CARCHARINUS FALCIFORM IS. 129 



verticali; rostro acuto parte praeorali rictus longitudine paulo, rictus latitudine 

 multo breviore; linea rostri anteriore subparabolica; uaribus rostri apici multo 

 magis quam angulo oris approximatis, valvula trigona brevi; rictu valde Iato 

 multo latiore quam longo; deutibus maxilla superiore triaugularibus parum 

 obliquis totis denticulatis basi latis basi externe processu denticulis majoribus 

 serrato; dentibus maxilla inferiore gracilibus rectis denticulatis basi latis; angulo 

 oris sulco parvo labio inferiore quam labio superiore paulo longiore. Dorsali 

 prima pectoralibus multo magis quam ventralibus approximate. Dorsali sec- 

 unda quintuplo circiter ejus longitudinis a dorsali prima remota, dorsali prima 

 triplo circiter humiliore et breviore, longiore quam alta, anali tota opposita 

 apice rotundata acutiuscula; pectoralibus capite vix longioribus 5| circiter in 

 longitudine corporis paulo minus duplo longioribus quam latis, emarginatis, 

 acutis ; anali medio basin caudalis inter et ventrales sita, dorsali secunda multo 

 altiore sed vix latiore; caudali 4 fere in longitudine corporis. Colore corpore 

 superne pinnisque cupreo-coerulescente, inferne albo; pectoralibus inferne albis 

 apice nigricantibus; ventralibus caudalique nigricante marginatis." (Bleeker 

 he. tit.). 

 Java. 



Carcharinus falciformis. 



Carcharias (Prionodon) falciformis Muller & Henle, 1841, Plagtos., p. 47; Dumeril, 1865, Elasm., 



p. 374. 

 Prionodon falciformis Guichenot, 1855, Peces de Cuba. Sagra's Hist., p. 248, pi. 5, f. 3. 

 Squalus tiburo Poey, 1860, Memorias Cuba, 2, p. 331, pi. 19, f. 1, 2; 1868, Repertorio, 2, p. 172, pi. 4, 



f. 18. 

 Platypodon tiburo Poey, 1868, ibid., p. 448. 



Platypodon falciformis Poey, 1868, ibid., p. 449, pi. 4, f. 18; 1876, An. Soc. Esp. hist, nat., 5, p. 191. 

 Carcharinus falciformis Jord. & Everm., 1896, Bull. 47, U. S. nat. mus., p. 36. 



Snout and shapes of body and fins as in C. menisorrah. Nostrils hardly 

 half of the diameter of the eyes, orbits oblong. Teeth in 30 rows; upper oblique, 

 with a notch and a strongly denticulate basal process; lower without or with 

 faint serrations, cusp narrower, on a broad base; median paired. Pectorals 

 moderate, falciform, hind margin deeply concave. First dorsal nearer to the 

 pectorals than to the ventrals, outer angle rounded, hinder pointed, hind margin 

 deeply indented. Second dorsal small, directly above the anal. Anal little 

 larger than the second dorsal, hind margin deeply notched, acuminate extremity 

 reaching little more than half way from the base to the caudal. Caudal more 

 than one fourth of the total, lower lobe prominent. 



Greyish brown; lower surfaces light. 



West Indies. 



