136 
Psyche 
[December 
constricted intersegmentally, so as to give a lobed appear- 
ance. Abdominal segments almost cylindrical, only slightly 
compressed dorso-ventrally. Fourth antennal segment with 
a large apical, distinctly trilobed, retractile bulb, situated 
in a shallow pit, and nine large, blunt “olfactory” hairs. 
These hairs are arranged in two groups: one group of 
six hairs along the dorso-external side, and a second group 
of three along the dorso-internal area. 
Third antennal segment almost completely fused with 
fourth. Sense organ of third segment consists of two 
small cylindrical pegs situated side by side in a shallow 
integumentary fold. Integument granulate, with the gran- 
ules being large and fairly uniform in size. Antennal 
segments one through three decreasing in diameter, one 
being the widest. Segments three and four subequal in 
diameter. Head viewed from above somewhat heart-shaped. 
Buccal cone short and blunt. P.A.O. consisting of thirteen 
papillae packed closely into a circle. Individual papillae 
as seen from the side are erect triangles with rounded 
angles; these are packed together to form a low truncate 
cone. Eyes five in number on each side, pigmentless, ar- 
ranged as follows: two close together, located just posterior 
to the P.A.O., the anterior of these somewhat larger than 
the posterior, and somewhat oval in shape; two others 
located considerably behind the forward pair and further 
apart; the fifth is positioned about midway between these 
pairs, and somewhat dorsad of both. Fourth antennal 
segment with numerous moderately long, slightly curved, 
slender setae. One single straight seta on apex on truncate 
papilla. Third segment with scattered similar setae, plus 
Explanation of Plate 12 
Figs. 1-13. Anurida hammeri, n. sp. 1. Habitus, dorsal view (setae 
omitted) . 2. Habitus, lateral view (setae omitted) . 3. Left hind claw 
(paratype). 4. Right fourth antennal segment, dorsal view (paratype). 
5. First lamella of maxilla (paratype) . 6. Second lamella of maxilla 
(paratype) . 7. Galea of maxilla (paratype) . 8. Basal process of maxilla 
(paratype) . 9. Third lamella of maxilla (paratype) . 10. Maxilla, showing 
all parts in natural position (paratype). 11. Mandible (paratype). 
12. Left half of last two abdominal segments, with setae (paratype) . 
13. Eyes and P.A.O. of right side (paratype) . 
