X LIST OF ILLUSTRATIONS. 



TEXT FIGURES. 



Page. 



Map of Rhio-Linga Archipelago showing distribution of Tragulus napu group, 



members of which have been taken on islands shaded ? 2 



Map of a part of the Malay region showing relative size of Rhio-Linga Archi- 

 pelago 3 



Left dentary of Opisthias rarus 36 



Right femur of Laosaurus gracilis Marsh, a, front view; b, side view; d, view of 

 proximal end; e, view of distal end; t. c, inner trochanter 39 



Caudal vertebra of CceZ-wrus/rag'i'Zis Marsh, a, side view; 6, top view; c, ventral 

 view; d, front view; e, back view; s, neutral spine; z, anterior zygapophysis ; 

 2', posterior zygapophysis 41 



Edestus a-enulatus, type. Vertical section between the first and second teeth. 



2, second sheath ; 2', enameled process of second tooth ; 3, sheath of third tooth ; 

 4, sheath of fourth tooth; 5, sheath of fifth tooth; 6, upper border of sheath of 



sixth tooth; 7, groove along lower border of anterior half of shaft 44 



Edestus crenulatus, type. Vertical section between third and fourth teeth. 



3, hinder end of third tooth; 4, sheath of fourth tooth; 4^, enameled process 



of fourth tooth ; 5, sheath of fifth tooth ; 6, upper border of sheath of sixth tooth . 44 

 Edestus serratus, type. Section between first and second teeth. 1, hinder end 

 of first tooth; 2, enameled process of second tooth; 3, sheath of third tooth; 



4, sheath of fourth tooth; 5, sheath of fifth tooth; 6, upper border of sheath 



of sixth tooth; 7, groove along lower border of anterior half of shaft 47 



Edestus serratus, type. Section between third and fourth teeth; 3, hinder end of 



third tooth; 4, enameled process of fourth tooth; 5. sheath of fifth tooth; 



6, upper border of sheath of sixth tooth 47 



Edestus minusculus, type. Section of sheath just in front of tooth 50 



Edestus minor, type. Section of sheath just in front of tooth 50 



Lissoprion ferrieri, section of shaft and tooth. 1, enamel of third tooth ; 2, groove 



between narrowed processes of third and second teeth; 3, enameled process of 



second tooth; 4, exposed portion of shaft; 5, groove along lower border of shaft. 56 



Balanus peruvianus, lateral view 69 



Chthamalus cirratus. Inside views of tergum and scutum enlarged, and group 



of three entire animals 



Gnathia tuberculata. Head and thorax 



Gnathia tuberculata. Anterior margin of head 



Gnathia tuberculata. Abdomen 



Paranthura japonica. Head and first three segments of thorax 



Paranthura japonica. Last four segments of thorax and abdomen 



Alcirona niponia. Leg of first pair 



JiJga magnoculis. Head and first two segments of thorax 



/Ega synopthalma. Head and first two segments of thorax 



Rocinela niponia. Head and first two segments of thorax 



Rocinela niponia. Third leg 



Syscenus latus 



Livoneca sacciger 



Livoneca epimerias 



Tecticeps renoculis 



Tecliceps renoculis. First leg of male 



Tecticeps renoculis. Second leg of male 



Tlolotelson tuberculatus . First antenna of female 



Ifolotelson tuberculatus. AVjdomen of male 



Uolotelson tuberculatus. Abdomen of female 



Holotelson tuberculatus. Second pleopod of male 



