KONGL. SV. VET. AKADKMIENS HANDLINGAR. BAND. 22. N:0 7. 



175 



The ovitectrices are elongate-triangular, truncated below, and as long as the bran- 

 chial sacks. 



The first and second pairs of pereeopoda are like those pairs in the male but the 

 femur is comparatively broader. 



The third and four following pahs are similar to those in the male but the four 

 last joints of the sixth and seventh pairs are somewhat thicker and stouter. 



The pleon is scarcely as long as the last four perasonal segments together. 



The urus; the first segment is scarcely longer than the last coalesced one. 



The uropoda; the peduncles are a trifle shorter than those in the male. 



The telson is comparatively longer than that in the male, being nearly as long 

 as broad. 



4. HYPERIA GAUDICHAUMI, H. MILNE EDWARDS, 1830. 



PL X, fig. 18—24. 



Hyperia Gaudichaudii, H. Milne Edwards. 

 Facsimile from Sp. Hate, Catal. Amph. Crust. Brit. Museum, pi. 48, fig. 3. 



Diagn. Caput curtum, latum, segmenta duo priora peraji longitudine requans. Segments omnia pefcei 

 libera. Carpus pedum percei primi paris dilatatus, paullulo productus; margo posterior 

 bis incisus, spinisque instructus. Carpus pedum secundi paris productus; margo anterior pro- 

 cessus carpalis dimidio marginis posterioris metacarpi brevior. Metacarpus primi et secundi 

 parium spinis parce instructus; margo posterior serratus, dentibus simplicibus; dactylus 

 longus. Pedes tertii ac quarti parium pedibus parium duorum prajcedentium paullo longi- 

 ores, spinis nonnullis brevibus instructi. Pedes parium trium ultimorum duobus pnuceden- 

 tibus non longiores; carpus pedum quinti paris tibia paullo longior, non serratus. Latera 

 segmentorum plei duorum ultimorum post augulata. Pedunculus pedum mi ultimi paris 

 latus. Telson longius quam latius, segmento ultimo uri brevius, pedunculum pedum uri 

 ultimi paris latitudine ajquans, ac dimidio pedunculi ejusdem brevius. 



The head is short and broad, as long as the first two peraeonal segments together. All the 

 pergonal segments are free. The carpus of the first pair of peraiopoda is dilated, very little 

 produced; the hind margin is twice notched, and provided with bristles; the carpus of 



