PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 367 



60. Harpe diplotasnia Gill. 



{Harpe (liploUcnia Gill, Proc. Ac. Nat. Sci. Phila. 18G2, 140 (9 ?): Harpe pectoralis 

 Gill, Proc. Ac. Nat. Sci. Phila. 1832, 141 ( $ ). 



4441. (Types of Earpe dlplotmiia.) One specimeu, 9 inches lonjj^, in 

 alcohol. 



2986. Stnfifed skin of achilt ; also one of the original types. 



6430. {Harpe pectoralis ; not type ; record of locality and collector 

 lost.) A specimen, about 10 inches long, in spirits. 



2988,8867. (Stuffed skins; types oi Harpe pectoralis.) 



These two forms have been well described by Professor Gill. We 

 are uuable to find any constant difference between them except in the 

 color. It is not improbable that pectoralis is the male and diplotwnia 

 the female of the same species. The form aaWQd pectoralis is certainly 

 the male. 



61. Julis lucasanus Gill. 



{Jidis lucasanus Gill, Proc. Ac. Nat. Pbila. 1862, 142.) 



3676, 3677. (Typ'es of Julis lucasanus.) Young aud half-grown ex- 

 amples, in good condition. 

 4396. Two adult and one young example. 



62. Xyrichthys mundiceps Gill. 



(Xirkhfliys mundiceps Gill, Proc. Ac. Nat. Sci. Phila. 1862, 143.) 



4370. (Types of Xirichthys mundiceps.) One half-grown and several 

 small examples. 



8082. (Types.) Very many young examples, in poor condition. 



30929. Three adult males and one female (not types). 



The large specimens last mentioned were received after the publica- 

 tion of Professor Gill's papers. The female exami)le is plain light 

 browni.sh like the original types. The males are darker, with a narrow 

 vertical blue or violet line at the base of each scale, these most distinct 

 and broadest on caudal peduncle. A conspicuous jet-black spot, rather 

 larger than the eye, at base of caudal, just below lateral line. Three 

 concentric blue curved lines on flap of cpercle. Three narrow blue lines 

 downward and forward from eye across cheek. Lower jaw aud lower 

 side of head with blue strii)es and lines, the one connecting angles of the 

 mouth below broader than the others. Fins pale ; now plain. 



In the male the body is deeper than in the female, and the anterior 

 profile is steeper. The largest of the original types is a male, and still 

 shows traces of the dark caudal spot. 



63. Novacula mundicorpus (Gill) Giinther. 



{Iniistius mundkorpus Gill, Proc. Ac. Nat. Sci-. Phila. 1862, 145.) 



7o88. One adult example, probably a male, 7 inches in length, evi- 

 dently not tbe original type. 



Color olivaceous, whitish below ,• three broad bars of dark olive on 

 the back and sides, these bars nearly as wide as the interspaces. 



