172 JOURNAL OF ENTOMOLOGY AND ZOOLOGY 
a flagellum of three; flagellum about as long as fifth article of 
peduncle. Maxilliped has a palp of three articles. 
The thoracic segments show no sinuations-as described in 
Alloniscus cornutus. Expimeral sutures are only faintly indi- 
cated in some of the specimens on the second, third and fourth 
segments. Legs similar in structure and very much spined. 
Abdomen has six segments; first two covered laterally by 
seventh thoracic segment. Epimera of third, fourth and fifth, 
large, extended posteriorly; subtetragonal in shape. Sixth, 
triangular, rounded posteriorly. Uropoda have basal article 
broad and depressed; outer ramus twice as long as inner which 
articulates at the inner angle of the basal article and is con- 
cealed at articulation by last abdominal segment. The outer 
ramus does not appear to be carinated. ; 
These specimens evidently lie close to Alloniscus cornutus. 
Their peculiar habitat and associations should be significant. 
As the specific habitat of A. cornutus is not given it is impos- 
sible to compare them on this point. However, A. cornutus is 
described as having sinuated thoracic margins. Such is not the 
case with these specimens. The outer ramus of the uropoda 
does not appear to be carinated in this isopod as in A. cornutus. 
The flagellum of the second antenne of the latter is shorter 
than the fifth article of peduncle, several specimens of this 
variety were examined and the flagellum appears about equal, 
searcely less than fifth article. Accordingly I have made these 
specimens, provisionally, a variety of A. cornutus. 
(Continued in the next number of the Journal) 
