S. I. Smith on the Crustacea of Brazil. 891 



about three times as long as the carapax ; lower flagellum very 

 slender and half as long as the upper. Thoracic legs of the 

 first pair reaching to the middle of the propodus of the exter- 

 nal maxillipeds, slender, beset with stiff hairs along the edges, 

 and the basis armed with a 'spine on the inside near the articu- 

 lation with the ischium ; second and third pairs of legs succes- 

 sively a little longer, smooth and unarmed ; legs of the fourth 

 and fifth pairs smooth and unarmed, all the segments, except 

 the coxal and basal very slender and very much prolonged, the 

 terminal segments being fully as slender as the terminal por- 

 tions of the flagella of the antennulse. 



Oonodactylus chiragra Latr. — Reefs of the Abrolhos, Cara- 

 vellas. 



Of the 32 species in the foregoing list, 21 are new to the 

 fauna of Brazil ; of these 21 species, 6 are described as new, 

 and the remaining 15 are all species previously known from the 

 West Indies or Florida. The 11 species in Prof. Hartt's collec- 

 tion which were previously known from Brazil are all, with the 

 exception of Gallinectes Dance, now known from the Caribbean 

 fauna. 



The account of Prof. Hartt's collection is followed by a list 

 of the described species of Brazilian Podophthalmia with their 

 geographical distribution. One hundred and five species are 

 enumerated but the actual number of described species is prob- 

 ably somewhat less, as several are admitted on questionable 

 authority and some others will doubtless prove to be synomyms. 

 In this list the following changes in nomenclature are intro- 

 duced : — 



Achelous /Sfe&ce:=Neptunus Sebse A. Edw. 



Eucratopsis is proposed as a new genus for the reception of 

 Eucrate crassimanus Dana, Stimpson, in Boston Journal Nat. 

 Hist., vol. vii, p. 588, having shown from an examination of 

 specimens of Eucrate crenatus that Be Haan's genus has the male 

 organs, or verges, arising from the coxae of the posterior legs and 

 therefore belongs to the Carcinoplacidce of Edwards, while in E. 

 crassimanus the verges are sternal. The genus thus constituted 

 appears to be nearest allied to Speocarcinus Stimpson (Annals 

 Lye. Nat. Hist., New York, vol. vii, p. 59), but it is quite dis- 

 tinct in the larger orbits, the approximation of the inner mar- 

 gins of the external maxillipeds, and in the much greater 

 narrowness of the posterior part of the sternum. 



Trichodactylus (?) Ounninghami=~U ca, Cunninghami Bate. 



Pachygrapsus rugulosus=LetogTSbps\\s rugulosus Edw. 



Petrolisthes ?epormws=Porcellana leporina Heller. 



Petrolisthes Brasiliensis, sp. nov=Porcellana Boscii ? Dana 

 (non Savigny). 



