416 PEOCEEDIXGS OF THE NATIOISTAL MUSEUM vol. 8S 



dentary backward just above pectoral fin base and along base of anal 

 fin, uniting into a single streak along midventral line of caudal 

 peduncle; very intense black spot at midbase of caudal fin rays. 



JADAMGA, new genus 



FlGtTKB 20, C 



This genus, based on the species Jadamga qidiiquel Ineata (Cuvier 

 and Valenciennes), differs from the closel}" related genera Cheilodlp- 

 terus and Cheilodipterops in regard to the teeth in the jaw, there 

 being no canines at tip of lower jaw, as shown in figure 20, <?, and in 

 the key (p. 406) . 



Genotype. — Cheilodiptctms qumqiieUneatus* Cuvier and Valen- 

 ciennes. 



The diagram (fig. 20, c) is based on a sketch of the holotype by 

 Chabanaud and on U.S.N.M. Xos. 52296 and 65976. 



Genus SYNAGROPS GUnther 



FiGrKE 19, e 



Melanostoma SiBaNDACHXEB and Dodeblein, Deukschr. Akad. Wiss. Wieii. 



math.-nat. Classe, vol. 48, p. 5, 1883. (Orthotype, Melanostoma japoviciim* 



Steindachner and Doderlein.) 

 8ynag7-ops* Guntheb, Report on the scientific results of the voyages of H. M. S. 



Challenger during the years 1873-76, vol. 22, pt. 57, p. 16, 1887. (Type, 



Melanostoma japoniciiia Steindachner and Doderlein ; substitute name for 



Melanostoma Steindachner and Doderlein, preoccupied.) 

 Parascomhrops Alcock, Journ. Asiat. Soc. Bengal, vol. 58, pt. 2, p. 296, 1889. 



(Type, Parascomhrops pellucidus Alcock.) 

 Eypoclydonia* Goodb and Bean, Oceanic ichthyology, p. 236, 1895. (Type, 



Hypoclydonia iella* Goode and Bean: U.S.N.M. No. 39338, type.) 

 Amioides* Smith and Radcuftb, in Radcliffe, Proc. U. S. Nat. Mus., vol. 41, 



p. 439, 1912. (Type, Amla (Amioides) grossidens* Smith and Radcliffe: 



U. S. N. M. No. 70250, type.) 

 Maccullochina Joedan, in Jordan and Jordan, Mem. Carnegie Mus., vol. 10, No. 1. 



p. 44, 1922. (Type, Synagrops serratospinosa* Smith and Radcliffe : U.S.N.M. 



No. 70254, type.) 



KEY TO THE SPECIES REFERRED TO SYNAGROPS 



Iff. Anterior edge of pelvic spines serrated. 



2a. Anterior edge of second spine of first dorsal and of anal fin serrated. 

 3a. Anterior edge of spine in second dorsal serrated ; no small keels on outer 

 surface of posterior portion of preoperculura near lower angle. 



serratospinosa Smith and Radcliffe 

 3&. Spine of second dorsal smooth ; 2 or 3 small keels on outer surface of 

 posterior portion of preoperculum near lower angle. 



spinosa, new species 

 26. Anterior edge of no spine in dorsal or anal fins serrated. 



4cr. No keels on outer surface of posterior portion of preoperculura near 



lower angle philippinensis (Giinther) 



4&. Three keels on outer surface of posterior portion of preoperculum near 

 lower angle argyrea (Gilbert and Cramer) 



