KONGL. SV. VET. AKADEMIENS HANDLINGAR. BANJ). 22. N:(i 7. 411 



In 1885 Carus gave the tbllowing diagnosis: 



»Antenna' longa;; mandibulas palpo triarticiilato; segiiientiuii I. tlioracalc iiim sccimdo 

 coalitum; par pedura V. manu prehensili chelifornii, articulo basali huiiinail iim|il(]: jjar VJI. 

 gracile exungue; stili caudales laniellosi.» 



In 1886 Gerstaecker characterized the genus with following words: 



»Kopf äusserst plump, o%'al abgerundet, weiter nach unten als der Mittelleib herabreicliend. 

 Au dieseni die beiden vordersten Segmente stark verkiirzt öder selbst verschmolzen, dag fimfte 

 aiu längsteti, die beiden letzten iiai-li unteo mid liinten aiisgezogen. Die beiden vorderen Beiu- 

 paare verkiirzt, mit scharfer Endklaue, das dritte und vierte verlängert, luit erweitertem und 

 fingerförmig ausgezogenem drittletzten Gliede, das fimfte mit grossem, sehiJdförmigem Schenkel- 

 gliede (unter •\velchem das sechste Paar theilweise versteckt liegt) und sehr breiter, am lunen- 

 rande gezälinter Greifhand, gegeu welche sieh die zweigliedrige Endklaue in der Eichtung nach 

 vorn liin einschlägt. Auch das sechste uud siebente Paar mit schildförmigem Schenkelgliede, 

 aber ohne Greifhand. Am Hinterleib die vier Endsegmente stark verkiirzt, zusammen kaum 

 länger als jedes der drei grossen Basalsegmente.» 



The lirst instituted species of the genus were Anchylomera Blossevillei and A. 

 Hunteri, proposed in 1830 by H. Milne Edwards. 



The next was Hieraconyx ahhreviatus n. sp., described in 18.36 by Guérin Méneville; 

 it is a synonym for Anchylomera Blossevillei. 



In 1850 DE Natale described Cheiroprestis messanensis, which also is synonymous 

 with A. Blossevillei. 



In 1852 Dana proposed the two new species Anchylomera jjurpurea and A. thyro- 

 poda, the former of which is the male, and the lättar the female of A. Blossevillei. 



In 1862 Spence Bate instituted the new species A. antipodes, describing and de- 

 lineating the male and female form. Even this speciiic name is, in my opinion, a syno- 

 nym for A. Blossevillei. 



Thus \ve have to record only two species, viz. A. Blossevillei and A= Hunteri, 

 the latter of which is somewhat dubions, and not actually examined since it was described 

 by H. Milne Edwards. 



The sexual dimorphismus is shown only in the form of the first pair of antennas 

 and in the female wanting the second pair of antennie and the mandibular palp. 



The two species are distinguished as shown in this tal)le: 



A. The head is large and much deeper than the perjeon. The first pair of per<EO- 



poda are much shorter than the second. The foremost tooth on the under 

 margin of the carpus, or the carpal process, in the fifth pair does not reach 

 deeper than the following teeth; the dactylus of the same pair is long I. A. Blosserillei. 



B. The hfiad is comparatively small and not deeper than the perajon. The first 



pair of perteopoda are almost as loug as the second. The foremost tooth on 

 the under margin of the carpus, or the carpal process, in the fifth pair reaches 

 much deeper than the following teeth. The dactylus of the same pair is 

 very short 3. A. Muuteri. 



