580 THE VOYAGE OF H.M.S. CHALLENGER. 



subdivided into two tribes, of which the first " Hyperina anomala, M.-Edw. (Plafi/scelidss 

 Claus)," follows Claus' arrangement of 1879, adding, however, Phorcns, M.-Edw., as a 

 fourth genus in Earn. 3. Pronoidas, Claus, whereas Claus, who omitted it in 1879, places 

 it, in 1887, in the family Lycseidfe. Tribus II. Hyperina normalia, M.-Edw., is divided 

 into three families. Earn. 1. Phronimidae, Dana, is divided into two grovips, Phrosininae 

 and Phronimina? (see Note ou Claus, 1879), with the suggestion that Tri/i>hana, Boeck, 

 should be included in the family Phronimidee, the fact escaping notice that this genus had 

 been identified by Sars with Lycsea, Dana, a genus belonging to the preceding tribe. 

 Earn. 2. Hyperidre, Dana, receives the following genera, 1. " Theinisto Guer. (Parathemisto 

 Boeck)," 2. " Ci/Uopus Dana," 3. " CydoMma Guer. {Thaunwijs Willemoes)," 4. ''Tyro 

 M.-Edw.," 5. " Hyperia, Latr. {Hi'ella Straus, mas: Lestrigonus.M.-'Edw., tern: Metoecus 

 Kroyer, Tmiria Dana)," 6. " Daira M.-Edw. (Damm'a Dana)," 7. " Mimonedes Bovallius," 

 with the concluding remark " hierher ferner : Gatt. Lanceola Say." Cystogoma should be 

 written Gystisoma, and Lestrigonus is commonly regarded as the male of Hyperia. Fam. 3. 

 Vibilidse, Dana {Hyperina Gummaroidea M.-Edw.), contains only the genus VihiJia, M.-Edw. 



Division II. Gamniarina, begins with " Tribus I. Corophiina {Marcheurs M.-Edw.)." This has 

 five families, thus arranged : — - 



Fam. 1. CheluridiB, AUm. Genus Clielura, Phil. (Nemertes, White, Limnoria, Hesse). 



Fam. 2. Dulichidse, Dana (Dyopedidffi, Sp. Bate). 1. Gen. Dulichia, Krpyer {Dyopedos, 

 Sp. Bate, Paradulichia, Boeck). 2. Gen. Lxtmatopilulus, Bruz. 3. Gen. Xenodice, Boeck. 

 4. Gen. CyrtopJdum, Dana (Platophium, Dana). 



Fam. 3. Corophiidae, Dana. Group 1 with the rami in pairs on the first and second, single ou the 

 third uropods. 1. Gen. Corophluiii, Latr. 2. Gen. Biptlioncecetes, Kr0yer. 3. Gen. Cerapus, 

 Say {Erkldhonius and Cerapiodina, M.-Edw., Pyctilus, Dana). 4. Gen. Lercotlioii, Dana 

 (? Cerapus, Say, fern.). 5. Gen. Unciola, Say {Glaiieonome, Kroyer). 6. Gen. Hela, Boeck. 

 Group 2 with pairs of rami on all the uropods. 7. Gen. Podocerits, Leach {Jassa, Leach, 

 Ischyrocerus, Kr0yer, Crafophiu/ii, Dana, Masmopus, Costa). 8. Gen. Gummaropsis, 

 Lilljeb. {Eurystkeus, Sp. Bate). 9. Gen. Aoni, Kroyer {Microdeiitopnis, Costa, Autonoe, 

 Bruz., Lembos et Loncliomerus, Sp. Bate, Lalaria, Nicol.). Belated genus Xenocheira, 

 Haswell. 10. Gen. Stimpjsonia, Sp. Bate. 11. Gen. Bryope, Sp. Bate. 12. Gen. 

 Cratippus, Sp. Bate {CoJomastix, Grube, Exunguia, Norm.) 13. Gen. Podoceropsis, Boeck 

 {Rxnia, Sp. Bate). 14. Gen. Amphitlwe, Leach {Anisopus, Templet., Pleonexes, Sp. 

 Bate). 15. Gen. Synaniphithoe, White. 16. Gen. Protomedeia, Krpyer (Leptocheirus, 

 Zadd., Ptilocheirus, Stimps.). As other genera belonging here, Gerstaecker adds, without 

 numbering, Microprotopus, Norm., Gossea, Sp. Bate, Goesia, Boeck, Xenodea, Boeck, 

 Haplodieira, Haswell, and Amphithoides, Kossm. 



Fam. 4. Icilinw, Dana. 1. Gen. Icilms, Dana. 2. Gen. Icridium, Grube {Pereionotm, Sp. 

 Bate). 3. Gen. Phlias, Guer. 



Fam. 5. Clydoninse, Dana. Genus Clydonia, Dana. 



Tribus IL, Gammarina genuina (Sauteurs, M.-Edw.) ; begins with Fam. 6. Gammaridse. (The 

 branchial vesicles in subfamilies 1-5 normally developed.) 



Subfam. 1. Lysianassina (et Stegocephalina), Dana. a. Mandibles with the cutting-edge quite or 

 almost undentate. 1. Gen. Lysianassa, M.-Edw. {Idmopus, Costa, Ambasia et Socames, 

 Boeck. 2. Gen. Eurytenes, Lilljeb. 3. Gen. Anonyx, Kr0yer {Hippomedon, Aristias, 

 Onisinius, Menigrates, Ordiomene et Trypliosa, Boeck). 4. Gen. Opis, Kr0yer [Normania, 

 Boeck). 5. Gen. CaUiso7na, Costa (Scopdodieirus, Sp. Bate). 6. G^n. Acidostoma, Lillj 

 This is followed by three genera given as related, " verwandte Gattungen," without numbers 

 or descriptions, namely, Oyphocaris, Boeck, Egidia, Costa, and Glycera, Hasw. The 

 second group, h. having mandibles with dentate cutting-edge, contains 7. Geu. Stegocephalus, 

 Krpyer {Andania, Boeck). 8. Gen. Poidopareia, Kr0yer {Priscilla et Argissa, Boeck). 



