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



175 



The ovitectrices are elongate-tviangular, truncated below, and as loiio- as the bran- 

 cliial säcks. 



The frst and fteeond 'pairs of perceopoda. are like those pairs in the inale but the 

 fe in ur is comparatively broader. 



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

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



The ^:»Zeon is scarcely as long as the last four pera^onal 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 comparativeh' longer than that in the male, being nearly as long 

 as broad. 



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



Pl. X, fiff. 18—24. 



Hyperia Gaudichaudii, H. Milne Edwards. 

 Facsiiiiile from Sp. Bate, Catal. Ampli. Crust. Brit. Museum, pl. 48, iig. 3. 



Diagn. Caput curtum, latum, segmenta duo priora perasi longitudine aäquans. Segmenta omnia |?«'ö?i 

 libera. Carpus pedum peraii prinii paris dilatatus, paullulo prodiictus; margo posterior 

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

 cessus carpalis diinidio 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 duorura prtecedentium paullo longi- 

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

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

 segmentorum plei duorum ultimorum post angulata. Pedunculus pedum vri ultimi paris 

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

 ultimi paris latitudine fequans, ac dimidio pedunculi ejusdem brevius. 



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

 perceonal segments are free. The carpus of the first pair of perceopoda is dilated, very little 

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



