Descrijftions of Neio Species of Achatinella and Pujpa. 145 



Heliopacilica casiaBaeocawda. 



Male. Front, crown, chin and a continnous line running 

 below and beyond the 63^6, black ; a white line extends back- 

 ward from behind the eye, and borders on the black ; the 

 upper plumage is grass-green; tail dark chesnut-red, as are 

 also tlie shafts, the lateral feathers are somewhat lighter in 

 color, the two central featiiers have a margin of golden bronze 

 extending entirely around them, the other tail feathers have a 

 narrow edging of dull black encircling their ends ; wings 

 purplish-brown ; throat brilliant grass-green ; sides and under 

 wing-coverts grass-green ; abdomen and under tail-coverts dull 

 rufous ; tarsi clothed with pale rnfons feathers ; bill flesh-color 

 for three quarters its length, with the end black ; feet blackish- 

 brown. 



Length 3^ inches ; alar extent 4f ; wing 2 ; tail W ; bill \\. 



Hahitat. — Cape St. Lucas, South California. 



Remar'k.s. — This species is a near ally of H. onelanotis 

 Sw., but differs in the head being black instead of sapphire- 

 blue, in the green-plumage being of a much darker shade, 

 the abdomen rufous in place of grey, and in the dark chesnut 

 color of the tail, which is mostly black in melanotis. 



The specimen belongs to the Museum of the Smithsonian 

 Institution, and was but lately received from Mr. John Xantus. 



XIX. — Descriptions of ISTew Species of the Genera 

 Achatinella, and Pupa. 



By W. Newcomb, M.D., of Oakland, Cal., Corresjionding Member. 

 « Eead April 9th, 1860. 



Acliatinella Kaoaieii§is, nov. sp. 



T. imperforata, dextrorsa, trochiformi, solida, valide striata et decus- 

 sata, saperne nigro-fusca, carina et basi albo-hitea ; siitura crenulata ; 



