REPORT ON THE AMPHIPODA. 171 



■' Mit langem glattem Kopf : Gatt. Oxycephalus ; mit kurzem dickem : Typhis (erstes Glied des 



5teu imd 6ten Fusspaares gross, schildformig, nacli vorn gerichtet)." 

 In defining the Lajmodipoda, he assigned them " 2 einfachen Aiigen," " Kiefer ohne Taster," and 



says " Hinterleib fehlt, oder Igliedrig." He briefly arranges them thus :— 

 " a. Leib flach gedruokt, mit grossen Krallenfussen, wovon das 3te und 4te Paar in wurstformigo 



Kiemenblaseu verandert sind. 

 "Gatt. Gyamus {0. ceti, Walfischlaus. Ann. des scienc. natur. sec. ser. T. 1. p. 239 seq.). 

 " b. Leib lang gestreckt, linienfSrmig ; Beine sohlank, dunn, gleiohformig ; obere Fixhler mit 



Geissel. 

 "Gatt: Gaprella, Proton, Leptoinera." 

 The PyonogonidsB follow, with Nijmplion grosdpes and Pi/rnogo7mm. halsenarum. 



1837. Rathke, Martin Heinrich, bom 1793, died 1860 (Hageii). 



Zur Morphologic, Eeisebemerkuugeu aus Tauricn. Eiga u. Leipzig, 1837. 

 5 pi. Dritte Abliaiidluug. Zur Eutwickeluugsgescliichte der Crustaceen. 



This includes references to Amphiflwe and Ganimariis (Faxon). , 



1837. Rathke, M. H. 



Beitrag zur Fauna der Krym. Memoires presentes a 1' Academic Imperiale des 

 Sciences de St Petersbourg par divers Savans. Tom. iii. 1837. pp. 371-380. 

 PL V. 



Rathke here describes and partially figures a species under the name of Orchestia littorea, which 

 Spence Bate identifies with Orchestia mediterranpa, Costa, but Rathke himself in a note 

 refers to pi. 11, fig. 7 of Savigny's Descript. de I'Egypte, as giving a capital representation 

 of his species. But this Orchestia montagui is identified by Spence Bate with Orchestia 

 littorea, Montagu. A comparison of Rathke's figure with Savigny's makes it tolerably clear 

 that Rathke did not commit an error in his Note, and since Savigny's species cannot be 

 Orchestia mediterranea and by its long sloping palm and the comparatively short final joint 

 to the shaft of the lower antennse is possibly quite distinct from Orchestia littorea, it will 

 be best to retain Orchestia montagui, Savigny, and refer Rathke's Orchestia littorea to it. 

 His Gammarus gracilis is identified by Spence Bate and Boeck with Gammarus marinns. 

 Leach. The name of his new genus Amathia being pre-occupied was altered by Bate and 

 Westwood to AmathiUa. He thus defines it: — "Thorax subcylindraceus, abdomen com- 

 pressum. Antennae quatuor infequales; superiores inferioribus paulo breviores, earum 

 quaevis ex articulis tribus atque flagello composita ; superiores cum ramo parvo accessorio 

 juxta flagelli basin. Oculi magni, reniformes. Pedes quatuordecim ; duo eorum paria 

 antica chelis monodactylis complanatioribus, sub»qualibus. Stylorum abdominalium paria 

 tria. Abdominis appendicula terminalis simjilex, erecta, lamoUiformis." 



His new species Amathia ccmnata, Bate and Westwood say, " from his description and 

 figure, agrees so closely with A. Sahinii of Leaoli, that we should certainly have considered 

 them as identical had not Ratlike (1843) stated that they were distinct." An author'.s 

 statement, however, in defence of his own species need not be taken as invariably con- 

 clusive. 



The new genus Hijah- is defined as follows: — "Corpus elongatum compre,';sum. Antenna^, 

 inferiores superioribus aliquantulum lougiores ; earum qua^libet e tribus articulis atque 



