294 MR. BELL, HOILE CARCINOLOGKLE ; 



in fact scarcely intelligible. It is a remarkable and interesting form, and in its orbicular 

 outline resembles two new species whicb are in my collection, from the Western Coasts of 

 America. It differs from all others of the genus in having a tooth or produced tubercle, 

 on each side, on the margin of the carapace. 



Pbrsephona orbicularis, mihi (Tab. XXXI. fig. 7). Testa orbiculari, angulo pterygo- 

 stomiano in tuberculo abrupte producto; spinis posticis sequalibus, angulum fere 

 rectum designantibus. 



Hab. ad Valparaiso. Mus. Bell. 



Carapace orbicular, the latero-anterior margin slightly waved, the regions rather 

 distinct, surface somewhat punctate, with numerous minute granules, which are more 

 thickly crowded on the lateral margin and on the posterior portion ; the front with a 

 very slight triangular notch; pterygostomian angle produced into a distinct tubercle; 

 the three posterior spines short, acute, recurved, the upper one forming with the two in- 

 ferior almost a right angle. External pedipalps with the stalk grooved longitudinally, 

 and in the female the inner grooved portion separated from the outer by a ciliated ridge. 

 Anterior legs, with the arm, wholly tuberculated, the wrist granulated ; fingers the length 

 of the arm. Abdomen (female) with the first three segments, and the base and margin 

 of the shield, tuberculated. 



The colour is dull yellowish, regularly mottled with dull and pale red. 



Length of carapace 1*5 in. 



The only specimen I am acquainted with of this species is a female, which was brought 

 from Valparaiso by Mr. Miller, Surgeon R.N., and is in my collection. 



Persephona Edwardsii, mihi (Tab. XXXI. fig. 8). Testa suborbiculari, antice sub- 

 producta, angulo pterygostomiano obsoleto ; spina postica media lateralibus mult6 

 altiore, paulb longiore. 



Hab. ad insulas Galapagos. Mus. Bell. 



Carapace nearly orbicular, somewhat produced and narrowed anteriorly, minutely 

 punctate, covered, excepting at the anterior portion, with very small distinct granules, of 

 which a distinct line borders the latero-anterior portion ; the anterior margin waved, the 

 pterygostomian angle obsolete, marked only by a slight elevation. Front broad, slightly 

 emarginate ; lateral and posterior margin much rounded, the spines placed in nearly a 

 right-angled triangle, nearly equal, recurved at the apex. Anterior legs with the arm 

 everywhere tuberculated, the wrist slightly granulated on the inner side, the hand mi- 

 nutely punctate. External pedipalps as in P. orbicularis. Abdomen (female) slightly 

 granulated at the posterior and lateral portions. 



Colour pale buff. 



Length of carapace 1*3 in. 



Of this species two specimens were brought by Mr. Cuming from the Galapagos. They 

 were dredged in coral sand at 6 fathoms. 



I have dedicated this species to my friend Professor Milne-Edwards. 



