138 CATALOGUE OF ttSH. 



Diagn. The small mouth, when fully open, has a diameter about 

 equal to that of the eye. Anus beneath the head, situated about 

 the middle of its length. 



Descr. Teeth scarcely perceptible, occupying two small surfaces 

 on both jaws. Front nostril in a longitudinal oblong of the bulg- 

 ing tube. Hinder one a pretty distinct orifice, situated before 

 the eye. Mucus pores on the head and nape. Two dark stripes 

 run between the lateral line and the anal fin, and one that fades 

 away traverses the anal fin itself. A specimen in the Paris Museum 

 is almost black. 



Total length 7-80 in. 



Diameter of the eye 0-16 ,, 



From the point of the snout to the eye . . . 0-24 ,, 



Distance between the eyes . . . . . 0-24 „ 



Length of the pectoral fin . . . . • . 0-67 ,, 



From the point of the snout to the gill-opening . . 0-95 ., 



,, ,, to the anus . . . 0-51 „ 



Greatest height of the body 1-20 ,, 



In the Berlin specimen there projects from the abbreviated 

 extremity of the tail a golden brown thread, which measures about 

 l-18in.,-and seems to be the most distal filamentous caudal ver- 

 tebrfe which have been stripped by accident of their integuments. 

 The specimen described by Professor Valenciennes has, according to 

 the inaccurate sketch of D'Orbigny, a length of snout of 1-97 in. 

 The hinder border of the gill-plate still exists, and is absent in one 

 side only, which has accidentally been deprived of half the spine. 

 How the authors cited have been led to confound this species with 

 St. Troscheli is to me unknown. 



Brazils. Lagoa Santa {Reinhardt). 



16. Stebnopygus lineatus. 

 Sternopygus lineatus, Milll. d Trosch. I. c. 14. 



Diagn. Mouth small ; anus near the gill-opening. 



Descr. Resembles the preceding species, but has a shorter snout, a 

 somewhat larger mouth, a more compressed body, and a conspicuously 

 longer tail. It has also a band of card-like teeth, extending to the 

 entire breadth of the premaxillaries. There are two longitudinal 

 stripes above the anal fin like those of virescens, but more distinct. 

 The Berlin specimen, 4| in. long, is not very young. 



Total length 1091 in. 



Diameter of the eye 16 ,, 



From the point of the snout to the eye . . . 0-20 ,, 

 Breadth and height of the mouth .... 020 ,, 

 From the point of the snout to the edge of the gill- 

 plate 0-83 ,, 



From the point of the snout to the occiput . . 03 ,, 



