676 Brady and Norman — Monograph of the Marine and Freshwater Ostraeoda 



maxillfB only represented by a single lobe, the vibratory appendage absent; 

 vermiform limb (figs. 14, 15) of usual structure ; caudal laminae (fig. 17) with few 

 ungues, rapidly increasing in length. No branchiae. 



* No antennal sinus. 



Shell round, with a largely developed conical extended 



process at the infero-posteal corner, Sarsiella. 



[Shell oval, infero-posteal corner rounded, a small pro- 

 jected point on the lower half of the anterior margin, Eurijpylus.~\ 



** Antennal sinus shallow, widely open, shell obliquely quadrate, 

 posterior margin very oblique, and infero-posteally much 

 produced, Nematohamma. 



[Genus EuRYPYLUS, G. S. Brady, 1869.] 



''Les Fonds de la Mer," vol. i., p. 141. 



[Valvulse testse dursB, calcai-ese, superficie dense f oveolata, incisura nullS, ; testa 

 a latere visa rotundata, extremitate antica infra medium rostro brevi rotundato 

 praedita, postica rotundata ; supra visa clavata, antice late rotundata, postice 

 attenuata. Animal fere ignotum, antennae superiores certe fasciculo setarura 

 perbrevium arm^tse. 



Eurypylus petrosus, G. S. Brady, I. c, p. 141, PI. xviii., figs. 1, 2. 



Testa a latere visa rotundata, altitudine maxim ^ f longitudinis circiter 

 aequante in medio sita, extremitate postica rotundata, mai'gine superiore leviter, 

 inferiore valde convexo : supra visa clavata, latitudine maxima dimidia longi- 

 tudinis parte minore versus extremitatem anticam sita, lateribus postice conver- 

 gentibus, extremitate anticS, rotundata in medio paulo mucronata, postica obtuse 

 acuminata. Superficies valvularum foveolis rudibus sculpta. Long. O'OOOS. 



A single specimen from St. Vincent, Cape Verde Islands. 



The palp of the mandible closely resembles that of Sarsiella ; the last three 

 joints are wholly devoid of setae, the penultimate very short, about one-third the 

 length of the preceding ; the ante-penultimate joint is furnished, apically below, 

 with an unguis, the penultimate with a longer unguis, the last with a still larger 

 one ; these ungues are gently curved, and in consequence of the shortness of the 

 last joints their bases are close together. The caudal laminae bear only four ungues ; 

 the distal one occupies the termination, and is of large size, and ciliated on the 

 edge, the next is about half its length ; the two upper ai-e minute, and spine-like.] 



