bekannte Podophthalmen Brasiliens. 21 



Beschreibung existirte. Die Geschichte der Synonymie wird 

 dies am besten beweisen. 



Ein reiner Zufall spielte mir die „Annais and Magazine 

 of Natural History. Vol. I." (Fourth Series 1868. London) in 

 die Hand, wo ich einen Artikel von Spence Bäte, betitelt: 

 „Carcinological Gleanings No. III" (pag. 442 — 448) 

 fand. Dort heisst es: „Dr. Cunningham writes me from 



At sea, Nov. 8, 1867. 



(Between Montevideo and Magellaiu Sti'eet.) 



The mention of Tijuca [Rio de Janeiro] 



reminds me of a matter that I shall feel much obliged to you 

 if you cau give me a little Information upon, viz. how far is 

 the development of the land and freshwater decapods made 

 out? I am aware that the crayfish is stated not to undergo 

 any metamorphosis in the young State; but I have not been 

 able to ascertain, in the limited number of books which I have 

 there for consultation, whether the same thing holds good in 

 the Brachyurous Decapoda. I obtained several specimens of a 

 crab, in the province of Rio Janeiro, which frequents streams 

 and damp rocks in their vicinity; and while exploring the 

 bauks of a cascade in the neighbourhood of Tijuca, I obtained 

 a female specimeu, which, to my surprise, had between fifty 

 and sixty fully developed live young ones under the pleon, in 

 the ordinary position of the ova. These little creatures were 

 very active and several escaped on the parent being captured; 

 but I have preserved a number of them, and I send 

 you specimens in this letter, together with a careful 

 sketch of the parent. This occurence, it appears to me, 

 goes far to prove that this species either undergoes no marked 

 metamorphosis between the eg^ and the perfect animal, or eise 

 that the metamorphosis takes place while the young animal is 

 beneath the pleon of its parent. The body of the addult crab 

 is of a dull purple colour; the legs are of a considerable paler 

 tint." Hier schaltet Spence Bäte in Parenthese ein: [Appendix 

 VII, PL XXI, fig. 3]. Die auf Seite 447 befindliche Anmerkung 

 aus der Feder von Bäte lautet nun folgendermassen: „VII. 



Uca Cunninghami (PI. XXI, fig. 3) . . — I 



know this species only by Dr. Cunningham's figure 

 and place it in the genus Uca rather than in that of Gecar- 

 cinus, because there are no theeth or spines on the legs. 



