PYTHIA §. 3. 4. PLECOTREMA §. 1. 
343 
44. variabilis (Scarabus) Hombr. & Jacq. f I. 98. II. 74. — Nova 
Guinea, ins. Arrow. 
45. crassidens (Scarabus) Hombr. & Jacq. f I. 99. II. 74. — 
Amboina. 
§• 4 . 
46. dilatata (Polydonta) Beck, f I. 99. II. 75. — Ins. Philippin. 
47. gibbosa (Polydonta) Beck, f I. 99. II. 75. — Habitat? 
48. carinata (Polydonta) Beck, f I. 79. — Sincapore. 
VII. Plecotrema H. & A. Adams. 
Pfr. Mon. Auric, p. 99; Auric. Brit. Mus. p. 75. — 
Harper Pease in Proc. Zool. Soc. 1869. p. 59. (Descriptio 
animalis PL striatae Phil.) — Patel Catal. 1873. p. 16. 114. 
— Lirator Beck f 
Conspectus specierum. 
A. Aperte umbilicatae §. 1. Nr. 1 — 7. 
B. Subimperforatae §. 2. — 8 — 21. 
C. ? Species aberrans §.3. — 22. 
D. Species fossiles §. 4. — 23 — 27. 
§• 1 . 
1. typica H. & A. Adams. I. 100. II. 76. — Gassies Faun. Nouv. 
Caled. p. 67. — Pulo Penang, ins. Philippin., Nova Caledonia. 
2. concinna H. & A. Adams. (Coll. 1.) I. 101. II. 76. — Patel Cat. 
p. 114. — Australia. 
3. lirata H. & A. Adams. (Coll. 2.) I. 101. II. 76. — Australia. 
4. bella H. & A. Adams. I. 102. II. 77. — Ins. Philippin. 
5. PI. Souverbiei Montrouzier. 
„T. umbilicata, ovato-conica, scalaris, solida, liris elevatis, 
spiralibus, inaequalibus, granulatis sculpta, interstitiis oblique 
denseque sublamellatim striatis, non nitens, sordide fulva; spira 
producta, scalaris, apice acutiuscula; anfr. 8, infra suturam 
lira solitaria, subvalidiore cincti, superne angulati, cum spatio 
inter angulum (saepe validius liratum) et liram suturalem sub- 
plano-concavo, elirato et dense striata; ultimus spira brevior 
