212 



REPORT OF NATIONAL MUSEUM, 1895. 



GAULT, Benjamin T. The Willow 

 Thrnsh {Turdus fiiscesce7i8 saUcicolus), a 

 migrant in northeastern Illinois. 

 Auk, xn. No 1, Jan., 1895, p. 85. 

 Two specimens of this Thrnsh obtained in 

 the spring of 1894 are recorded from Gleu- 

 ellyn, 111. 



GIESBRECHT, Wilhelm. Reports on 

 the dredging operations oft' the west 

 coast of Central America to the Gala- 

 pagos, to the west coast of Mexico, 

 and in the (Jnlf of California, in charge 

 of Alexander Agassiz, carried on by the 

 U. S. Fish Commission steamer Alba- 

 tross during 1891, Lieut. Commander 

 Z. L. Tanner, TI. S. N , commanding. 

 XVI. — Die Pelagischen Copepodeu. 



Sull. Mus. Comp. Zool., xxv, No. 12, Apr., 

 1895, pp. 243-263, pis. I-rv. 

 A list is given of the species taken at each 

 station, followed by a systematic list, with de- 

 scriptions of 3 new genera and 10 new species. 



GILL, Theodore. Lepidosirenids and 

 Bdellostomids. 



Am. Naturalist, xxvin, No. 331, July 13, 

 1894, pp. 581-584. 

 In opposition to Dr. Howard Ayers, it is 

 claimed that the genera Lexiidosirfn and Pro- 

 toptcrus are perfectly distinct, anJ that species 

 confounded under Bdcllostoma are not only 

 specifically but generically distinct, constitut- 

 ing the genera Heptatrcma and Polistotrema. 



The nomenclature of the family Poe- 



ciliidai or Cyprinodontidic. 



Proc. V. S. Nat. JIf its., xvii, No. 991, July 



19, 1894, pp. 115-116. 



The family name Prociliida?. is substituted 



for Cyprinodontes and the reasons therefor 



given; the synonyms of Poeciliidaj and Pce- 



ciliinaj are added. 



The difterential characters of the 



Salmonida? and Thymallidw. 



Proc. U. S. Nat. Mus., xvn. No. 9D2, July 

 19, 1894, pp. 117-122. 

 The salmoniform fishes with simple ovaries 

 are divided into the families Salmonida? and 

 Thymallida^ ; the former is subdivided into the 

 subfamilies Salmoninse, Coregoninic, and Sto- 

 nodontinix'. Diagnoses of all are given. The 

 genera are also enumerated with their syno- 

 nyms. 



On the relations and nomenclature 



of Stlzostedion or Lucioperca. 



Proc. TT. 8. Nat. Mus., xvn, No. 993, July 

 21, 1894, pp. 123-128. 

 The history of the nomenclature of the pike- 

 perches is given, and the retention of Stizoste- 

 dion, instead of iwcio^^erca, justified. A synop- 

 sis is also given of all the species. The sup- 

 posed order of differentiation of the genera of 

 Percimc is indicated by a genealogical tree. 



GILL, Theodore. On the nomenclature 

 and characteristics of the Lampreys. 



Proc. U. S. Nat. AIus., xvn. No. 989, July 

 23, 1894, pp. 107-110. 

 Ammoca'tes is suppressed as a generic name, 

 and shown to bo a stage common to all arcto 

 g.x'an lampreys. Petromyzon and Lamjietra 

 are named as the longest established genera 

 and their synonyms enumerated. The families 

 Mordaciidai and Petromyzonidaj are defined 

 and justified. 



An Australasian subfamily of fresh 



water Atheriuoid iishes. 



Am. Naturalist, xxvin. No. 332, Aug. 14, 

 1894, pp. 708-709. 

 The genus Nem.atocentris should be called b'^ 

 the prior name Mclanotcenia, iind the genus 

 Aristeus of Castelnau (not Duvernoy) is re- 

 named Rhombatractus. Both belong to a fresh- 

 water Australasian subfamily newly named 

 Melauotreniinfp, and are closelj' related. 



A new bassalian type of crabs [Re- 



troplumidre]. 



Am. Naturalist, xxvin, No. 336, Dec. 5, 

 1894, pp. 1043-1045. 

 The genus Archceoplax of Alcock and Ander- 

 son (not Stimpson) is renameA Uctropluina and 

 recognized as the typo of a peculiar family of 

 Grapsoidea^Retroplumida;. 



liangia the proi)er name of the Mac- 



troid genus Gnathodon. 



Nautilus, vni, No. 9, Jan. 1, 1895, pp. 102- 

 103. 

 The name Onathodon had been used in ich- 

 thyology earlier than conchology, and con- 

 sequently its use is precluded in the latter 

 department. Therefore the name Rangia, gen- 

 erally used by recent conchologists, should be 

 retained. 



The genus Leptophidium [renamed 



Lepophidium] . 



Am. NaturallH, xxix, No. 338, Feb., 1895, 



pp. 167-168. 



The name Lepttoplddium was used by Hal- 



lowell in I860, and consequently ippfo^'^'i'rfM'm 



of Gill (1863) should receive another name; 



Lepophidium is proposed. 



Pithecanthropus ercctns. 



Nation, LX, Feb. 7, 1895, p. 105. 

 The genus Pithecanthroiius is claimed to be 

 undistinguishable, so far as the characters 

 have been given, from Homo, and certainly no 

 characters have been adduced to justify family 

 differentiation. 



The Geoffroy Saint Hilaires and Bory 



de Saint Vincent. 



Nation, LX, Feb. 21, 1895, p. 145. 

 The proper names are Geofl'roy and Bory, not 

 Saint Hilairo or Saint Vincent, as had been 

 recently given. 



