20 



each of the last with a dimorphic phase. Of these the South 

 Cameroon race of Gorilla gorilla and the Gaboon White- faced 

 Chimpanzee were described as new. In ilkistration of the paper 

 Mr. Rothschild exhibited seven stuffed Gorillas, eight stuffed 

 Chimpanzees, twenty-six skulls of Gorillas, two skidls of Chim- 

 panzees, two entire skeletons of Gorillas, some casts of a Gorilla 

 and Gorilla skulls, a number of photographs and drawings of 

 Chimpanzees, and two, drawings of Orang-Utans. The bulk of 

 the mounted specimens, all but three Gorillas and two Chimpanzees, 

 were mounted under Mr. Rothschild's personal supervision, from 

 photoglyphs and sketches from life, by Rowland Ward ; the five 

 exceptions were set up by Gerrard. 



Dr. W. G. RiDEWOOD, F.Z.S., read a paper on the Cranial 

 Osteology of the Clupeoid Fishes, a sequel to two papers dealing 

 with the skull in the Elopoid and Mormyroid Fishes which had 

 already been published. The skulls of Chanos, Chirocentrus, 

 Chaioesstts, Clupea, and seven other genera were described in 

 gi'eater or less detail, and in a Summary the relative values of 

 such " Clupeoid " characters as the temporal foramen, auditory 

 fenestra, pre-epiotic fossa, pro-otic and squamosal bullae, and 

 posterior wings of the parasphenoid bone were discussed. 

 Di-. Ridewood arrived at the conclusion that C'hanos had no close 

 affinity with the Clupeidse ; and he pointed out that the skull of 

 Chirocentrus so closely resembled that of the Clupeidas that it was 

 only the strongly marked differences to be found in other parts of 

 the body which justified the retention of the Chirocentridse as a 

 family distinct from the Clupeidse. 



Professor E. A. Minchin, F.Z.S.,read a paper on the characters 

 and synonymy of the British species of Sponges of the genus 

 Leucosolenia, based on examination of the type specimens in the 

 British Museum and elsewhere. Three species were recognised, 

 namely : — L. hotryoides (Ell. & Sol.), synonyms Ascandra hotrys 

 Hseckel and A. nitida H. ; L. comjMcata (Mont.), synonyms 

 Ascandra pinus H., Ascortis fahricii H., Asculmis armata H., 

 and possibly Ascyssa acufera H. ; and L. variabilis H., synonyms 

 Ascortis coralloi-rhizaH., Ascandra temois Schuffner, and Leuconia 

 somesii Bowerbank. The paper aimed at giving an exhaustive 

 account of the characters and variations of the three species. 



Dr. W. T. Blanford, C.I.E., F.R.S., read a paper containing 

 descriptions of 18 species of Land-MoUusca belonging to the genus 

 Macrochlamys and its allies. All were from the British Indian 

 Empire, and about half were collected by the describer ; some 

 were from Colonel Beddome's or other collections. Of the species 

 described, twelve were referred to Macrochlamys, one to Taphro- 

 spira (nov. gen., type Helix convallata Benson), one to Bensonia, 

 one to Polita, two to Microcystina, and one to Euplecta. 



