224 Zoological Society : — 



two inner front large, equal ; the outer small ; the inner hind toe 

 short, clawless ; the two index fingers small, united, clawed. 



Hab. Aru Island. 



Female. 



" The skin is very thin and friable. 



"Teeth 46 :— Inc. f ; C. j=f; Prem. g ; M. —."— Wallace. 



This enumeration agrees with that given by MM. Quoy and Gai- 

 mard, being two cutting teeth in the upper jaw less than are found in 

 the other species of the genus ; hence Lesson considered it as forming 

 a distinct genus. 



The outer and inner toes of the fore-feet are very small, rudi- 

 mentary and clawless. 



9. Paradoxurus hermaphrodita. 



Hab. K6 Islands. 



Is in the collection : it only appears to be a variety of the very vari- 

 able and extensively distributed Paradoxurus hermaphrodita. 



On Aphrocallistes, a New Genus of SpoNGiADiE from 

 Malacca. By Dr. John Edward Gray, F.R.S., V.P.Z.S. 



In 1842 we received from Captain Sir Edward Belcher a Sponge 

 which he obtained in Malacca, which evidently forms a new genus 

 nearly allied to the Euplectella of Professor Owen. I therefore have 

 great pleasure in bringing a description of it before the Society. 



Aphrocallistes. 



The sponge cylindrical, tubular, branched ; the end of the main 

 tube closed with an open network formed of spicula ; branches 

 cylindrical, simple, rarely bifid, rounded and closed at the end ; the 

 inner surface of the tube with large unequal-sized concavities placed 

 in longitudinal series, having a large roundish oscule near its lower 

 edge. 



The sponge hard, calcareous, with uniform, close, equal, regular 

 hexangular pores on the surface, and larger round ostioles in series 

 on the sides of the main tube. The outer surface formed of inter- 

 tangled transparent spines, which inosculate and unite with each 

 other at their intersections, forming a hard, rather brittle crust. The 

 inner surface lined with a coat of fusiform transparent spicula, which 

 are placed in bundles parallel to each other in the spaces between 

 the roundish internal apertures of the crowded small superficial 

 pores. 



This genus is very like Euplectella of Professor Owen in its ex- 

 ternal form, and especially in the upper part of the tube being closed 

 with network. 



It differs from that genus in being more irregularly formed and 

 branched, and in the structure and calcareous composition of the 

 sponge itself. 



In that genus the basis of the tube is formed of ropes of elongated 

 spicula placed at right angles longitudinally and transversely to the 



