CARAGOBIUS 287 



According to the original description there is "a small pore 

 above each gill opening which opens into a cavity separate from 

 gill cavity." A careful examination of seven specimens fails to 

 reveal the existence of any such pore or cavity where the skin 

 is unbroken. The skin is easily torn and might then seem to 

 have a pit as described above. 



145. CARAGOBIUS TYPHLOPS Smith and Scale 



PLATE 23, FIG. 1 



Caragobius typhlops SMITH and SEALE, Proc. Biol. Soc. Washington 

 19 (1906) 81, with text figure. 



Dorsal VI, 1-28 or 29; anal I, 33 or 34. 



The body slender, elongate, much compressed laterally, with 

 large, almost quadrangular head; the upper and lower profiles 

 nearly horizontal, tapering gradually toward caudal ; the greatest 

 depth 6.7 to 9 times, the head 5.3 to 5.5 times in length; the head 

 very broad, its width equal to or five-sixths of its depth, which 

 is equal to or 0.6 of the depth of body ; the snout short, convex, 

 very wide and blunt, 3 to 3| times in head; the mouth nearly 

 vertical, with a very heavy, projecting, blunt lower jaw; the 

 eyes are black dots under the skin ; the interorbital space broad, 

 3 to 5 times in head, equal to or 1.5 times in snout; the caudal 

 peduncle narrow, its depth 3.3 to 5 times in head; the dorsals 

 connected, the dorsal and anal low ; the caudal probably pointed, 

 shorter than and apparently about 2 in head ; the pectorals very 

 broad, rounded, 2 to 2.5 in head ; the ventrals pointed, equal to 

 or a little more or less than depth, 0.55 to 0.8 of head; anal 

 papilla short, round tipped. 



The color in alcohol uniform yellowish, becoming whitish orr 

 belly and underside of head or uniform yellowish gray poste- 

 riorly, the anterior third bluish gray. 



Here described from seven specimens, 35 to 54 millimeters in 

 length, collected by Doctor Morse in 1903, from the Rio Grande 

 de Mindanao, at Cotabato. They are cotypes ; the type is in the 

 United States National Museum. 



Owing to the distorted condition of the specimens and the 

 mutilated condition of the dorsal, anal, and caudal fins the de- 

 scription is necessarily imperfect. In the original description 

 the depth is given as 2, which is evidently a typographical error. 

 The probabilities are that the depth is about 7 times in the 

 length in life. This is a unique species, not to be confused with 

 anything else. 



