i<iu\siNii \\i> \\i imokk: imi iiiiiiis. KiO 



"S. r<'li-caims ipiMUtor! ru.vtnt s«Tr;il<», camla iiinciforiiii. 

 .4. Anwri hajwniut :UTiiiis fuscii nvii). Sloiiric jam. 

 li. Anwri hassaiio connciu'r (•iucn-o-anms. Sldaiic jam. 



pra-f. ;n. t. i\. f, I. Haj. avrs HM. 

 Bubl)i rhiiuMisibuH. 

 Huju8 duu adsunt scxus. 

 MAS (a) tot us nijjcr, nbdomiuc raiu*80ont<'. 

 FKMINA (/?) t<»ta all)ida, rcinijiibus ni(cris. 

 liostrum utrisqiK* Kiblnitii, in f(riiiiiia pra-cipuc sunguinemn, 



inarninr t«'iiui!<.siini' rcfrorsum 



serrato. 

 Gula nittra. 



Corpus magnitudiiu' anatis majnris. 

 Pedes sanguinei, niagni, tetradartyli, digitis omnibus com- 



muni mombrana junctis; unguis intcrmodii marpo interior 



dilatatus <X: fere jK>ctinatus. 

 Ala utrius que sexu.'* sulitus albicant. 

 Reetriccs cnudac Xl\', intcrioribus scnsim longioribus, in 



fcrniina etjam pariim fuscescentibus." 



There is little qiu'stion that the male and female described above 

 belong to separate species of which the female is the bird now known 

 as Suh piscator. 



Linne himself recognized that this name covered a mixture of two 

 species, and in his twelfth edition of the Systema naturae flTfXl, p. 

 217) he again gives Prlrcnnus pi.scalor with a slightly different diagno- 

 sis, and the reference "Amoen. acad. 4, p. 239. femina." This cita- 

 tion refers to the reprint published in 1759, on page 239 of which is 

 found the description as (|Uoted alcove. Linne as first re\'i.ser of the 

 species has here restricted the name Prlrranns piscaior to the female 

 of the bird described by Odhelius, and there can be no doubt but that 

 the Red-footed booby is intended. Mathews objects to Linn^'s 

 statement that the flight feathers are black on the grounds that in 

 the Re<l-footed booby the outer webs of the quills have a hoary gray 

 appearance. This is true, but at the same time the body color of the 

 feather is black, and to a casual inspection the entire feather appears 

 blackish. The older naturalists were not so critical of color differences 

 as are ornithologists today, so that we may overlook this slight error 

 as the rest of the description tallies closely. Because of this state- 

 ment that the wing feathers are black Mr. Mathews suggests that the 

 bird described was Sula abbotti Ridg\^'ay, a species with inten.sely 

 black flight feathers. This cannot be true, however, as Odhelius 



