736 BULLETIN 82, UNITED STATES NATIONAL MUSEUM. 



IV. Arms with more or less regular and uniform spots : 

 (a) Spots confined to the division series and arm bases : 



Tropiometra picta. Gephyrovietra versicolor. 



(h) Numerous small spots generally distributed: 



Capillaster multiradiata. Zygometrn tnicrodiscus, young. 



Capillaster clarki. Heterometra crenulata. 



Comantheria hriareus. Pterometra pulcherrivia. 



Antedon viediterranea. 

 v. Arms with a median dorsal stripe : 



(a) A broad median stripe, lighter or darker than the color on either side of it : 

 G omantheria briareus. Oephyrometra propingua. 



Tropiometra picta. Indometra melpovierie. 



Balanometra elongata. 

 {h) A narrow median stripe, always very dark: 

 Coviaster miruma. Oligometi'ides adeonm. 



Mariametra delicatissima. 

 VI. Arms conspicuously and regularly cross banded: 

 (a) With several more or less irregular broad bands : 



Zygometra microdiscus., young. Calometra separata. Dorometra hriseis. 

 (6) With a broad approximately central band: 



Comatella stelligera. Lamprometra protectus. 



Capillaster multiradiata. Neometra multicolor. 



Stephanoj)ietra spicata. Calometra callista. 



Antedon petasus. 



(c) With broad alternating bands of equal width : 



Capillaster Jiiultiradiata. Catoptometra mxignifica. 



Comantheria hinareus. fCatoptnmetra opkiura. 



Heterometra savignii. C atoptom,etra rubroflava. 



(d) With narrow alternating bands of equal width: 

 Heterometra crenulata. Neometra multicolor. 

 Heterometra affinis. Pectinometra flavopurpurea. 

 HomMometra denticulata. Daid-alometra hana. 

 Lamproinetra protectus. Parametra orion. 

 fLamprometra palm,ata. Lissometra alboflava. 

 Cyllometra albopurpurea. Antedon petasus. 

 Neometra conaminis. Antedon adriatica. 



Cyclometra clio. 



(e) With narrow well-spaced bands: 



Prometra chadwicM. Hathrometra sarsii. Tropiometra picta. 



