1903.] NATURAL SCIENCES OF PHILADELPHIA. 515 



58. Cheirodon annae McAtee sp. nov. 



Type No. 4.301a, 43 mm. South America. 



Co-types No. 4,301 (14 specimeiLs). South America. 



This species bears considerable resemblance to pisciculus, from which 

 it may be distinguished by the absence of more than one maxillary 

 tooth; the head 3-4 instead of 5, and the dorsal 9-12 instead of 10. 



Depth 3f ; head 4^; D. 11 ; A. 15; scales 7-32-5. Four five-pointed 

 teeth on each side of the intermaxillary, the median points longest. 

 Maxillary with a single four-pointed tooth, but little smaller than 

 those of the intermaxillary. In the lower jaw there are six four- 

 pointed teeth on each side, largest in the middle and grading to quite 

 small ones at the sides. 



Origin of the dorsal nearer the base of the caudal than tip of snout. 

 Pectorals not to ventrals; ventrals not to anals. Coloration (in alco- 

 hol) dark olive ; belly light golden ; a silvery band from base of caudal 

 to angle of opercle margined above by blackish. Sides of head silvery. 



The co-types show considerable variation. Some have 5 teeth on 

 each side of intermaxillary and lower jaw. Two have no teeth in the 

 maxillaries. Other variations as follows: 



Dorsal 9-12; anal 12-15; scales 6 or 7-32 to 36-5 or 6; depth 4^ 

 -3|; head 4i-3|; eye in head 3^2|-. 



Details of specimens : 



Min. Max. Average. 



Length in mm 29.0 43.0 37.2 



Dorsal 9.0 12.0 



Anal 12.0 15.0 



Depth 3.4 4.2 



Head 3.4 4.2 



Eye 2.8 3.2 



Teeth in maxillary 1 1 



Perforated scales 7 9 



Scales 6 to 7-32 to 36-5 to 6. 



(The above description is by one of my students, Mr. Waldo Lee 

 McAtee, who dedicates the species to his mother. — C. H. E.) 



59. Cheirodon insignis Steindachner. 



Chirodon insignis Steindachner, Fisch-Fauna des Cauca und Fhisse bei 



Guayaquil, 22, PI. VI, fig. .3, ISSO (Cauca.). 

 Cheirodon insignis Ulrey, Ann. N. Y. Acad. Sci., VIII, 291 (Para, Brazil). 



A number of specimens of this species are in the collection. They 

 were mostly confounded with Hemigrammus luetkeni. In all the 

 specimens the caudal spot is large and sharply defined, not extending 

 to the tip of the rays. It is bordered in front l)y an area of greater or 



