16 



* 



inni 3 tydelige Længdekjøler, hvoraf tien midterste gaar 

 ml i •'! særdeles store og temmelig ens udviklede, sammen- 

 trykte, fortilbøiéde Fortsatser, Sidekjølerne i 2 lignende. 

 De forreste Sidefortsatser overordentlig store, triangulært 

 tilspidsede og skjævt udadrettede. Pandehornet temmelig 

 stort, ved Basis bredt, men derpaa sammentrykt, næsten 

 øxeformigt udvidet nedad og med Enden uddraget i en lang 

 og skarp, skjævt opadrettet Spids. Bagkropssegmenterne 

 Langs ad Midten kjølede; de 2 forreste oventil med en hoi 

 sammentrykt Fortsats; sidste Segment med 2 parallele Kjoler. 

 Epimererne med tandformige Fremspring i Kanterne. Det 

 midterste Halevedhæng oventil udhulet efter Længden, med 

 3 Sidetænder, Enden triangulært tilspidset. Farven brun- 

 rød med mørkere Shatteringer. Længden indtil 130 mm . 



Findesteder. Stat. 31. 224. 338. 359, 362, 363. 



Bemærkninger. Nærværende anselige Crangonide er 

 allerede i Aaret 1815 beskrevet af Tilesius efter Exemplarer 

 fra Kamtschatka, men af ham kun anseet for en Varietet 

 af den af Phipps forst omtalte Astacus (Crangon) boreas. 

 24 Aar deretter blev samme Form atter undersøgt af Owen 

 og beskrevet i "Zool. of Beechey's Voyage" som en ny 

 Art under Benævnelsen < 'rangon salébrosus. Senere har 

 denne Form, saa vidt mig bekjendt, ikke været noiere om- 

 talt, 1 



Arten slutter sig saavel i sin ydre Habitus som i den 

 anatomiske Bygning meget nær til Sclerocrangon boreas 

 (Phipps). men viser dog tilstrækkelige Afvigelser til at dens 

 Artsforskjel raaa sættes udenfor al Tvivl. Af disse Afvi- 

 gelser kan fremhæves: Pandehornets meget eiendommelige 

 Form, den stærke Udvikling af saavel Kjolene som de torn- 

 formige Fremspring paa Legemet, endelig den characteri- 

 stiske Bevæbning af Bagkropssegmenternes Epimerer. 



I min Prodromus har jeg for denne Art benyttet det 

 af Kinahan foreslaaede Slægtsnavn Cheraphilus. Dette an- 

 ser jeg nu for mindre rigtigt. Vistnok henforer Kinahan 

 ogsaa Crangon boreas til denne Slægt; men da han selv 

 ikke synes at have undersøgt hin Art. vil det vistnok være 

 mere correct at indskrænke Slægten Cheraphilus, om denne 

 godkjendes, til de af nævnte Forsker selv noiere beskrevne 

 Arter, eller en begrændset Del af disse. 



Beskrivelse. Legemet er (se Pl. 2; Fig. 1 og 2) af 

 plump og undersætsig Form. med Høide- og Bredediame- 

 teren omtrent ens. 



Integunienterne er haarde og stærkt incrusterede samt 



arcuate, with 3 distinct longitudinal carinæ. of which the 

 median carina rises into 3 apopbyses, exceedingly large, 

 compressed. comparatively uniform in development, and bent 

 anteriorly, the lateral carinæ dividing each into 2 similar 

 processes. Antero-lateral spines remarkablv large, triangular- 

 acute. and turning obliquely outward. Rostrum compara- 

 tively large, broad at the base. hut from thence compressed. 

 — dovnvard almost securiform-dilated, with the extivmity 

 produced into a long and acute point turning obliquely 

 upward. Abdominal segments carinated along the middje; 

 the two anterior, above. with a high. compressed process ; 

 last segment with 2 parallel carinæ. Epimera with denti- 

 form projections on the margins. Telson hollowed out 

 above longitudinally, with 3 lateral teeth. extremity triang- 

 ular-acute. Colour brownish-red . with darker shadings. 

 Length reaching 130""". 



Locality. - Stats. 31. 224. 338, 359. 302, 363. 



Remarks. — This large Crangonidsan was described 

 as early as the year 1815. by Tilesius, from specimens 

 collected 'at Kamtschatka. hut regarded by that a uthor 

 merely as a variety of the form Astacus (Crangon) bomt*. 

 first recorded by Phipps. Four and twenty years later, 

 this animal was again examined. by Owen, and described, 

 in ''Zool. of Beechey's Voyage," as a new species. under the 

 name of Crangon salébrosus. Suhsequently. to the best of 

 my knowledge, a more detailed description has not been 

 given of the form. ' 



The species approximates very closely botb in its 

 habitus and anatomical structure Sclerocrangon boreas (Phipps i. 

 but exhibits however sufficient characteristic divei-gencies to 

 place beyond doubt its specific distinctness. Of these divef- 

 gencies niay he mentioned: — The very peculiar form of 

 the rostrum. the remarkable development alike of the carinæ 

 and of the spiniform projections on the body. and tinally 

 the characteristic arma ture of the epimera of the abdominal 

 segments. 



In my Prodromus I have adopted for the present 

 species the generic name Cheraphilus, suggested by Kinahan. 

 This appellation I do not now, however. regard as strictly 

 correct. True. Kinahan also reiers Crangon boreas to the 

 same genus; hut apparently not having himself examined the 

 species, it vill, I opine, be safest to comprise in Cheraphilus, 

 provided that genus be accepted. such species only as the 

 aforesaid naturalist has described more in detail, or a 

 limited number thereof. 



Description. — The body (see Pl II. figs. 1. 2) 

 clumsv and thickset in form. height and breadth about 

 equal. 



The integuments are hard and thickly incrusted. and 



1 Da ovennævnte Skrift afOwen mangler i vort Univ. Bibliothek, 

 vidste [ dengang jeg skrev min Prodromus, at nærværende 



Form allerede tidligere var beskrevet, og opførte den derfor som en 

 n\ Art. Jeg hai- imidlertid senere overbevist mig em. at dm i Yirke- 



eden er identisk i 1 Owens Art. hvorfor den selvfølgeligt maa 



beholde det ældre at' denne Forsker anvendte Artsnavn. 



1 Since Owen's above-cited Memoir is not te be had in the 

 Library of the Christiania University, I was not aware, when writing 

 my Prodromus, that the fonn in question had previously been de- 

 scribed, for which reason I spoke "f it as a new species. I have sub- 

 sequently. however. been convinced that the animal is identical with 

 Owen's species. am 1 , must therefore et' course retain the original specific 

 appellation assigned to it by that naturalist. 



