412 SNODGRASS AND HELLER 



orbital band and the contrast of the darker color before it with the 

 paler color behind it are characteristic marks. The only difference is 

 in the maculation. The Hawaiian specimens all have white spots 

 instead of black ones. In some, these spots are confined to the back 

 of the carapace as are the black ones in the Clipperton specimen, the 

 sides being plain. Others are spotted above and on the sides. In 2 

 the spots on the side are ocelli, having (in alcohol) a white center and 

 a wide black marginal ring. One has the spots of the upper parts 

 of the sides black like those on the back of the Clipperton specimen. 

 The latter may, of course, prove to be simply a color variation of O. 

 camurum. 



Family TETRAODONTID^. 



146. SPHEROIDES ANGUSTICEPS (Jenyns). 



Tetrodon angusticeps JENYNS, Voyage Beagle, Fishes, 154, pi. 28, 1842, Gala- 

 pagos Islands. 



Spheroides angusticeps, JORDAN & BOLLMAN, Proc. U. S. Nat. Mus., xn, 1889 

 (1890), 183 (Chatham Island; Charles Island; Panama). JORDAN & 

 EVERMANN, Fishes North and Mid. Amer., n, 1731, 1898. 



Range. Pacific coast of tropical America, Galapagos Islands. 

 We did not meet with this species, but it was obtained by Darwin 

 and by the Albatross at the Galapagos Archipelago. 



147. SPHEROIDES LOBATUS (Steindachner). 



Canthigaster lobatus STEINDACHNER, Ichthyol. Notizen, x, 18, pi. 5, fig. 3, 



1870, Altata. 

 Spheroides lobatus, JORDAN & EVERMANN, Fishes North and Mid. Amer., n, 



1731, 1898. 



Range. Pacific coast of tropical America, from the Gulf of Cali- 

 fornia to Panama ; Galapagos Islands. 



There is one small specimen of this species in the Stanford Univer- 

 sity collection from the Galapagos Archipelago collected by the 

 Albatross, but the only Spheroides that we obtained is S. annulatus. 



148. SPHEROIDES ANNULATUS (Jenyns). 



Tetrodon annulatus JENYNS, Zool. Beagle, 153, 1842, Chatham Island. 



Spheroides annulatus, JORDAN & BOLLMAN, Proc. U. S. Nat. Mus. 1889, 183 

 (Indefatigable, Albemarle and Chatham islands). JORDAN & EVER- 

 MANN, Fishes North and Mid. Amer., n, 1735, 1898. 



Range. Pacific coast of tropical America and the Galapagos 

 Islands. 



We have 17 specimens from Tagus Cove and Turtle Point, Albe- 

 marle, Hood, Seymour and Chatham islands. 



