GREGARIOUS CRUSTACEA FROM CEYLON. 13 
a large median tooth not on “ the last segment of the abdomen,” 
the telsonic segment, but on the preceding division of the pleon, 
as also by having all the segments of the peraeon, instead of only 
the hinder ones, tuberculate. If we could suppose Milne- 
Edwards to have been deceived in regard to these particulars? 
there remains an important difference in the uropods, which 
in C. sculpta have the two branches nearly equal and both 
pointed, whereas in our species the inner is much the larger and 
broadly rounded. The length also of the form from Malabar is 
more than double of that from Ceylon. 
Family : CORALLANIDAE. 
In their essay “ De Cirolanis iEgassimulantibus,” 1879, Schiodte 
and Meinert grouped together two new genera, Barybrotes and 
Tachcea , with Dana’s Gorallctna. In 1890 H. J. Hansen assigned 
Barybrotes to a family Barybrotidse, Taclicea along with two 
new genera, Alcirona and Lanocira, to a family Alcironidse, and 
placed Gorallana by itself in a family Coral! anidse. To the last 
genus he referred seven new species from the West Indies, and to 
these Miss Harriet Richardson in 1899 added an eighth species 
from California and in 1901 a ninth from Florida. Hansen records 
eleven species earlier than his own as with more or less probability 
belonging to the genus or at least to the family. Among these 
eleven stands Gorallana hirticauda , Dana, with which the 
fortunes of both family and genus are bound up, since the genus 
was originally founded for this species alone. Recently I have 
had an opportunity of examining specimens of Gorallana hirsuta . 
Schiodte and Meinert. As this is certainly in the most intimate 
alliance with Dana’s species,; the conviction is forced upon me 
that the nine species assigned to Gorallana by Hansen and 
Richardson must be removed to a new genus Excorallana , to 
which Hansen’s definition of Gorallana applies, and that the six 
species of Gorallana described by Schiodte and Meinert will 
properly remain in that genus, which, with Alcirona , Lanocira , 
and Tachcea , will form the family Corallanidse. To this Hansen’s 
definition of the Alcironidse will apply, with the slight modifica¬ 
tion that the palp of the maxillipeds must be described not as 
four-jointed, but as four- or five-jointed. 
Genus : GORALLANA, Dana* 
1853. Gorallana , Dana, U. S. Expl. Exp., vol. XIII., pp. 748, 
773. 
1879. Gorallana , Schiodte and Meinert, Naturhist. Tidsskr., 
ser. 3, vol. XII., p. *286. 
