516 DESCKIPTION OF A NEW HYDROMEDUSAN. [Juue 18, 



not luminous. The green lights were placed near the hind 

 margins of the segments — those on the penultimate segment close 

 to the median dorsal line, the others at the sides. Luminous, 

 larva-like insects similar to this one were known in America since 

 the beginning of the nineteenth century, but were met with only 

 at rare intervals, and for a long time were supposed to be the 

 larvfe of ryrophorVjS or some other genus of Elateridpe. ISTot 

 until 22 years ago were they first definitely ascertained to belong 

 to the Phengodini, a group of Malacoderm beetles allied to the 

 glowworms. The males of this group are ordinary winged beetles, 

 with well-developed plumose antennee, and rather short, narrow, 

 wing-cases ; they are slightly luminous from one or more of the 

 sternites of the abdomen. The females, apart from their greater 

 luminosity, are of especial interest, inasmuch as they are more 

 larva-like than any other known beetles ; they retain not only 

 the general form but all the external features of the larva, 

 including short, four-jointed antennae px-ovided with a sensory 

 organ like that of the larva, simple eyes, and five-jointed legs 

 ending each in a single claw ; they apparently difier from the larva 

 only in having somewhat shorter jaws and shorter tarsal claws. 

 It was impossible, therefore, to say whether the specimen ex- 

 hibited was an adult female or only a well-grown larva. It agreed 

 veiy well on the whole with the figure and description of the ■ _ ^^j, 

 female of Phengodes hieronymi Haase *, but was not-se-la-rge, was « 

 less hairy, and had one pair more of green lights — the pair situated ^ 

 near the middle line on the penultimate segment. ° 



Mr. H. 0. Bax-Ironside, H.M. Minister to Venezuela, exhibited 

 a series of 1 8 models of Venezuelan Animals. The models had been <*r 

 made from living specimens by a native Indian, the material '^ 

 employed being Ballata gum. i' 



Mr. 0. L. Boulenger exhibited and made remarks on a new >= 

 Hydromedusan of which examples of both polyp and medusa f* 

 stages were obtained by Dr. Cunnington and himself during their ^ 

 recent exploration of the lake Birket Qurun in the Fayum. 



The medusa, for which Mr. Boulenger proposed the name 

 Moerisia lyonsi, g. & sp. n., was an Anthomedusan which 

 appeared closely related to Sarsia. 



The hydroid was gymnoblastic and resembled Cordylophora, 

 diflfering, however, from that genus in possessing a more complex 

 mode of branching, and in the situation of the gonophores, which 

 were on the polyps themselves. 



7^ 



Mr. R. I. Pocock, the Superintendent of the Gardens, exhibited 

 two young English Squirrels (Scmrus vulgaris albicauda) showing 



* Deutsche Ent. Zeit. xxxii. 



