A REVIEW OF THE DRAGONETS (CALLIONYMID.E) AND 

 RELATED FISHES OF THE WATERS OF JAPAN. 



By David Starr Jordan and Henry W. Fowlek, 



Of the Leland Stanford Junior University. 



In this paper is given an account of tlie Calli(myriddai of Japan. 

 It is based on specimens collected by Jordan and Snyder in the summer 

 of 1900 and specimens collected by the U. S. Fish Commission steamer 

 Alhafross. Series are deposited in the United States National Museum 

 and in the museum of Leland Stanford Junior University. 



Two families may be recog-nized among- the Japanese Dragonets: 



a. Preopercle unarmed; opercle and subopercle rudimentary, each with astraightish, 



sharp spine; no lateral line; gill openings moderate Dracoxettid.e, I. 



aa. Preopercle with a long spine at its angle; opercle unarmed; lateral line present; 

 gill openings very small Callionymid^) II. 



Family I. DRAC0NP:TTID.F]. 



This family is allied to the Call ionijm Ida', diflering very widely in 

 the armature of the head, the preopercle being entire, the opercle and 

 subopercle reduced, each consisting mainly of a nearly straight, sharp, 

 simple spine. The gill openings are much wider than in ('al//'(mi/i))(/s, 

 but the gill membranes are broadly united to the isthnms. No lateral 

 line. In spite of the singular armature of the head, this group prob- 

 ably belongs near to the Calllonymidx, which family it resembles in 

 external characters. It has also much in conunon with Bemhroj)s and 



1. DRACONETTA Jordan and Fo^A^ler. 

 Thneonettti Jordan and Fowlkk, new genus {.renka). 



The characters of the genus are included above. 



{draconettd, a quasi-Latin form of the English name Dragonet.) 



I. DRACONETTA XENICA Jordan and Fowler, new species. 



Head, 3i in length; depth, T; D. III-12; A., 12; P., 23; V. 1, 5. Body 

 elongate, compressed in front, and with the greatest depth about the 

 anterior dorsal region, the trunk more or less rounded, and tapering 

 behind. Head moderately large, compressed above so that its greatest 



Proceedings U. S. National Museum, Vol. XXV— No. 1 305. 



