180 



CARL BOVALLIUS, AMPHIPODA HYPERIIDEA. I. 2, 



HYPERIIDÄ. 



5. HTPERIA OÅLBA, xMONTAGU, 1813. 



Pl. X, fig. 25—32. 



Cancer Gammarus Galba, Montagu. 



Facsimile from Montagu. Träns. Linn. Soc. Vol. 11. 

 pl. 2, fig. 2. 



Hyperia galba, Montagu. 



Facsitnile from Sp. Bate and Westwood, Brit. Sessile-eyed Cru8t., 

 Vol. 2, p. 2. 



DiagD. Caput curtum, latiim, segmentis duobus primis persei brevius. Segmenta omnia jsercEilibera. 

 Carpus pedum j^erwi primi paris dilatatus, productus, margine posteriore semel inciso, spi- 

 nisque instructo. Carpus pedum secundi paris productus, margo anterior processus carpalis 

 dimidio marginis posterioris metacarpi longior. Metacarpus pedum primi et secundi parium 

 spinis parce instructus, margine posteriore serrato, dentibus tri-cuspidatis; dactylus longus. 

 Pedes tertii ac quarti parium pedibus parium duorum prsecedentium multo longiores, spinis 

 destituti; metacarpus serratus. Pedes parium trium ultimorum duobus prascedentibus 

 paullulo longiores, feniore latiore; carpus pedum quinti paris tibia non longior, nec serratus. 

 Latera segmentorum plei post angulata. Pedunculus pedum uri ultimi paris plus quam 

 duplo longior quam latior. Telson longius quam latius, segmento ultimo uri brevius; pe- 

 dunculo pedum uri ultimi paris latius, sed dimidio pedunculi ejusdem brevius. 



The head is short and broad, shorter than the first two perseonal segments together. All 

 the peraonal segments are free. The carpus of the first pair of perwopoda is dilated and 

 produced, the hind margin showing one single notch, and being provided with bi-istles. The 

 carpus of the secoud pair is produced; the front margin of the carpal process is more 

 than half as long as the hind margin of the metacarpus. The metacarpus of the first and 

 second pairs is sparingly set with bristles; the hind margin is serrated, the teeth being 

 three-pointed; the dactylus is long. The third and fourth pairs are much longer than the 

 first two pairs, without bristles, but with the metacarpus serrated. The last three pairs are 

 ^ little longer than the two preceding pairs, and have the femur broader; the carpus of 



