33. TLAGUSIA. 491 



Plagusia tessellata, Quoy df Gaim. Voy. Uran. Zool. p. 240 ; Guich. in 



Ramon de la Sagra, Hist. Cuba, P&iss. p. 189. 

 Aphoristia ornata, Kaiq}, I. c. 



D. 96. A. 80. C. 10. V. 4. L. lat. 95. 



Ventral fin contiguous with the anal. A smaU nostril above the 

 upper Up, in front of the lower eye *. Eyes subcontiguous, the upper 

 somewhat in advance of the lower. Lips not fringed. The length 

 of the snout is one-fourth of that of the head. The height of the 

 body is contained thrice and three-fourths in the total length, the 

 length of the head five times and three-fourths. Bro-\vnish, uniform 

 or with irregular dark cross-bands. 



Atlantic coasts of tropical America. 



a-h. Fine specimens. San Domingo. Purchased of Mr. Cuming, 

 c. Adult : skin. Jamaica. From Dr. Pamell's Collection. 

 d-e. Adult and half-grown : not good state. From the Haslar Col- 

 lection. 



33. PLAGUSIA. 



Plagusia, pt., Cuv. Megne Anim. 



Plagusia, Kaup in Wiegm. Arch. 1858, p. 108. 



Eyes on the left side ; pectorals none ; vertical fins confluent. 

 Scales ctenoid, small ; lateral line on the left side double or triple. 

 Upper part of the snout produced backwards into a long hook, cover- 

 ing the mandible ; mouth unsymmetrical, rather narrow ; lips of the 

 coloured side with tentacles ; teeth minute, on the right side only. 

 One nostiil, on the left side, before the angle of the lower orbit ; 

 none between the eyes. GiU- opening very narrow. 



East Indies. 



1. Plagusia marmorata. 



? Plagusia dipterygia, Riipp. Atl. Fische, p. 123. taf. 31. fig. 3. 

 Plagusia mai-morata, Bleek. Verh.Batav. Genootsch.xxiv. P/euron.Tp.20, 

 or Natuurk. Tydschr. Nederl. Ind. i. p. 411. 



D. 99-106. A. 75-85. C. 10. V. 4. L. lat. 100. 



The height of the body is more than one-fourth of the total length, 

 the length of the head two-ninths. Two lateral lines on the left side, 

 separated bj' seventeen longitudinal series of scales at the point of 

 their greatest distance. The length of the snout is two-fifths of that 

 of the head. Rostral hook veiy long, extending far behind the lower 

 eye. Brownish, finely marbled with dark brown. 



? Red Sea. East Indies. 



a. Fine specimen. AmbojTia. Purchased of Mr. Frank. 



b. Adult. East Indies. Presented by General Hardwickc. 



c. Adult. From the Haslar Collection. 



♦ Hr. Kaup speaks of an upper nostril between the eyes, as in liis genus Arelia. 

 I can onlj find a small papilla without opening in front of the interorbital space, 

 wliich is exceedingly narrow. 



