42 U.S. NATIONAL MUSEUM BULLETIN 239 



arata, Neptunia Plate 16, fig. 8 



1860, PBSNH, vol. 7, p. 326 (hab. ?), axis 23, diam. 10 mm.; 1862, 

 Otia Conch., p. 123. Measured holotype USNM 36723. NPEE. 



aratus, Saxidomus: 1861, PBSNH, vol. 8, p. 30 (San Francisco 

 [California]), long. 4.5, alt. 3, lat. 2 in.; 1862, Otia Conch., p. 168. 

 NPEE. 



arctata, Ringicula Plate 15, fig. 9 



1860, PBSNH, vol. 7, p. 325 (Hong Kong Harbor [China], W. 

 Stimpson), axis 4, diam. 3 mm. ; 1862, Otia Conch, p. 122. Probable 

 measured holotype, here selected, lectotype USNM 567, figured 

 by Yen, 1944, Proc. California Acad. Sci., ser. 4, vol. 23, p. 578, 

 pi. 51, figs. 30, 31; 2 paratypes USNM 612334. NPEE. 



arctipinnis, Sepioteuthis: 1852, USEE, vol. 12, p. 479, pi. 49, 

 fig. 593, a-c (Maui, Sandwich [Hawaiian] Islands), length of body 

 6, head 2, superior arms 2){, inferior lateral arms 3, tentacular arms 

 8, cup-bearing portions 2%, greatest breadth 2% in.; 1862, Otia 

 Conch., p. 233. 



arcuata, Modiolaria Plate 21, fig. 6 



1861, PBSNH, vol. 8, p. 38 (Kagos[h]ima [Japan], W. Stimpson), 

 long. 5, alt. 2 mm.; 1862 Otia Conch., p. 176. Half measured 

 holotype USNM 24065, original no. 1419 b. NPEE. 



areolatus, Mytilus {Modiolaria) [Modiola]: 1850, PBSNH, vol. 3, 

 p. 343 (New Zealand), long. 2, alt. 1%, lat. 1 in.; 1852, USEE, 

 vol. 12, p. 452, pi. 41, fig. 562,a; 1860, Otia Conch., p. 93. Syntype 

 MCZ 154351, ex Smithsonian Inst, (printed label); syntype MCZ 

 87420 ex BSNH 8308. 



argentata, Margarita Plate 5, fig. 6 



1841, Invert. Massachusetts, p. 256, fig. 164 (in fishes caught off 

 Cape Ann and Cohasset [Massachusetts]), length Xo, breadth 

 % in. Mentioned as being in BSNH 2412, now lost, and in Mas- 

 sachusetts State Cabinet 35; 1862, Otia Conch., p. 182; 1870, 

 Invert. Massachusetts, p. 282, fig. 549. Lectotype, here selected, 

 MCZ 178560 and paratype MCZ 225218, both ex Massachusetts 

 State Coll.; paratypes, original no. A 6123, listed as lost in 1875, 

 27th Ann. Rep. NYSM, p. 13. 



argentata, Philine: 1859, PBSNH, vol. 7, p. 139 (Hakodadi [Hako- 

 date] Bay [Japan], in sandy mud, 2-6 fathoms, W. Stimpson), 

 axis 6, diam. 5 mm.; 1862, Otia Conch., p. 111. Probable holotype 

 USNM 1680, badly crushed. NPEE. 



argillacea, Perna: 1850, PBSNH, vol. 3, p. 311 (hab. ?), long. 2%, 

 alt. 3, lat. % in.; 1852, USEE, vol. 12, p. 444, pi. 40, fig. 559,a-b, 



1862, Otia Conch., p. 91. Figured holotype USNM 5944; 2 para- 

 types MCZ 216811 ex Smithsonian Inst, (printed label). 



