no. 3606 ODONTODACTYLUS — MANNING 25 



Dactylus of raptorial claw with 6-10 teeth. 



Second to fifth abdominal somites each with anterolateral pit 

 from which a shallow groove extends posteriorly; grooves increasing 

 in depth posteriorly, on fourth somite flanked by low carina, flanking 

 carina of fifth somite more prominent; sixth somite with 6 pairs of 

 sharp posterior spines, submedians each with posteriorly reflected 

 portion lying between submedian and intermediate carinae; sixth 

 somite with large anterior tubercle between intermediate and lateral 

 carinae; third to fifth abdominal somites with posterolateral spines; 

 sixth somite without ventrolateral spines in front of articulation of 

 uropod. 



Telson broader than long, with 1 pair of accessory median carinae; 

 submedians long, occasionally suppressed at base of submedian tooth; 

 intermediate denticles with short dorsal carina; carina of intermediate 

 tooth not extending anteriorly much past base of tooth; lateral 

 carinae subparallel or convergent with marginal, if subparallel apex 

 occasionally turning toward and fusing with apex of marginal carina 

 on lateral tooth; anterior surface of telson with distinct tubercle 

 lateral to submedian carina. 



Outer margin of proximal segment of uropod exopod with 8-11 

 movable spines, not markedly spatulate or upturned, last not extend- 

 ing to end of distal segment; distal segment of uropod about four- 

 fifths as long as proximal, relative lengths of the segments varying; 

 outer spine of basal prolongation the longer. 



Color. — Faded in most specimens except for a dark spot on the 

 proximal segment of the uropodal exopod. One specimen had short, 

 interrupted lines on the dorsum of the body and dark posterolateral 

 patches on the carapace in addition to the spots on the uropods. 



Size.— Males, TL 13.0-56.9 mm; females, 13.7-79.4 mm. 



Measurements and indices for selected specimens of 0. brevirostris 

 (Miers) are as follows: 



Females 



