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MEMOIRS OF THE CARNEGIE MUSEUM. 



one Hydrachnid. The other stomach came from a specimen 180 mm. long and 

 held eighteen dipterous larvae and one large Odonate larva. Both specimens 

 were from Santarem. 



(4) Sternarchorhynchus oxyrhynchus (Miiller and Troschel). 



Head produced into a long, decurved, tubular snout; mouth very small, 

 terminal, and inferior; teeth minute in both jaws; size moderately large. The 

 table lists the contents of the stomachs of three small specimens. 



(5) Sternarchorhamphus mulleri (Steindachner). 



Head produced into a long, straight, tubular snout; mouth rather small and 

 somewhat inferior; teeth minute in both jaws; size large, reaching 800 mm. in 

 length. Two stomachs of this species were examined and the contents are stated 

 in the following table : 



The food of the last two species, S. oxyrhynchus and S. mulleri, consisted 

 almost entirely of mud-inhabiting forms. The Annelida were small mud-worms 

 and the dipterous larvae were similar to the North American "Blood Worm." 

 In addition to the food listed in the foregoing table and that given with the pre- 

 ceding species large amounts of mud were found in all stomachs of these species 

 which were examined. There is thus a great similarity between the contents of 

 the stomach of these two species and of Rhmnphichthys rostratus. Not only 

 were the same forms eaten by these three species, but they were evidently taken 

 in the same manner. The anterior thirds of these three species are similar. All 

 three have the head produced into a long tubular snout. The snout of S. oxy- 

 rhynchus is decurved so that the mouth is on a level with the outer edge of the anal 

 fin. The snout of Rhaniphichthys rostratus is straight but is joined to the rest 

 of the head at an angle to the long axis of the body so that it is directed downward. 

 This places the mouth on a level with the origin of the anal fin. The mouth is 



