KONGL. SV. VET. AKAUEMIKNK HANDLINGAU. BAND. 22. N:() 7. 887 



1877, Anchylonyx, TH. STREETS. — »Contributioiis (o tlic Niitural Uistory 



of the Hawuiian and Faniiiiif^ Islanda 

 aud Lower Galifornia». Bulletin of 

 the United States National Muscnin. 

 1877. N:o 7, p. 1.30. 



Tlie typc for the genus Phroniniella av;is described in 1862 by Clau.s under the 

 name Pltronima elongata. As far as I know he did not give nny other generie diagnosis of 

 Phronirnella than the few words aeconipanying that nanie in the seeond edition of his 

 »Grundziige der Zoologie», till in 1879, when he published his excelleiit niemoir, »Der 

 Organisnius der Phronimiden». 



His diagnosis of 1872, repeated in 1875, runs: 



wDas fimfte Beinpaar endet mit lan^gestreckter Greifhand. Drittes Beinpaar sehr läng. 

 Niir zwei Paare stilförmiger CaudaJgriffel. Vorderfiililer des Männchens mit starkem Schaft und 

 vielgliedriger Geissel.» 



In 1877 Th. Streets described a Phronirnella inider the name oi' Anch^lonyx ha- 

 matus, n. g. et sp., which in 1882 he identitied with Phronirnella elongata, Claus. 

 His generic description runs thus: 



»Head moderately large, broad and rounded at the top, tapering inferiorly to the oral 

 apparatus, and excavated in front. Eyes on the lateral and dorsal surfaces of the head. Both 

 pairs of antennte present, long; base of the superior pair long and stout, three-jointed; inferior 

 pair slender, four-jointed; flagellum very attenuated and elongated. Thorax broad, somewhat 

 compressed; segments six. Abdomen narrow. The gnathopoda not subchelate, nor much reduced 

 in size, when compared with the following feet; the first and seeond pairs of thoracic feet long, 

 slender; carpus and meros linear. The third pair enlarged; carpus and meros dilated, with the 

 anterior margin armed with teeth; propodus flexes on the carpus, impinging against the teeth 

 ou its anterior margin; dactylus fused with the propodus. The fourth and fifth pairs of feet sub- 

 equal, shorter than the preceding. The three posterior pairs of abdominal appendages biramous, 

 lanceolate; rami pointed.» 



In 1879 Claus gave the following generic diagnosis: 



»Körper sehr gestreckt, uberaus pellucid, mit nur 2 Paar stilförmiger Uropoden. Kopf 

 kurz, mit höhem, gewölbtem Scheitel, Scheitelmundachse sehr verlängert. Die zwei vordern 

 Brustsegmente ohne Grenzen verschmolzen. Mandibeltaster fehlen auch dem Männchen. Zunge 

 der Unterlippe (Maxillarfusspaar) auf einen warzenförmigen Höcker reducirt. Die beiden Gnatho- 

 podenpaare schmächtig mit schwacher (zusammengesetzter) Greifhand. Das dritte Beinpaar etwas 

 weniger, das vierte stark verlängert. Das fiinfte Beinpaar endet mit sehr langgestreckter (zu- 

 sammengesetzter) Greifhand. Drei Paare von Kiemenschläuchen am 4., 5. und 6. Brustringe.» 



In 1882 Streets gave the following new diagnosis: 



»The shape of the head and antenns, and the general form of the thorax and abdomen 

 very similar to Plironima. The third pair of thoracic feet long — much longer than the succeed- 

 ing pair. The fifth pair enlarged, and used for prehension; the extremit^i, vr daw, resetnbling that 

 of the Squilla — the movable finger (fifth joint) flexing against the anterior aspect of the palm, 

 which is furnished with teeth. Three pairs of styliform caudal appendages; the seeond, or middle, 

 pair short, or rudimentaiy. 



Sexual diferenoes. Males smaller than the females, and more robust. In the feraales the 

 seeond pair of caudal appendages are rudimentary, almost obsolete; in the males well developed.» 



