312 "ENDEAVOUR" SCIENTIFIC RESULTS. 



rightful status of several of Haswell's species, which, for 

 some time, have been considered of doubtful value, 

 owing to the insufficiency of their original descriptions. 

 It is also interesting to note that the true Trachypeneus 

 anchoralis has been found for the first time since it was 

 taken originally by the "Challenger" and described by 

 Spence Bate. 



An attempt at a complete key to the Australian and 

 Indo-Pacific species of the genus Peneus has been intro- 

 duced in connection with the systematic discussion of 

 the "Endeavour" representatives of that group. 



The principal synonymical references have been cited 

 under each species dealt with in this paper and in 

 addition to the local occurrence the general distribution 

 is given. Re-descriptions of a few species have been 

 deemed necessary, and in nearly all cases measurements 

 and remarks considered pertinent have been added. The 

 sections of the text dealing particularly with Haswell's 

 specimens examined in connection with this report are 

 subheaded by the names under which the species were 

 described by Haswell. These are: Penceus mastersii 

 [== Penceopsis ntonoceros] (p. 325) ; J'cmnifs [= = Penceop- 

 .x/.v] iiHirlrayi (p. 333) ; Penceus [= Peuceopsis] iionr- 

 guiiH'fr (p. 338); and Penceus pultiinixiK [= Pcnceopsis 

 novce-gn in <'(r] (p. 338). Haswell's I'l-mru* t/ronulosus is 

 granulosus (p. 351). 



My best thanks are due to Dr. Mary J. Rathbun for 

 most helpful guidance in the preparation of this paper, 

 and to the late Allan R. Mc(""ulloch for his kindness in 

 furnishing me with notes upon Haswell's types. Also to 

 the authorities of the Australian Museum and the United 

 States National Museum, the former for the opportunity 

 of studying the collection upon which this report is based, 

 and the latter for the extensive use of its laboratory 

 and research facilities. 



The photographs were taken by Mr. Clarence R. 

 Shoemaker, of the United States National Museum. 1 



1 Certain specimens in the Australian Museum collection which 

 were not seen by Dr. Schmitt exhibit various features which have 

 enabled Mr. F. A. McNeill to supplement in some small degree a few 

 of the author's observations. These are recorded in their proper 

 places as brief footnotes under Dr. Schmitt's observations upon the 

 several species concerned. EDITOR. 



