68 UNITED STATES NATIONAL MUSEUM BULLETIN 29 6 



hairs on the inner curve and on the flat external surface, plus the 

 usual long medially curved apodeme. 



The segmentation of the mouth cirrus is debatable. Noll ascribed 

 to each ramus of the biramous mouth cirrus the possession of a single 

 segment. I have examined many of these, and confess that in most 

 cases the counting of segments is a very difficult task. I have felt 

 satisfied, however, that in some specimens I have counted five and 

 four segments in the anterior and posterior ramus, respectively (fig. 

 13g). The three-segmented protopod described by NoU is also doubt- 

 ful. The protopods of all species are often wrinkled, giving the appear- 

 ance of additional segmentation. I feel that it would be safer to 

 consider the long basal portion as being a single segment, with a 

 second segment near the rami shorter than the smaller posterior 

 ramus. 



The terminal cirri are not remarkable. Cirral segment counts of a 

 specimen from Papua (not the figured specimen) are as follows : 



Terminal 



cirrus: 12 3 



Ramus: anterior posterior anterior posterior anterior posterior 



Segments: 31 39 43 46 49 51 



This count is slightly high for acrothoracicans. The setation of the 

 terminal cirri is typical. A long pair of distal and shorter pair of 

 medial setae are found on the inner curvature of each segment, being 

 about twice as long, and as long as the segment, respectively. A single 

 seta of about tmce the segment length is found on the distal end of 

 each two to four or five segments. Occasionally these outer setae are 

 paired (about three times on the cirrus figured). 



The caudal appendage was described by Noll as being two-seg- 

 mented. With this I will not quarrel, inasmuch as it usually appears 

 to me to be two-segmented. The illustration, however, of the last 

 terminal cirrus (fig. 13h) shows what could almost be considered a 

 three-segmented caudal appendage. This ambiguity is seen also in 

 the genus Lithoglyptes, and should not be heavily considered in their 

 classification. 



The male: The mature male is approximately 0.1 X 0.25 mm in 

 body size, but it is on a stalk which, together with the antennules, 

 may be nearly 0.3 mm long. The body is distinctly "winged," with 

 two major and lesser pointed protuberances from the stalk. 



The typical antennules, naupliar eye, testis, seminal vesicle, and 

 penis is present. The penis extends into one of the "wings," which 

 presumably is elongated into a penis sheath. 



I consider Kochlorine inermis Stubbings, 1964, to be a very young 

 K. hamata. Only a single specimen was recovered by Stubbings, from 



