fitiiilies on iiiariiii' Oslracods ■>2-) 



five or six were ubservcd in a Uiatinct lower row and one near the main bristle b. 'J'lie eiul claw 

 is strong, but rather short; it is about as long as the anterior side of the second endopodite joint 

 to the main bristle c. 



Maxilla (fig. 5): — 1* r o t o p n d i t e: Contrary to what is the case in all the other 

 known species of this genus, the distal endite, like the proximal one, is armed with four bristles, 

 three rather long, subequal ones and one quite short one. The dorso-proximal bristle is rather 

 short. There is one moderately long ventral bristle and two subequal dorso-distal bristles, 

 which are about as long as the dorso-proximal bristle; one of these is situated somewhat prox- 

 imally of the other. (The dorso-distal bristles were found on only one of the two specimens 

 investigated; the other was defective in this character.) The short ventero-distal bristle is 

 developed. 



Sixth limb: — This is of the same type as in A. Grimaldi; I was unable to ascertain 

 exactly the number of ventral bristles, but it is probably about the same as in the above- 

 mentioned species. 



The seventh 1 i m b is of the same type as that of A. Grimaldi. '• . ' < 



The f u r c a has eight (nine?) claws, of which the six anterior ones may be denoted as 

 main claws; they are of about the same type as is reproduced for the female of A. Grimaldi, 

 i. e. with a moderately strong bend on the anterior claws. The two anterior claws have no ventero- 

 proximal spines. The two posterior ones, the secondary claws, are annulated. The equipment 

 of all these claws is the typical one for males of this genus. 



Remarks: — The description given above is based on investigations of two specimens Mau-riai. 



from Trincomalee, Ceylon, which were kindly placed at my disposal by the Zoological 

 Museum of Copenhagen and which were termed type specimens by Professor 

 G. S. Brady. Unfortunately, however, the description is, as is seen, very incomplete; this 

 is due to the exceedingly bad condition of the specimens — mixed with dirt, breaking easily 

 and with many of their bristles broken. Still I hope that this re-description has made the 

 systematic position of this species more certain. 



The direct deviations from G. S. Brady's original description that occur are probably Differpucen fn,m i/u 

 due to the exceedingly superficial method of investigation employed by this writer. I may "'"'^""^ e^cnptwn. 

 mention here: Shell: ,,antennal notch rather wide and shallow", ,, posterior extremity .... 

 bearing two fascicles of hairs, one near the dorsal, the other near the ventral end". Mandible: 

 ,, there is no toothed process on the basal joint". F u r c a: the absence of ,, distinct pectinated 

 armature" on the claws. 



As is seen above, I have written^, oculata G. S. BRADY'(part.) as a synonym of this species. Sunoiiynni. 

 The reason for this is that there did not seem to be sufficient reasons for grouping the female 

 described by G. S. Brady 1902 a, p. 180 under this name together with the male discussed above. 



So far in the literature there is only one statement to the effect that mature males of this 

 genus have been reared from larvae in aquariums, namely G. \\. Muller's statement, 1894. 

 p. 13, about A. ohlonga {Vj. (}ri I'.K). As the male in the last larval stage is very hke the mature 

 female, there seems to be no doubt that the male larvae with which (J. ^^^ MriJ.Kl! experimented 



