COOKE : IN MEMORIAM : M. H. CROSSE. 



EXPLANATION OF PLATE L 



Fig. I. — Cryptosomn austeni, n. sp. Shell. x i. 



Fig. 2. — „ „ View of the animal from the right side, 



after the removal of the shell, x 3. 



Fig. 3. — „ „ Portion of foot-sole, showing median 



and lateral planes and extremity of 

 foot-sole, X 3*5. 



Fig. 4. — ,, ,, Terminal ducts of the generative or- 



gans. 



Fig. z^.~Cryptosoma pnestans, Gould. Terminal ducts of the genera- 

 tive organs (after Godwin-Austen). 



Reference Letters. 



d. s. Dart-sac. /. Penis. 



f. ov. Free-oviduct. pr. Prostate. 



k. s. Kale-sac. r. s. Receptaculum seminis. 



/. d. I. Left dorsal lolie of the mantle. r. d. I. Right dorsal lobe of the mantle. 



/. p. Lateral plane of the foot-sole. 7: m. Retractor muscle of the penis. 



/. s. I. Left shell-lobe. ;■. s. I. Right shell-lobe. 



m. p. Median plane of the foot-sole. v. d. Vas deferens. 



ov. Oviduct. vg. \'agina. 



IN MEMORIAM: M. H. CROSSE. 



By the Rev. A. H. COOKE, M.A., F.Z.S., 

 Felloiv and Tutor of King's College, Cambridge. 



The scientific world in general, and malacologists in particular, will 

 have learned with profound regret the news of the death of ^L Joseph 

 Charles Hippolyte Crosse, which took place on August 7, 1898, at 

 his country residence, the Chateau d' Argeville, at Vernou, near 

 Paris. No man of his time has done more, few have done as much, 

 to promote the study of the Mollusca, and in him France has lost 

 one of her most distinguished men of science. It was one of those 

 strange coincidences that sometimes occur to us all, that I should 

 have been walking down the Rue Tronchet in Paris, and wondering 

 whether I should call at No. 25, only the day before I returned home 

 to hear of his death, and receive the request to write this obituary 

 notice. 



