32 OttBIOPLEURA. , 



plates triaiiLMilatc : sinus deep; margins of the valves simple, the 

 median having 1, the terminal valves about 7 slits. ()>?') 

 ill, :;. alt. , mill; divergence 110. 



if/an, on Spondylus calcil'er. 



Lepidopleurus bntlaliis Cri:., Ma/at. Catal. p. 195. Chtttojil* 

 l n ll ' !/>'. L. hnll'itu* i'"r. (<>/< Iferus CPR., 1. c. p. 196. 



One fresh specimen (><>me\vliat crushed in extraction) and a few 

 perfe i were found of this species, which is characterized by 



the very >t mil-: row <>f tubercles, (like pebbles) which lie on the 

 diagonal line; by the rows of somewhat strong tubercles on the 

 central area, rmminir perpendicularly from the diagonal towards the 

 juguni and the granules over the whole surface, somewhat corru- 

 gated on the juguni. The internal plates of all the valves have an 

 :ial projection from the outer surface, as in L. .ni<juJuem. 



Carpenter describes a larger specimen in ms. as follows : Mucro 

 median, -eaively elevated. Vermilion and olive, very irregularly, 

 vividly maculated. Interior: posterior valve with 9, central valves 

 1, anterior valve 11 slits. Teeth acute. Eaves projecting, pectin- 

 ated by the sculpture. Sinus moderate, high, laminate. Girdle 

 smooth, ornamented with sparse hairlets. Gills subambient, scarcely 

 reaehiiiLT the head. Abedhas Reefs. (Mus. Yale College). This 

 specimen is about 15 mill, long, 6i broad, divergence 125. It 

 agrees in most respects with the very young shell described in Maz. 

 ( 'atal., but is much longer in proportion. 



Yai. C \i.< ii I.HA Cpr. 



Lateral areas tuberculate, without pustules ; diagonal line peb- 

 bled ; central areas with lines of tubercles irregular, tubercles smal- 

 ler. Hairs of the girdle larger, very close. 



( '. r.i AMI < arpenter. 



Shell ovate, elevated, brown-olive or maculated with whitish and 

 hlui.-h. Intermediate valves strongly mucronate, interstices curved, 

 margins >omewhat rounded. Posterior valve depressed, excavated, 

 the mucro >mall. superior; jugal and lateral areas indistinct : sur- 

 with granules and ornamented with small close points. 

 Sutural plates large, curved; sinus tlat : insertion plates acute, the 

 intermediate valves with 1, terminal valves l!) slits. Girdle hairy, 

 -pines .-mall, erect, tlat. 



adth 3i,alt. 1 mill.; divergence 110. 



it Ian, 



