150 bulletin: museum of comparative zoology. 



Coloration in general as in A. insignis. In the type the proximal articles 

 of antennae but little darker than the others. 



Antennae shorter; the fifth article shorter in comparison with the third. 



The first tergite differs from that of the two other species in having a narrow 

 rim in front beneath the free border and toward its caudal edge, this rim fitting 

 with its lower edge against the head and expanding laterally into the usual end 

 pieces. In the type it also differs in having twelve border lobes instead of 

 only ten, the end lobes being subdivided; but in the young paratypical speci- 

 mens the end lobes are large but not subdivided; whether always subdivided 

 in adults it is impossible at present to say. The lobes of the keels in number 

 and arrangement as in the other species. The marginal teeth more rounded 

 than in A. insignis. Upper surface of tergites strongly densely tuberculate, 

 the large tubercles of the four longitudinal rows prominent. A special eleva- 

 tion or tubercle on base of caudolateral lobe of each porigerous keel; on the 

 other keels a very prominent elevation proximad of the middle lobe. Differ- 

 ing in that the caudolateral angles of the sixteenth keels are not or scarcely 

 produced caudad beyond caudal margin, the seventeenth but Kttle so, and 

 the processes of eighteenth and nineteenth proportionately shorter. Dorsal 

 cones of anal tergite large, not fully reaching end of cauda proper. 



Length, 9.5 mm.; width, 1.6 mm. 



413. AiPOTROPis lasemanus, sp. nov. 



Type.— M. C. Z. 4,612. Paratypes.— M. C. Z. 4,613. Fijis: 

 Lasema (W. M. Mann). 



Distinguished from A. atopus and insignis in the structure of the 

 gonopods. These are in general very similar. But they are shorter, 

 reaching only to the anterior end of the prozonite, and are more 

 strongly bowed mesad ; the dorsal curve and the constriction at distal 

 end less pronounced; the distal divisions are shorter and the mesal 

 one on each side extends at first nearly horizontally mesad and then 

 runs cephalad, the latter portion shorter than the former, crossing 

 the one from the opposite gonopod, widely separated from the outer 

 lobe and not extending distad beyond it or scarcely so. The apical 

 division or blade with total length but two and a half times the great- 

 est longitu(Hnal diameter of the coxa as against three and a half times 

 in A. atopus. 



Coloration similar to that of A. atopus excepting that the back- 

 ground of the metazonites abo\e is flavous with the dark brown or 

 dusky color mostly confined to the coarser tubercles; first tergite 

 entirely dark; ventral longitudinal fulvous band of keels more sharply 

 limited than in atopus. 



