148 U.S. NATIONAL MUSEUM BULLETIN 202 Vol. 2 



Table 97.—Count» recorded for species referable to Hemipteronotus and Xyrichthys. 



KEY TO THE SPECIES OF HEMIPTERONOTUS OF THE TROPICAL INDO-PACIFIC OCEAN 



la. Patch of scales below eye reaching to opposite rear corner of mouth or below 

 corner of mouth. Large cream-colored (red when alive) blotch behind 

 pectoral fin usually present. 



2a. Dark dorsal blotch (occasionally absent in preserved specimens) located 

 on or opposite lateral line pores 8 to 10, sometimes extending farther 

 below lateral line than above, this spot 1 to 3 scales wide and 2 to 5 

 scales high; adult males, sometimes females, with black spots on last 

 two soft rays of anal or dorsal fins or on both; sometimes a dusky 

 streak occurs along middle of side H. melanopus ^* (Bleeker) 



2b. Dark dorsal blotch located above and opposite lateral line pores 15 or 16, 

 covering about 2 or 3 scales H. jenkinsi *° Snyder 



2c. Dark blotch located on or below lateral line or wholly below lateral line. 



3a. Dark blotch notably large, located on and below lateral line pores 7 to 

 11, covering 4 to 6 vertical scale rows and 6 or 7 lengthwise scale 



'•ATopocuZa melanopus Bleeker, Act. Soc. Sci. Indo-N6erl., vol. 2, p. 82, 1857 (type locality, Amboina); 

 Atlas ichthyologique . . ., vol. 1, p. 152, pi. 29, fig. 3, 1862. 

 Novacula spilonotus Bleeker, Act. Soc. Sci. Indo-N6erl., vol. 2, p. 83 (type locality, Amboina); Atlas ichthy. 



ologlque . . ., vol. 1, p. 151, pi. 30, fig. 3, 1862. 

 Novacula twistit Bleeker, Nat. Tijdschr. Nederl.-IndiS, vol. 10, p. 381, 1856 (type locality, Ternata); Atlas 



ichthyologique . . ., vol. 1, p. 152, pi. 29, fig. 1, 1862 (Ternata). 

 Novacula stockumi Reuvens, Notes Leyden Mus., vol. 16, p. 131, 1894 (type locality. Paternoster Islands). 

 Hemipteronotus evides Jordan and Richardson, Mem. Carnegie Mus., vol. 4, p. 196, pi. 72, 1909 (type locality, 



Formosa). 

 Hemipteronotus nigromaculatus Herre, Copeia, No. I, p. 20, 1933 (type locality, Jolo, Philippine Islands). 

 Hemipteronotus baldwini Jordan and Evermann, Bull. U. 8. Fish. Comm., vol. 22 (1903), p. 192, 1904 (type 



locality, Honolulu, T. H.). 



The holotype (USNM 50644) and 6 paratypes (USNM 55359 and 12658) of H. baldwini along with other 

 specimens from the Hawaiian Islands have been studied. 



" Hemipteronotus jenkinsi Snyder, Bull. U. S. Fish. Comm., vol. 22 (1903), p. 530, pi. 10, fig. 10, 1904 (type 

 locality, Puako Bay, T. H.). 



Diagnosis based on holotype (USNM 50879). 



