4 U.S. NATIONAL MUSEUM BULLETIN 202 Vol. 3 



16. Lower jaw notably projecting in front of snout, chin usually swollen forming 



part of dorsal profile of head; pelvic rays 1,3 to 5; body naked or scaled 



or with embedded scales. 



3a. First 4 to 6 dorsal rays nonstriated or feeble spines followed by about 



13 to 18 striated or soft rays; tongue bilobed at tip; gill membranes 



free forward, not restricted to sides; eyes superior in position; 



body naked or scaled Kraemeriidae 



36. First 12 to 22 dorsal rays nonstriated feeble spines, closely followed by 

 about 22 to 55 soft or striated dorsal rays; tongue simple at tip, 

 gill membranes restricted or not restricted to sides of head; eyes 

 lateral to almost superior position; body naked or with minute 

 embedded scales Microdesmidae 



KEY TO THE GENERA OF KRAEMERIIDAE AND MICRODESMIDAE 



la. Dorsal fin rays totaling fewer than 25; anal fin rays fewer than 17, tongue 

 bilobed at tip;i dorsal and anal fins free from caudal fin. (Kraemeri- 

 idae.) 

 2a. Opercular opening not restricted to side of head, gill membranes free far 

 forward along isthmus. 

 3a. Single dorsal fin, feeble spiny portion connected with soft-rayed 

 portion; pelvic rays 1,5; body naked; eyes superior in position. 

 4a. Pelvic fins not united along midline; edges of maxillary, dentary, 

 preopercle, and subopercle scalloped; dorsal rays V,14 or 15; 



anal 1,11 to 14; pectoral rays 4 to 8 Kraemeria Steindachner 



46. Inner pelvic rays joined by membrane along edges; dorsal fin rays V 

 or VI, 17 or 18; pectoral 9 or 10; anal rays total 14 or 15; no 



scallops anywhere on head Qobitrichonotus,^ Fowler 



36. Two dorsal fins, first feeble spines not connected with soft-rayed part 

 of dorsal fin; pel vies 1,4, not joined by membrane; body scaled; 

 eyes lateral; anal rays 1,13 or 14; dorsal fin rays V-15, pectoral 15. 



Kraemericus, new genus 



26. Opercular opening restricted to side of head, gill membranes joined to 



isthmus; single dorsal fin, with about IV, 16 rays; anal rays about 1,13; 



pectoral 15; pelvics 1,5; body naked; lower jaw not entering dorsal 



profile of snout Parkraemeria' Whitley 



16. Dorsal fin single, rays totaling more than 30; anal rays more than 24; tongue 



simple at tip. 



5a. Opercular opening extending forward along isthmus, gill membranes 



free from it; dorsal and anal fins confluent with caudal fin; dorsal rays 



about 78; anal 62; pectoral 15; body naked; jaws equal or nearly so. 



Pholidichthys* Bleeker 

 56. Opercular opening restricted to side of head or gill membranes joined 

 across isthmus with free fold. 



' This character not recorded for Parkraemeria. 



2 GoMtrichonotus Fowler, U.S. Nat. Mus. Bull. 100, vol. 14, pt. 2, p. 85, fig. 22, 1943 (type species, Gobit- 

 richonotus radiocularis Fowler; holotype USNM 99549, paratype USNM 99550). 



' Parkraemeria Whitley, Rec. Australian Mus., vol. 22, p. 402, fig., 1951 (type species, Parkraemeria ornata 

 Whitley). 



* PholidicUhys Bleeker, Nat. Tidschr. Nederl.-Indle, vol. 11, pp. 385, 406, 1856 (type species, Pholidichthys 

 leucotaenia Bleeker). 



