2Q, PAPERS FROM TORTUGAS LABORATORY vol. xxxiv 



to upper angle of gill slit, 3.2; depth 3.2; snout to base of dorsal spine 3.1. Eye in 

 head 5.5; snout 1.1; interorbital 4.45; caudal peduncle 2.5. D. 48; A. 51. 



The large number of fin rays distinguishes this species readily from A. 

 schoepfii and A. ventralis, but not so readily from A. guentheriana, from which 

 it differs prominently in the more slender body. 



Known from many tropical seas, ranging northward on the coast of the 

 southern Atlantic states. S. F. H. 



Alutera guentheriana Poey 



A single specimen was taken in the 10-fathom channel east of Loggerhead 

 bank. It had a total length of 167 mm.; length to base of caudal 137 mm.; depth 

 between dorsal and anal origins 55 mm.; head to upper angle of gill opening 45 

 mm.; gill opening 13 mm.; eye 10 mm.; orbital margin to base of dorsal spine 

 10 mm.; dorsal spine 33 mm.; D. I-49; A. 50; pectoral rays 14; caudal short and 

 rounded (if there was any slight tendency to assume a double lunate form, it 

 was masked by injury). 



Not seen alive. The preserved specimen had about six dark spots along base 

 of dorsal and five at base of anal, alternating with light areas; round dark spots 

 on body with the same general arrangement as in Alutera scripta, but fewer. 

 Caudal dark, with three faint light lines crossing basal two-thirds. W. H. L. 



The large specimen mentioned above was not found. The collection contains 

 3 specimens, however, about 76, 87, and 90 mm. long (caudal damaged in each), 

 53, 70, and 72 mm. to base of caudal, which I have identified as belonging to this 

 species. It is evident from the measurements above and those that follow that 

 this fish has a body fully as deep as A. ventralis, from which species it differs 

 prominently in the more numerous dorsal and anal rays. The following propor- 

 tions and enumerations are based on the 3 specimens just mentioned: Head, 

 measured to upper angle of gill slit, 2.9, 3.1, 2.9; depth at dorsal spine 2.1, 2.1, 

 2.25, at origin of second dorsal 2.8, 2.4, 2.5; snout to dorsal spine 2.9, 2.9, 3.1. 

 Eye in head 4.25, 4.3, 5.0; snout 1.3, 1.2, 1.3; interorbital 4.0, 3.8, 4.2; caudal 

 peduncle 3.6, 3.3, 3.8. D. 46, 46, 48; A. 48, 47, 50. The dorsal spine is injured in 

 each specimen, but it appears to be stocky, probably shorter than in A. schoepfii, 

 and with larger barbs. 



The color is about as described by Dr. Longley for the larger specimen, except 

 that the dark spots and blotches mentioned form most of the ground color, and 

 the paler color, except on the abdomen, is reduced to little more than reticulations. 



West Indies and Florida, apparently sometimes straying northward. 



S. F. H. 

 Monacanthus ciliatus (Mitchill) 



The young of this species were taken, with those of Monacanthus hispidus, in 

 turtle grass at Long Key and elsewhere. 



In 50 specimens the range in fin formulas is D. 31 to 36; A. 30 to 35, the most 

 frequent combinations being D. 33 to 35; A. 32 or 33. 



In a tank planted at one end with turtle grass and at the other covered with 



