122 LIVERPOOL BIOLOGICAL SOCIETY. 
CoRYCHIDA.—Cont. CYMBASOMATIDA.—Cont. 
(Thorell, G. S. Brady.) (I. C. Thompson.) 
Small median eyes and | Females have usually a 
usually two large lateral single median eye with 
eyes. two lenses on dorsal 
side of head, and a third 
median lens on ventral 
side. Males of most 
species have no eyes. 
Ovisacs usually two. No ovisacs. Ova are de- 
posited upon strong 
double genital sete. 
Bourne lays stress upon the eyes ‘“‘ the character of the 
antennee, the reduction of the mouth parts, and the habit 
of the animals.’’ But im the matter of antennze Monstrilla 
certainly more nearly resembles the Harpacticide than 
the Coryceeidee, while in the condition of the mouth parts 
it is difficult to see the similarity, and as to the habit of 
the animals and the appearance of the eyes they are 
entirely different in the two cases. 
There is but little similarity between the families Pon- 
tellidee and Coryceide, and yet Claparede was inclined to 
place Monstrilla in the former. His remarks on this point 
may be thus translated :— 
‘“‘Hispecially with the Pontelle and perhaps also with 
the Setelle as stated already by Dana, the relationship 
cannot be denied. Monstrilla 1s, so to speak, a Pontella 
provided with a proboscis and therefore degraded to the 
Cormostomata. This comparison is so natural that as 
goon as a Pontella rushed through the field of my micro- 
scope I thought I saw a Monstrilla and groped after it. I 
cannot help regarding this circumstance as a fresh support 
