REPORT OF COMMISSIONER OF FISH AND FISHERIES. [lOj 



Family XVI.— EHINODONTID^. (13) 



30.— MICRISTODUS Gill. (30) 



54. MicristoduB punctatus Gill. P. (40) 



Family XVII.— SQUATINID^. (16) 



31.— SQUATINA Dum6ril. (33) 



55. Squatdna squatina ' Linuaeus. C. N. Yni. (43) 



Order G.— RAI^. (E) 



Family XVIIL— PRISTIDID^. (17) 



32.— PRISTIS. Latham. (34) 



56. PristLs pectinatus Latham. W. S. (44) 



57. Pristis perrottetii* Miiller «fe Heule. P. 



Family XIX.— EHINOBATID^. (18) 



33.— RHINOBATUS Bloch & Schneider. (35) 

 $ Bhinoiatus. 



58. Rhinobatus productus Ayres. C. (45) 



59. Rhinobatus glaucostigma* Jordan & Gilbert. P. 



60. Rhinobatus lengtiginosus Garman. W. (45d) 



§ Zapteryx. Jordan & Gilbert. 



61. Rhinobatus ezasperatus Jordan & Gilbert. C. P. (456) 



§ Platyrhinoidis. Garman. 



62. Rhinobatus triseriatua Jordan & Gilbert. C. (4oc) 



' ^ Our reasons for retaining the original specific name, even when identical with the 

 name of the genus, have been given in full in Proc. U. S. Nat. Mus., 1884, 18. The 

 same view of the case has been adopted by the American Oraithologists' Union. 



^Pristis perrotteti Miiller & Henle. Rostral teeth in 18 or 90 pairs, not trenchant 

 behind ; distant from one another, the base of each tooth being about one-third the 

 interspaces. Dorsal fin nearly in advance of ventrals. Root of pectoral in advance 

 of first gill-opeuiug, its outer angle a right one. Second dorsal not much smaller 

 than first ; a smaller lower caudal lobe. (Giinther.) Tropical seas, north to Mazatlan, 

 on the Pacific coast. 



(Muller & Henle, 108; Gunther, VIU, 436; Jordan & Gilbert, Bull. U. S. Nat. 

 Mus., 1882, 105.) 



^Bhinobatus glaucosfigma Jordan & Gilbert, Proc. U. S. Nat. Mus., 1883, 210. 

 Mazatlan ; Gulf of California. 



