166 * GEOL. AND NAT. HIST. SURVEY OF MINNESOTA. 
l’article terminal, mesure a partir de |’extremite de Ja branchie; chez la femelle cette 
meme patte est charaterisee par l’une des soies, qui s’est transformee en un batonnet 
court et gros, cilie d’une facon particuliere. La conformation des autres pattes, dans 
les deux sexes, presente egalement des characteres speciaux, difficiles a exposer sans 
le secours du dessin on sans une longue description. La carapace est marquee de. 
. tubercules termines par des poils; les crochets dorsaux sont simples et limitent un 
large espece qui prend la configuration d’un cceur quand la coquille est etalee. Les. 
crochets terminaux du post-abdomen portent au cote interne et vers leur base une 
plaque dentee, et ils sont surmontes d’une dent unique; ils n’ont pas de peigne. La 
femelle porte deux ceufs dans son ephippium.’’ 
Daday mentions the fo] lowing species, which are added provisionally: 
Moina salina Stephanow. 
Capite supra oculum impressione insigni, fornice indistincts; testa corporis fere 
quadrangulari, margine anteriore ac inferiore setis perpaucis; antennis in mare apice 
unguibus curvatis, majusculis 5; abdomine sine processu; cauda aculeis magnis 10 
setosis armata, margine superiore tuberculis perparvis lateribusque setis minutis, in 
series transversales bositis; unguibus caudalibus sine spenarum serie pectiniformi 
margine anteriore processu dentiformi longe, usque ad medium setosis. Longit fem., 
0.75 to 0.9 mm.; altit, 0.45 to 0.5 mm. 
Moina banffyi Daday. 
Testa capitis setis tecta; testa corporis fere quadrangulari, obtuse angulata, parte 
postica supra duos processus curvatos formanti; antennis primi peris abique ciliatis, 
laminis quadrangularibus obtectis; cauda apicem versus attenuata; unguibus caudali- 
bus curvatis, setosis. Longit. fem., 0.9 to 15 mm. 
GENUS MOINADAPHNIA Herrick. 1887. 
Head strongly arched above, angled in front of the eye, somewhat 
beaked at the caudal end of the lower margin, near which are affixed 
the slender antennules. Body quadrate, as in Daphnia, but merely 
angled at the dorso-candal angle. Post-abdomen elongate, armed as 
in Moina. Brood sac occluded by strong abdominal processes. An- 
tennz with a long unjointed spine from the apex of the last joint of 
the four-jointed ramus, otherwise as in Moina. The first member of 
this genus was found by L. R. King (’52 to ’54) in New South Wales 
and named Moina macleayii. The figure and description were repeated 
by Schoedler (’77), but he does not suggest generic autonomy. 
*Moinadaphnia alabamensis Herrick. 
PLATE XXXVI, Fias. 7-10. 
Herrick ’87. 
As suggested in the original paper, this species not only affords a 
needed transition between Moina and Daphnia but also forms a link 
