Mr. H. J. Carter on a neio Sjjecies o/'Aplysina. 101 



vol. vii. pi. 16. fig. 2, which, the femora excepted, will give a 

 good idea of the two species here described. 



EXPLANATION OF PLATE I. * 



Fig. 1. Sosytelus lohatus ; 1 a, side view of the head. 



Fig. 2. Agriochceta crinita ; 2 a, side view of the head. 



Fig. 3. Drassicus nigricornis ; 3 a, side view of the head. 



Fig. 4. Belus centralis. 



Fig. 5. Achcrres mamillahis ; 5 a, side view of the head. 



Fig. 6. Oditesus indutus ; 6 a, side view of the head. 



Fig. 7. Tragopus plagiatus. 



Fig. 8. JEdriodes fastigiatus) 8 a, side view of the head. 



Fig. 9. Nechyrus incompttis. 



Fig. 10. Side view of the head of Misophrice hispida ; 10 a, tarsus of the 



same. 

 Fig. 11. Side view of the head of Nechyrvs incomptus*. 

 Fig. 12. „ „ „ Oditesus huceros. 



Fig. 13. „ „ „ Amoiphorhimts australis, for comparison. 



Fig. 14. „ „ „ Acantholophus Marshayni, ditto. 



Fig. 15, „ ,, ,, Euomus iiisadptus, ditto. 



Fig. 16. Upper view of the head of Phrenuzemia Igproides. 

 Fig. ] 7. Side view of the head of Ageuopus agrieola. 

 Fig. 18. Fore leg of (Enochroma rubeta. 

 Fig. 19. Tarsus of 3Iyrmacicehis exsertus ; 19 a, tarsus of M. formicarius^ 



for comparison. 

 Fig. 20. Fore tarsus and part of tibia of Sosytelus lobatus. 

 Fig. 21. Fore tarsus and part of tibia of Agenopns ayj-icola (imfortunately 



reversed). 



XIII. — DescrijJtion^ loith Illustrations .^ of a new Species of 

 Aplysinay?'o?/i the N. W. Coast of Spain. By H. J. Carter, 

 F.R.S. &c. 



[Plate VII.] 



There is a little family of purely horny sponges (that is, 

 aspiculous, and without foreign objects in the core of the horny 

 fibre) in which there are as yet only two genera mentioned, 

 viz. Aplysina and Luffaria. For this family I propose, the 

 name of " Aplysinidai," after Aristotle's term for certain 

 sponges which he has described as follows : — 



"There is also another species, c,i\[\Q,(\. Aplysia [airXvala) ^ 

 because it cannot be washed. This has very large passages ; 

 but the other parts of the substance are quite compact. When 

 cut open it is more compact and smooth than the sponge, and 

 the whole is like a lung ; of all the sponges this one is con- 

 fessed to have the most sensation and to be the most enduring. 

 They are plainly seen in the sea near the sponges ; for the 



* The lateral groove below the insertion of the scape, in a line with 

 the scrobe, is made rather too much like the scrobe itself by the en- 

 graver. 



