk., 1915, 20, p. 7, pi. 1, fig. 7. 1 

 Locality. — Ceram: Honitetu. 1 



409. Plattrrhacus puliger Attems. 

 Bijdr. dierk., 1915, 20, p. 7, pi. 1, fig. 8, 9. 1 

 Locality. — Waigeu: Kaiawat, near Beo, Bahan. 1 



Aipotropis, gen. nov. 



Composed of the head and twenty segments. Thirty-one pairs of 

 legs. Head completely, or very nearly completely, covered by the 

 first tergite. Antennae long; strongly clavate distad of end of third 

 article, the fifth and sixth articles much enlarged, the seventh again 

 narrower, subcorneal; the fifth article much the longest, in length 

 about equalling the sixth and seventh together. Collum with ante- 

 rior and lateral borders together forming an even semicircular line. 

 The free border or rim crenate as in Lophodesmus, radial sulci simi- 

 larly dividing it into ten lobes. Dorsum of tergites in general low, 

 only weakly convex; the keels high, but little below highest part of 

 dorsum and much above the middle level of the body. Keels broad, 

 nearly horizontal, lateral and caudal border divided into lobes by 

 radial sulci, the margin crenate or lobate. Surface of tergites includ- 

 ing keels out as far as the border lobes covered with numerous minute 

 tubercles or coarse granules; in addition two submedian longitudinal 



