32. ANACTRXTTS. 347 



b. Intermaxillary teeth in a single series ; scales very small : Hcestes. 

 3. Anacyrtus molossas. 



Cynopotamus molossus, Kner, Denkschr. Acad. Wiss. Wien, 1860, xviii 

 p. CI. taf. 7. fig. 16. 



D. 10. A. 46-50. V. 8. 



Intermaxillary and maxillary with a single series of teeth, the 

 former with canines ; teeth of the mandible in a double series, the 

 outer one containing canine teeth, those of the inner being small, 

 equal in size. The height of the body is one-third of the total length 

 (without caudal), the length of the head one-fourth. The upper 

 profile of the head is very slightly concave ; head broad, its width 

 being nearly one-hall' of its length. Humerus broad, with a notch 

 for the first pectoral ray. The dorsal fin commences midway between 

 the extremity of the snout and the root of the caudal. Pectoral ex- 

 tending nearly to the vent. (Kner.) 



Brazil. 



2. Jaws with external tooth-like processes ; scales very small : Mceboides. 



4. Anacyrtus microlepis. 



Epicyrtus gib*bosus, Cuv. fy Val. xxii. p. 43 (not L.). 



microlepis, Reinh. Vidensk. Meddel. Naturh. Fwen. Kjobenh. 1849, 



p. ; Kner, Denkschr. Acad. Wiss. Wicn, 1860, xviii. p. 47. taf. 6. 



fig. 13. 



D. 11. A. 60. L. lat. 110. 



Upper and lower jaw with short, conical, tooth-like processes 

 directed outwards ; teeth in the intermaxillary in two rather irregular 

 series, without canines ; maxillary with a few small teeth near its 

 articulation ; mandibulary teeth in a single series, with very small 

 canines. Back elevated, the upper profile of the head being concave. 

 The height of the body is contained twice and two-thirds in the 

 total length (without caudal), the length of the head four times. 

 Humeral and caudal spots present. 



Brazil. 



5. Anacyrtus guatemalensis. 

 D. 11. A. 51. V. 8. L. lat. 80. L. transv. 19/22. Vert. 12/22. 

 Upper and lower jaw anteriorly on each side with a short, conical, 

 tooth-like process directed forwards ; teeth in the intermaxillary, 

 maxillary, and mandible in a single, rather irregular series ; no canine 

 teeth in the upper jaw, those in the lower small and short. Back 

 elevated, the upper profile of the head and nape forming an S-sbaped 

 curve. The height of the body is contained twice and three-fourths in 

 the total length (without caudal), the length of the head four times. 

 The lower jaw is rather shorter than the upper ; the maxillary extends 

 nearly to the vertical from the centre of the eye. The width of the 

 interorbital space is a little less than the diameter of the eye, which 

 is two-sevenths of the length of the head. The humeral process in 

 front of the pectoral terminates in a point anteriorly and posteriorly. 



