Occasional Papers of the Museum of Zoology 7 



Porto Rico. Dorsal ray-chambers, 227 to 231 ; preanal ray- 

 chambers, TfT, to 35. Highest dorsal ray-chambers about three 

 times as high as long; dorsal fin about one-eighth as high as 

 body. Anus located near middle of lower caudal lobe ; dis- 

 tance from atriopore to origin of lower caudal lobe about equal 

 to distance thence to end of tail. Preatrioporal length about 

 2.5 times the postatrioporal length. Myotome formula : 2y 

 to 37+12 to 14+9^^48 to 61 (most of the counts made by 

 Andrews, 1893). ^Maximum length, 5.1 cm. (Sundevall). 



7. Branchiostoma floridae Hubbs, new species 

 Branchiostoma lubricuni Goode (1879). 

 Amphioxus Wright (i8go). 



Branchiostoma caribaeum Andrews (1893, in part) ; Evermann and 

 Kendall (1899), and other authors (in part). 



Ainphioxiis caribaciis Kirkaldy (1895), and other authors (in part). 



Type-material: — Holotype, Cat. No. 84466, U. S. National 

 Museum ; collected at Tampa Bay, Florida, by the Steamer 

 Fish Hawk (Sta. 7121). Paratypes from Tampa Bay (sev- 

 eral collectors) are deposited in the U. S. National Museum, 

 the fish collection of Stanford University, Museum of Zoology, 

 and the Field Museum of Natural History. Other paratypes 

 from Pensacola, Florida (collected by Benedict and Kaiser) ; 

 from Cape Romans, Florida (collected by J. F. Moser) ; from 

 St. Martin's Reef, Florida; from lat. 26° 20' N., long. 82° 39' 

 \V. and station 5068, both collected by the steamer Grampus, 

 and from "Florida" (collected by Henderson and Simpson), 

 also belong to the U. S. National Museum. Other records for 

 the species are Port Tampa, Florida (Wright,. 1890) ; Port 

 Tampa and St. Martin's Reef, Florida, and "Gulf of Mexico'' 

 (Andrews, 1893) ; Tampa Bay and Snapper Banks, Florida 

 (Evermann and Kendall, 1899), and East Florida (Goode, 

 1879). 



Diagnosis: — Dorsal ray-chambers, 274 to 310 (average of 



