204 REPORT ON ZOOLOGY, MDCCCXLIIJ. 



Miinchen, 1843. (Development of the Ovum of the Lob- 

 ster, from the first changes in the Vitellus, up to the 

 maturity of the Embryo. Munich, &c.) 



Besides the exposition of the gradual formation of the embryo, the author, 

 in conclusion, also gives a summary view of the varieties which occur in this 

 respect in Carcinas m&nas and in the River Crayfish, which were also subjected 

 to observation. In Carcinas mcenas the eyes are considerably larger, the 

 Liver is completed at an earlier period, but the feet and oral members at a 

 later. In the River Crayfish the eyes are smaller than in the Lobster, although 

 the ovum is larger ; on the other hand, the antennae are developed to a 

 greater length at an early period, and the caudal feet are already observable 

 in the early stages. In the Lobster the tail is developed earlier than in the 

 River Crayfish. 



BRACHYTJRA. The following species, in the various families of the bra- 

 chyurous Crabs, have been instituted as new by Krauss (1. c.) : Plutyonychus 

 rugulosus, JEgle (De Haan) Riipellii ; Xantho De Haunii, 5-dentat-us ; Galene 

 (Dc Haan) natalensis ; Pilumnus xanthoides ; Menippe Martensii Telpliusa 

 depressa; Sesarma longipes ; Acanthonyx Mac Leayi, ^-dentatus; Pisafascicu- 

 laris. 



Besides these, two new species have been described by "White : Portttnus 

 catharus, resembling the European P. marmoreus, though broader, and with 

 four teeth on the frontal margin, from New Zealand (Dieffen. Trav. ii, p. 265), 

 and Atelecyclus spinulosus, from the Falkland Islands, nearly allied to the 

 Chilian A. chilensis, Edw. (Ann. Nat. Hist, xii, p. 315.) 



On a peculiar structure of the branchiae in the Laud Crabs some remarks 

 were made by J. Muller in the Society of Naturalists at Berlin. The 

 branchiae have, in these, stiff processes between the lamellae, which 

 prevent their sticking together, and the want only of which appears to be 

 fatal to fish out of water. (Froriep's N. Notiz, 28 Bd. p. 265.) 



ANOMURA. Pagurus virescens, and also Porcellana natalensis and De 

 Haanii are new species by Krauss (1. c.), from the coast of Natal ; both the 

 latter inhabit the Madrepore banks. 



ASTACINI. Krauss (1. c.) caught abundantly, in Table Bay, a Gelia, 

 which, from the figure in the ' Fauna Japonica,' he determines to be G. major, 

 De Haan, but on account of some differences he describes it as var. capensis. 

 More accurate comparison will probably show it to be a distinct species. 



CARIDES. A number of new species from the coasts of Norway have 

 been instituted and accurately described by Rathke (Verhaudl. d. Kais. 

 Leop. Acad. d. Wiss. xii, p. 6-18) : Palcemon Fabricii, Hippolyte snbula, 

 mttata (pusiola, Krog), recitn-irostris, Loreiiii (mutila, Kr.), lentiginosa 

 (Gaimardii, Kr.), Rctzii, Pandalus bremrostris. Additional remarks are 

 given in these Archives, 18 ii, i, p. 258-9. 



