346 Copepoda. 



1. Pachysoma punctatum Cls. Corpus l>iunneo punctatiim, lorica scabra, 

 2^/4 — 3 nun lonsruni; fronte in rostruin conioum producta ; segmentum thoracale Y. 

 processu uncinato laterali; furca segmentis duobus ultimis abdominaliljus minimuni 

 aeque longa, setis sex pinnatis; seta magna externa basi propinqua; setarum 

 quatuor terniinalium interna tenuis, gracilis, fere long-itudine furcae, paullo bre- 

 vior quani seta lateralis interna, reliquae tres ter aut quintuplo furca longiores. 



Distrib.: Pacificum, ad insulas Philippinas. 



H a b i t. : Messina (CLArs). 



Lubbockia Cls. Corjyiis doufiahini , angustum; ocuU omnino deficlentes; 

 'pcdum thoracicorum ramus internus triarticulatus, externo longior; scgmcntum thoracic. 

 V. optimc distinctum ; pedcs postici stiliformes, setas ^ gerentes; antcnnae I. (l-arti- 

 culatac , II. 4-artiCidatac , sctis curvatis armatac, prchcnsdes; maxillipedes infcriores 

 maximi, rapaccs. iisdcni Squillae simdcs; saccus ocigerus singulus. 



1. L. squillimana Cls. Corpus valde angustum, extensum, circ. 2 mm 

 longum; frons pyramidalis, acuta; antennae I. articulis 1. 3. et 4. longis, G. 

 niinimo cum 5. lateraliter conjuncto; articulus 2, antennarum II. prehensilium 

 brevis; maxillipes inferior toto capite multe longior; setae binae pedis rudimen- 

 taris lanceohitae, marginibus serratis ; abdonien parte corporis antica brevius, 

 angustum ; furcae articuli appositi , ultimo segmento abdominis longiores , setis 

 duabus externis; setae terminales tenues graciles, mediae duae pinnatae, bis aut 

 ter furca longiore. d ignotus. 



D i s t r i b. : AtLanticum. 



H a b i t. : Messina ( Claus). 



Corycaeus Dana. Corpui crassum fcrc ci/Iindricum , ahdomine pIcrunKpic 

 hiarticidaio, valdc atfcnuato ; conspicilla (Icntcs frontcdcs) ferc iinita, maxima; ocidus 

 impar parvidus; ocidi supcriorcs remoti, corpore pigmentato stdiformi, plus minusve 

 curvato; antennac I. (l-articulatac , II. uncinatac, unco apicali S inulto longiore ; 

 pedum paris IV. ramus intcrnus uniarticidatus ; thoracis scgmcidum posfrcmum jmlcs 

 rudimentarcs gcrcns. raldf angustatum quarto ohtcctum. 



1. C. anglicus Lubb. (6\ germanus Lkt.). Corpus satis compactum, 

 l^ — ^1,1 mm longum; antennae I. breves, articulo 4. praecedentibus paullo tantum 

 majore , setis debilibus ; setae basales antennarum II. tenerrime pinnatae ; margo 

 segmenti I. abdominis in 6 indistincte bipartiti in basi niucrone munitus; ab- 

 ddnieii i. cum setis turcalil)us capiti cum thdrace aequilunguin : seta interna in 6 

 niinimum furcae apquilonga, in § multo brevior. 



Distrib. : Atlanticum europaeum. 



Habit.: Adiia : Trieste, peUig., frequens (Car). 



2. C. furcifer Cls. (C. rarius Daxa, teste Baird). Corpus angustum 

 elongatum, l^^/i^d) — 2 mm ($) longuin : abdomen cum furca stiliformi et setis 

 brcvibus fere capiti cum thorace h»ngitudine aequans; antennae I. setis longis, 

 articulus 4. praecedente duplo longior; seta basalis antennarum II. non pinnata ; 

 segmentum thoracale III. angulo laterali acute producto ; alae segmenti abdomi- 

 nalis ultimi breves, in uncinum brevem terminatae; abdomeu biarticulatum, arti- 

 culo anteriore intlato; articuli furcales Inngi angusti, in i sescuplo, in § plus 

 quam duplo abdomine longiores ; setae furcales internae d et $ breves. 



Distrib. : Oceanus Atlanticus et Paciticus. 



Habit.: ^FfSsina (Claus\ 



m 3. C. elongatus Cls. Corpus elongatunL 2 — 2^/4 mm longum; anten- 

 nac «'longatae, 1. setis ])erlongis, articulo 4. minimum duplo tertio longiore, 

 posteriorcs (II.) setis basalibus robustis non pinnatis; vertex partis corporis me- 



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