-- 154 — 
Distribution: | Singapore, Borneo. 
Sumatra: Palembang, Djambi. 
Malayan name: “Lidah” (Palembang). 
487. SYNAPTURA MELANORHYNCHA Buer, 
GüNTHER, IV, р. 487; Vorz (26), p. 380. 
Achiroides melanorhyncha, BLEEKER (18), ут, p. 26, tab. CCXLVI 
(Pleur. xv), fig. 6. 
Fresh- and brackish water. ` 
Distribution: Cambodja, Borneo. 
Sumatra: Banju-asin (Palembang). 
Malayan name: “Lidah” (Palembang). 
PLAGUSIA. 
488. PLAGUSIA MARMORATA Duer, 
GüNTHER, IV, p. 491. 
Paraplagusia marmorata, BLEEKER (18), vr, p. 28, tab. CCXLVI 
(Pleur. xv), fig. 5. 
Sea. 
Distribution: Red Sea (2), India, Batu, Singapore, 
Borneo, Java, Bali, Celebes, Batjan, Amboina. 
Sumatra: Padang. 
489. PLAGUSIA BILINEATA Cant. 
GÜNTHER, Iv, p. 499, 
Paraplagusia bilineata, BLEEKER (18), хі, p. 27, tab. coxuv 
(Pleur. хш), fig. 5. 
Sea. 
Distribution: Malacca, Penan g, Singapore, Borneo, Java, 
Madura. 
Sumatra: Trussan, Benkulen. 
Malayan name: “Lada-lada” (Benkulen). 
490. PLAGUSIA MACROCEPHALUS Buer, 
Paraplagusia macrocephalus, Вікекев (18), vi, p. 28, tab. 
CCXLVI (Pleur. xv), fig. 3. 
Sea. 
Sumatra: Padang. 
